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MariaDB MaxScale 21.06 REST API

Manage MaxScale programmatically using the REST API. This interface allows for the dynamic administration and monitoring of resources like servers, services, listeners, and filters.

MaxScale 21.06 Admin User Resource

Admin users represent administrative users that are able to query and change MaxScale's configuration.

Admin User Resource
- Resource Operations

Resource Operations

Get network user

Get a single network user. The :name in the URI must be a valid network user name.

Response

Status: 200 OK

Get all network users

Get all network users.

Response

Status: 200 OK

Get enabled UNIX account

Note: This endpoint has been deprecated and does nothing.

Get all enabled UNIX accounts

Note: This endpoint has been deprecated and does nothing.

Get all users

Get all administrative users.

Response

Status: 200 OK

Create a network user

Create a new network user. The request body must define at least the following fields.

data.id
The username
data.type

Only admin accounts can perform POST, PUT, DELETE and PATCH requests. If a basic account performs one of the aforementioned request, the REST API will respond with a 401 Unauthorized error.

Here is an example request body defining the network user my-user with the password my-password that is allowed to execute only read-only operations.

Response

Enable a UNIX account

This enables an existing UNIX account on the system for administrative operations. The request body must define at least the following fields.

data.id
The username
data.type

Here is an example request body enabling the UNIX account jdoe for read-only operations.

Response

Delete a network user

The :name part of the URI must be a valid user name.

Response

Disable a UNIX account

The :name part of the URI must be a valid user name.

Response

Update a network user

Update network user. Currently, only the password can be updated. This means that the request body must define the data.attributes.password field.

Here is an example request body that updates the password.

Response

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MaxScale 21.06 Filter Resource

A filter resource represents an instance of a filter inside MaxScale. Multiple services can use the same filter and a single service can use multiple filters.

MaxScale 21.06 Listener Resource

A listener resource represents a listener of a service in MaxScale. All listeners point to a service in MaxScale.

Listener Resource
- Resource Operations

Resource Operations

Get a listener

Get a single listener. The :name in the URI must be the name of a listener in MaxScale.

Response

Status: 200 OK

Get all listeners

Get all listeners.

Response

Status: 200 OK

Create a new listener

Creates a new listener. The request body must define the following fields.

data.id
Name of the listener
data.type

The following is the minimal required JSON object for defining a new listener.

Refer to the for a full list of listener parameters.

Response

Listener is created:

Status: 204 No Content

Update a listener

The request body must be a JSON object which represents a set of new definitions for the listener.

All parameters marked as modifiable at runtime can be modified. Currently, all TLS/SSL parameters and the connection_init_sql_file and sql_mode parameters can be modified at runtime.

Parameters that affect the network address or the port the listener listens on cannot be modified at runtime. To modify these parameters, recreate the listener.

Response

Listener is modified:

Status: 204 No Content

Destroy a listener

The :name must be a valid listener name. When a listener is destroyed, the network port it listens on is available for reuse.

Response

Listener is destroyed:

Status: 204 No Content

Listener cannot be deleted:

Status: 403 Forbidden

Stop a listener

Stops a started listener. When a listener is stopped, new connections are no longer accepted and are queued until the listener is started again.

Parameters

This endpoint supports the following parameters:

force=yes
Close all existing connections that were created through this listener.

Response

Listener is stopped:

Status: 204 No Content

Start a listener

Starts a stopped listener.

Response

Listener is started:

Status: 204 No Content

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MaxScale 21.06 Monitor Resource

A monitor resource represents a monitor inside MaxScale that monitors one or more servers.

Monitor Resource
- Resource Operations

Resource Operations

The :name in all of the URIs must be the name of a monitor in MaxScale.

Get a monitor

Get a single monitor.

Response

Status: 200 OK

Get all monitors

Get all monitors.

Response

Status: 200 OK

Create a monitor

Create a new monitor. The request body must define at least the following fields.

data.id
Name of the monitor
data.type

All monitor parameters can be defined at creation time.

The following example defines a request body which creates a new monitor and assigns two servers to be monitored by it. It also defines a custom value for the monitor_interval parameter.

Response

Monitor is created:

Status: 204 No Content

Update a monitor

The request body must be a valid JSON document representing the modified monitor.

Modifiable Fields

The following standard server parameter can be modified.

In addition to these standard parameters, the monitor specific parameters can also be modified. Refer to the monitor module documentation for details on these parameters.

Response

Monitor is modified:

Status: 204 No Content

Invalid request body:

Status: 403 Forbidden

Update monitor relationships

The request body must be a JSON object that defines only the data field. The value of the data field must be an array of relationship objects that define the id and type fields of the relationship. This object will replace the existing relationships of the monitor.

The following is an example request and request body that defines a single server relationship for a monitor.

All relationships for a monitor can be deleted by sending an empty array as the_data_ field value. The following example removes all servers from a monitor.

Response

Monitor relationships modified:

Status: 204 No Content

Invalid JSON body:

Status: 403 Forbidden

Destroy a monitor

Destroy a created monitor. The monitor must not have relationships to any servers in order to be destroyed.

This endpoint also supports the force=yes parameter that will unconditionally delete the monitor by first unlinking it from all servers that it uses.

Response

Monitor is deleted:

Status: 204 No Content

Monitor could not be deleted:

Status: 403 Forbidden

Stop a monitor

Stops a started monitor.

Response

Monitor is stopped:

Status: 204 No Content

Start a monitor

Starts a stopped monitor.

Response

Monitor is started:

Status: 204 No Content

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MaxScale 21.06 Session Resource

A session is an abstraction of a client connection, any number of related backend connections, a router module session and possibly filter module sessions. Each session is created on a service and each service can have multiple sessions.

Session Resource
- Resource Operations

Resource Operations

Get a session

Get a single session. :id must be a valid session ID. The session ID is the same that is exposed to the client as the connection ID.

This endpoint also supports the rdns=true parameter, which instructs MaxScale to perform reverse DNS on the client IP address. As this requires communicating with an external server, the operation may be expensive.

Response

Status: 200 OK

Get all sessions

Get all sessions.

Response

Status: 200 OK

Update a Session

The request body must be a JSON object which represents the new configuration of the session. The :id must be a valid session ID that is active.

The log_debug, log_info, log_notice, log_warning and log_error boolean parameters control whether the associated logging level is enabled:

The filters that a session uses can be updated by re-defining the filter relationship of the session. This causes new filter sessions to be opened immediately. The old filter session are closed and replaced with the new filter session the next time the session is idle. The order in which the filters are defined in the request body is the order in which the filters are installed, similar to how the filter relationship for services behaves.

Response

Session is modified:

Status: 204 No Content

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MaxScale 21.06 SQL Resource

The SQL resource represents a database connection.

SQL Resource
- SQL Connection Interface

SQL Connection Interface

The following endpoints provide a simple REST API interface for executing SQL queries on servers and services in MaxScale.

This document uses the :id value in the URL to represent a connection ID and the :query_id to represent a query ID. These values do not need to be manually added as the relevant links are returned in the request body of each endpoint.

The endpoints use JSON Web Tokens to uniquely identify open SQL connections. A connection token can be acquired with a POST /v1/sql request and can be used with the POST /v1/sql/:id/query, GET /v1/sql/:id/results/:query_id andDELETE /v1/sql endpoints. All of these endpoints accept a connection token in the token parameter of the request:

In addition to request parameters, the token can be stored in cookies in which case they are automatically used by the REST API. For more information about token storage in cookies, see the documentation for POST /v1/sql.

Request Parameters

All of the endpoints that operate on a single connection support the following request parameters. The GET /v1/sql and GET /v1/sql/:id endpoints are an exception as they ignore the current connection token.

token
The connection token to use for the request. If provided, the value is unconditionally used even if a cookie with a valid token exists.

Get one SQL connection

Response

Response contains the requested resource.

Status: 200 OK

Get all SQL connections

Response

Response contains a resource collection with all the open SQL connections.

Status: 200 OK

Open SQL connection to server

The request body must be a JSON object consisting of the following fields:

target
The object in MaxScale to connect to. This is a mandatory value and the given value must be the name of a valid server, service or listener in MaxScale.
user

Here is an example request body:

The response will contain the new connection with the token stored atmeta.token. If the request uses the persist=yes request parameter, the token is stored in cookies instead of the metadata object and the response body will not contain the token.

The location of the newly created connection will be stored at links.self in the response body as well as in the Location header.

The token must be given to all subsequent requests that use the connection. It must be either given in the token parameter of a request or it must be stored in the cookies. If both a token parameter and a cookie exist at the same time, the token parameter will be used instead of the cookie.

Request Parameters

This endpoint supports the following request parameters.

persist
Store the connection token in cookies instead of returning it as the response body. This parameter expects only one value, yes, as its argument. Whenpersist=yes is set, the token is stored in two cookies,conn_id_body_<id> and conn_id_sig_<id> where the <id>

Response

Connection was opened:

Status: 201 Created

Missing or invalid payload:

Status: 403 Forbidden

Close an opened SQL connection

Response

Connection was closed:

Status: 204 No Content

Missing or invalid connection token:

Status: 403 Forbidden

Reconnect an opened SQL connection

Reconnects an existing connection. This can also be used if the connection to the backend server was lost due to a network error.

The connection will use the same credentials that were passed to the POST /v1/sql endpoint. The new connection will still have the same ID in the REST API but will be treated as a new connection by the database. A reconnection re-initializes the connection and resets the session state. Reconnections cannot take place while a transaction is open.

Response

Reconnection was successful:

Status: 204 No Content

Reconnection failed or connection is already in use:

Status: 503 Service Unavailable

Missing or invalid connection token:

Status: 403 Forbidden

Execute SQL query

The request body must be a JSON object with the value of the sql field set to the SQL to be executed:

The request body must be a JSON object consisting of the following fields:

sql
The SQL to be executed. If the SQL contain multiple statements, multiple results are returned in the response body.
max_rows

By default, the complete result is returned in the response body. If the SQL query returns more than one result, the results array will contain all the results.

The results array can have three types of objects: resultsets, errors, and OK responses.

A resultset consists of the data field with the result data stored as a two dimensional array. The names of the fields are stored in an array in thefields field. These types of results will be returned for any operation that returns rows (i.e. SELECT statements)

An error consists of an object with the errno field set to the MariaDB error code, the message field set to the human-readable error message and thesqlstate field set to the current SQLSTATE of the connection.

An OK response is returned for any result that completes successfully but not return rows (e.g. an INSERT or UPDATE statement). The affected_rows field contains the number of rows affected by the operation, thelast_insert_id contains the auto-generated ID and the warnings field contains the number of warnings raised by the operation.

It is also possible for the fields of the error response to be present in the resultset response if the result ended with an error but still generated some data. Usually this happens when query execution is interrupted but a partial result was generated by the server.

Response

Query successfully executed:

Status: 201 Created

Invalid payload or missing connection token:

Status: 403 Forbidden

Fatal connection error:

Status: 503 Service Unavailable

If the API returns this response, the connection to the database server was lost. The only valid action to take at this point is to close it with theDELETE /v1/sql/:id endpoint.

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MaxScale 21.06 REST API

This document describes the version 1 of the MaxScale REST API.

REST API

Note About Syntax

Although JSON does not define a syntax for comments, some of the JSON examples have C-style inline comments in them. These comments use // to mark the start of the comment and extend to the end of the current line.

Configuration

Read the section of the configuration guide for more details on how to configure the REST API.

Authentication

The MaxScale REST API uses authentication with the MaxScale administrative interface users. The default user is admin:mariadb.

It is highly recommended to enable HTTPS on the MaxScale REST API to make the communication between the client and MaxScale secure. Without it, the passwords can be intercepted from the network traffic. Refer to the for more details on how to enable HTTPS for the MaxScale REST API.

For more details on how administrative interface users are created and managed, refer to the documentation as well as the documentation of the resource.

JSON Web Tokens

MaxScale supports authentication via .

The /v1/auth endpoint can be used to generate new tokens which are returned in the following form.

Note that by default the /auth endpoint requires the connection to be encrypted (HTTPS) and attempts to use it without encryption will be treated as an error. To allow use of the /auth endpoint without encryption, useadmin_secure_gui=false.

If the token is used to authenticate users in a web browser, the token can be optionally stored in cookies. This can be enabled with the persist=yes parameter in the request:

When the token is stored in the cookies, it will be split into two parts: the JWT body will be stored in a cookie named token_body and the JWT signature is stored in token_sig. The JWT signature will be stored with SameSite=Strict and HttpOnly cookie options which means the JavaScript context of the browser will not have access to it. This is done to prevent CSRF attacks.

By default, the generated tokens are valid for 8 hours. The token validity period can be set with the max-age request parameter:

When max-age is combined with persist, the Max-Age cookie option is also set to the same value.

To use the token for authentication, the generated token must be presented in the Authorization header with the Bearer authentication scheme. For example, the token above would be used in the following manner:

If MaxScale is restarted, all generated tokens are invalidated.

/auth Request Parameters

The /auth endpoint supports the following request parameters that must be given in the HTTP query string.

max-age
Sets the token maximum age in seconds. The default is max-age=28800. Only positive values are accepted and if a non-positive or a non-integer value is found, the parameter is ignored.
persist

Resources

The MaxScale REST API provides the following resources. All resources conform to the specification.

In addition to the named resources, the REST API will respond with a HTTP 200 OK response to GET requests on the root resource (/) as well as the namespace root resource (/v1/). These can be used for HTTP health checks to determine whether MaxScale is running.

API Versioning

All of the current resources are in the /v1/ namespace of the MaxScale REST API. Further additions to the namespace can be added that do not break backwards compatibility of any existing resources. What this means in practice is that:

No resources or URLs will be removed
The API will be JSON API compliant

Note that this means that the contents of individual resources can change. New fields can be added, old ones can be removed and the meaning of existing fields can change. The aim is to be as backwards compatible as reasonably possible without sacrificing the clarity and functionality of the API.

Since MaxScale 2.4.0, the use of the version prefix /v1/ is optional: if the prefix is not used, the latest API version is used.

Resource Relationships

All resources return complete JSON objects. The returned objects can have a_relationships_ field that represents any relations the object has to other objects. This closely resembles the JSON API definition of links.

In the relationships objects, all resources have a self link that points to the resource itself. This allows easy access to the objects pointed by the relationships as the reply URL is included in the response itself.

To create a relationship between two objects, define it in the initial POST request. To modify the relationships of existing objects, perform a PATCH request with the new definition of the relevant relationship. To completely remove all relationships from an object, the data field of the corresponding relationship object must be set to an empty array.

The following lists the resources and the types of links each resource can have in addition to the self link. Examples of these relationships can be seen in the resource documentation.

services - Service resource
servers List of servers used by the service
services List of services used by the service

Common Request Parameters

All the resources that return JSON content also support the following parameters. Parameters are given in the HTTP query string:https://localhost:8989/v1/servers?pretty=true&fields[servers]=state.

pretty
Pretty-print output. If this parameter is set to true then the returned objects are formatted in a more human readable format. If the parameter is set to false then the returned objects are formatted in a compact format. All resources support this parameter. The default value for this parameter is true.

HTTP Headers

Request Headers

REST makes use of the HTTP protocols in its aim to provide a natural way to understand the workings of an API. The following request headers are understood by this API.

Authorization

Credentials for authentication. This header should consist of a HTTP Basic Access authentication type payload which is the base64 encoded value of the username and password joined by a colon e.g. Base64("maxuser:maxpwd").

Content-Type

All PUT and POST requests must use the Content-Type: application/json media type and the request body must be a complete and valid JSON representation of a resource. All PATCH requests must use the Content-Type: application/json media type and the request body must be a JSON document containing a partial definition of the modified resource.

Host

The address and port of the server.

If-Match

The request is performed only if the provided ETag value matches the one on the server. This field should be used with PATCH requests to prevent concurrent updates to the same resource.

The value of this header must be a value from the ETag header retrieved from the same resource at an earlier point in time.

If-Modified-Since

If the content has not changed the server responds with a 304 status code. If the content has changed the server responds with a 200 status code and the requested resource.

The value of this header must be a date value in the format.

If-None-Match

If the content has not changed the server responds with a 304 status code. If the content has changed the server responds with a 200 status code and the requested resource.

The value of this header must be a value from the ETag header retrieved from the same resource at an earlier point in time.

If-Unmodified-Since

The request is performed only if the requested resource has not been modified since the provided date.

The value of this header must be a date value in the format.

X-HTTP-Method-Override

Some clients only support GET and PUT requests. By providing the string value of the intended method in the X-HTTP-Method-Override header, a client can, for example, perform a POST, PATCH or DELETE request with the PUT method (e.g. X-HTTP-Method-Override: PATCH).

If this header is defined in the request, the current method of the request is replaced with the one in the header. The HTTP method must be in uppercase and it must be one of the methods that the requested resource supports.

Response Headers

Allow

All resources return the Allow header with the supported HTTP methods. For example the resource /services will always return the Accept: GET, PATCH, PUT header.

Accept-Patch

All PATCH capable resources return the Accept-Patch: application/json-patch header.

Date

Returns the RFC 1123 standard form date when the reply was sent. The date is in English and it uses the server's local timezone.

ETag

An identifier for a specific version of a resource. The value of this header changes whenever a resource is modified via the REST API. It will not change if an internal MaxScale event (e.g. server changing state or statistics being updated) causes a change.

When the client sends the If-Match or If-None-Match header, the provided value should be the value of the ETag header of an earlier GET.

Last-Modified

The date when the resource was last modified in "HTTP-date" format.

Location

If an out of date resource location is requested, a HTTP return code of 3XX with the Location header is returned. The value of the header contains the new location of the requested resource as a relative URI.

WWW-Authenticate

The requested authentication method. For example, WWW-Authenticate: Basic would require basic HTTP authentication.

Mxs-Warning

This header is used for sending generic warnings to clients about actions that were successful and valid but could cause problems in the future. Currently these are used to indicate when a configuration change was made to a static object and an overriding configuraiton is created or when a static object is being deleted at runtime.

The content of the header is the human-readable warning that should be displayed to a user.

Response Codes

Every HTTP response starts with a line with a return code which indicates the outcome of the request. The API uses some of the standard HTTP values:

2xx Success

200 OK
Successful HTTP requests, response has a body.
201 Created
A new resource was created.

3xx Redirection

This class of status code indicates the client must take additional action to complete the request.

301 Moved Permanently
This and all future requests should be directed to the given URI.
302 Found

4xx Client Error

The 4xx class of status code is when the client seems to have erred. Except when responding to a HEAD request, the body of the response MAY contains a JSON representation of the error.

The error field contains a short error description and the description field contains a more detailed version of the error message.

400 Bad Request
The server cannot or will not process the request due to client error.
401 Unauthorized

5xx Server Error

The server failed to fulfill an apparently valid request.

500 Internal Server Error
A generic error message, given when an unexpected condition was encountered and no more specific message is suitable.
501 Not Implemented

Response Headers Reserved for Future Use

The following response headers are not currently in use. Future versions of the API could return them.

206 Partial Content
The server is delivering only part of the resource (byte serving) due to a range header sent by the client.
300 Multiple Choices

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MaxScale 21.06 Service Resource

A service resource represents a service inside MaxScale. A service is a collection of network listeners, filters, a router and a set of backend servers.

Service Resource
- Resource Operations

Resource Operations

The :name in all of the URIs must be the name of a service in MaxScale.

Get a service

Get a single service.

Response

Status: 200 OK

Get all services

Get all services.

Response

Status: 200 OK

Create a service

Create a new service by defining the resource. The posted object must define at least the following fields.

data.id
Name of the service
data.type

The data.attributes.parameters object is used to define router and service parameters. All configuration parameters that can be defined in the configuration file can also be added to the parameters object. The exceptions to this are the type, router, servers and filters parameters which must not be defined.

As with other REST API resources, the data.relationships field defines the relationships of the service to other resources. Services can have two types of relationships: servers and filters relationships.

If the request body defines a valid relationships object, the service is linked to those resources. For servers, this is equivalent to adding the list of server names into the parameter. For filters, this is equivalent to adding the filters in thedata.relationships.filters.data array to the parameter in the order they appear. For other services, this is equivalent to adding the list of server names into the parameter.

The following example defines a new service with both a server and a filter relationship.

Response

Service is created:

Status: 204 No Content

Destroy a service

A service can only be destroyed if the service uses no servers or filters and all the listeners pointing to the service have been destroyed. This means that the data.relationships must be an empty object and data.attributes.listeners must be an empty array in order for the service to qualify for destruction.

If there are open client connections that use the service when it is destroyed, they are allowed to gracefully close before the service is destroyed. This means that the destruction of a service can be acknowledged via the REST API before the destruction process has fully completed.

To find out whether a service is still in use after it has been destroyed, the resource should be used. If a session for the service is still open, it has not yet been destroyed.

This endpoint also supports the force=yes parameter that will unconditionally delete the service by first unlinking it from all servers and filters that it uses.

Response

Service is destroyed:

Status: 204 No Content

Update a service

The request body must be a JSON object which represents a set of new definitions for the service.

All standard service parameters can be modified. Refer to the documentation on the details of these parameters.

In addition to the standard service parameters, router parameters can be updated at runtime if the router module supports it. Refer to the individual router documentation for more details on whether the router supports it and which parameters can be updated at runtime.

The following example modifies a service by changing the user parameter to admin.

Response

Service is modified:

Status: 204 No Content

Update service relationships

The :type in the URI must be either servers, services or filters, depending on which relationship is being modified.

Note: The order of the values in the filters relationship will define the order the filters are set up in. The order in which the filters appear in the array will be the order in which the filters are applied to each query. Refer to the parameter for more details.

The following is an example request and request body that defines a single server relationship for a service that is equivalent to a servers=my-server parameter.

All relationships for a service can be deleted by sending an empty array as the_data_ field value. The following example removes all servers from a service.

Response

Service relationships modified:

Status: 204 No Content

Invalid JSON body:

Status: 403 Forbidden

Stop a service

Stops a started service.

Parameters

This endpoint supports the following parameters:

force=yes
Close all existing connections that were created through this listener.

Response

Service is stopped:

Status: 204 No Content

Start a service

Starts a stopped service.

Response

Service is started:

Status: 204 No Content

Reload users of a service

Reloads the list of database users used for authentication.

Response

Users are reloaded:

Status: 204 No Content

Get service listeners

This endpoint is deprecated, use the listeners endpoint instead.

Get a single service listener

This endpoint is deprecated, use the listeners endpoint instead.

Create a new listener

This endpoint is deprecated, use the listeners endpoint instead.

Destroy a listener

This endpoint is deprecated, use the listeners endpoint instead.

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{
    "data": [
        {
            "attributes": {
                "connections": 0,
                "listeners": [
                    {
                        "attributes": {
                            "parameters": {
                                "address": "::",
                                "authenticator": null,
                                "authenticator_options": null,
                                "connection_init_sql_file": null,
                                "port": 4008,
                                "protocol": "MariaDBProtocol",
                                "service": "Read-Connection-Router",
                                "socket": null,
                                "sql_mode": "default",
                                "ssl": false,
                                "ssl_ca_cert": null,
                                "ssl_cert": null,
                                "ssl_cert_verify_depth": 9,
                                "ssl_cipher": null,
                                "ssl_crl": null,
                                "ssl_key": null,
                                "ssl_verify_peer_certificate": false,
                                "ssl_verify_peer_host": false,
                                "ssl_version": "MAX",
                                "type": "listener",
                                "user_mapping_file": null
                            },
                            "source": {
                                "file": "/etc/maxscale.cnf",
                                "type": "static"
                            },
                            "state": "Running"
                        },
                        "id": "Read-Connection-Listener",
                        "relationships": {
                            "services": {
                                "data": [
                                    {
                                        "id": "Read-Connection-Router",
                                        "type": "services"
                                    }
                                ],
                                "links": {
                                    "related": "http://localhost:8989/v1/services/",
                                    "self": "http://localhost:8989/v1/listeners/Read-Connection-Listener/relationships/services/"
                                }
                            }
                        },
                        "type": "listeners"
                    }
                ],
                "parameters": {
                    "auth_all_servers": false,
                    "connection_keepalive": "300000ms",
                    "connection_timeout": "0ms",
                    "disable_sescmd_history": false,
                    "enable_root_user": false,
                    "idle_session_pool_time": "-1ms",
                    "localhost_match_wildcard_host": true,
                    "log_auth_warnings": true,
                    "log_debug": false,
                    "log_info": false,
                    "log_notice": false,
                    "log_warning": false,
                    "master_accept_reads": true,
                    "max_connections": 0,
                    "max_replication_lag": "0ms",
                    "max_sescmd_history": 50,
                    "multiplex_timeout": "60000ms",
                    "net_write_timeout": "0ms",
                    "password": "*****",
                    "prune_sescmd_history": true,
                    "rank": "primary",
                    "retain_last_statements": -1,
                    "router": "readconnroute",
                    "router_options": "master",
                    "session_trace": false,
                    "session_track_trx_state": false,
                    "strip_db_esc": true,
                    "type": "service",
                    "user": "maxuser",
                    "user_accounts_file": null,
                    "user_accounts_file_usage": "add_when_load_ok",
                    "version_string": null
                },
                "router": "readconnroute",
                "router_diagnostics": {
                    "queries": 0,
                    "server_query_statistics": []
                },
                "source": {
                    "file": "/etc/maxscale.cnf",
                    "type": "static"
                },
                "started": "Thu Jul 20 15:20:06 2023",
                "state": "Started",
                "statistics": {
                    "active_operations": 0,
                    "connections": 0,
                    "failed_auths": 0,
                    "max_connections": 0,
                    "routed_packets": 0,
                    "total_connections": 0
                },
                "total_connections": 0,
                "users": [
                    {
                        "default_role": "",
                        "global_priv": false,
                        "host": "localhost",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": false,
                        "user": "mariadb.sys"
                    },
                    {
                        "default_role": "",
                        "global_priv": true,
                        "host": "127.0.0.1",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": true,
                        "user": "maxuser"
                    },
                    {
                        "default_role": "",
                        "global_priv": true,
                        "host": "%",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": true,
                        "user": "maxuser"
                    },
                    {
                        "default_role": "",
                        "global_priv": true,
                        "host": "localhost",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": true,
                        "user": "root"
                    },
                    {
                        "default_role": "",
                        "global_priv": true,
                        "host": "%",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": true,
                        "user": "root"
                    }
                ]
            },
            "id": "Read-Connection-Router",
            "links": {
                "self": "http://localhost:8989/v1/services/Read-Connection-Router/"
            },
            "relationships": {
                "filters": {
                    "data": [
                        {
                            "id": "QLA",
                            "type": "filters"
                        },
                        {
                            "id": "Hint",
                            "type": "filters"
                        }
                    ],
                    "links": {
                        "related": "http://localhost:8989/v1/filters/",
                        "self": "http://localhost:8989/v1/services/Read-Connection-Router/relationships/filters/"
                    }
                },
                "listeners": {
                    "data": [
                        {
                            "id": "Read-Connection-Listener",
                            "type": "listeners"
                        }
                    ],
                    "links": {
                        "related": "http://localhost:8989/v1/listeners/",
                        "self": "http://localhost:8989/v1/services/Read-Connection-Router/relationships/listeners/"
                    }
                },
                "servers": {
                    "data": [
                        {
                            "id": "server1",
                            "type": "servers"
                        },
                        {
                            "id": "server2",
                            "type": "servers"
                        }
                    ],
                    "links": {
                        "related": "http://localhost:8989/v1/servers/",
                        "self": "http://localhost:8989/v1/services/Read-Connection-Router/relationships/servers/"
                    }
                }
            },
            "type": "services"
        },
        {
            "attributes": {
                "connections": 1,
                "listeners": [
                    {
                        "attributes": {
                            "parameters": {
                                "address": "::",
                                "authenticator": null,
                                "authenticator_options": null,
                                "connection_init_sql_file": null,
                                "port": 4006,
                                "protocol": "MariaDBProtocol",
                                "service": "RW-Split-Router",
                                "socket": null,
                                "sql_mode": "default",
                                "ssl": false,
                                "ssl_ca_cert": null,
                                "ssl_cert": null,
                                "ssl_cert_verify_depth": 9,
                                "ssl_cipher": null,
                                "ssl_crl": null,
                                "ssl_key": null,
                                "ssl_verify_peer_certificate": false,
                                "ssl_verify_peer_host": false,
                                "ssl_version": "MAX",
                                "type": "listener",
                                "user_mapping_file": null
                            },
                            "source": {
                                "file": "/etc/maxscale.cnf",
                                "type": "static"
                            },
                            "state": "Running"
                        },
                        "id": "RW-Split-Listener",
                        "relationships": {
                            "services": {
                                "data": [
                                    {
                                        "id": "RW-Split-Router",
                                        "type": "services"
                                    }
                                ],
                                "links": {
                                    "related": "http://localhost:8989/v1/services/",
                                    "self": "http://localhost:8989/v1/listeners/RW-Split-Listener/relationships/services/"
                                }
                            }
                        },
                        "type": "listeners"
                    }
                ],
                "parameters": {
                    "auth_all_servers": false,
                    "causal_reads": "false",
                    "causal_reads_timeout": "10000ms",
                    "connection_keepalive": "300000ms",
                    "connection_timeout": "0ms",
                    "delayed_retry": false,
                    "delayed_retry_timeout": "10000ms",
                    "disable_sescmd_history": false,
                    "enable_root_user": false,
                    "idle_session_pool_time": "-1ms",
                    "lazy_connect": false,
                    "localhost_match_wildcard_host": true,
                    "log_auth_warnings": true,
                    "log_debug": false,
                    "log_info": false,
                    "log_notice": false,
                    "log_warning": false,
                    "master_accept_reads": false,
                    "master_failure_mode": "fail_instantly",
                    "master_reconnection": false,
                    "max_connections": 0,
                    "max_sescmd_history": 50,
                    "max_slave_connections": 255,
                    "max_slave_replication_lag": "0ms",
                    "multiplex_timeout": "60000ms",
                    "net_write_timeout": "0ms",
                    "optimistic_trx": false,
                    "password": "*****",
                    "prune_sescmd_history": true,
                    "rank": "primary",
                    "retain_last_statements": -1,
                    "retry_failed_reads": true,
                    "reuse_prepared_statements": false,
                    "router": "readwritesplit",
                    "session_trace": false,
                    "session_track_trx_state": false,
                    "slave_connections": 255,
                    "slave_selection_criteria": "LEAST_CURRENT_OPERATIONS",
                    "strict_multi_stmt": false,
                    "strict_sp_calls": false,
                    "strip_db_esc": true,
                    "transaction_replay": false,
                    "transaction_replay_attempts": 5,
                    "transaction_replay_checksum": "full",
                    "transaction_replay_max_size": 1048576,
                    "transaction_replay_retry_on_deadlock": false,
                    "transaction_replay_retry_on_mismatch": false,
                    "transaction_replay_timeout": "0ms",
                    "type": "service",
                    "use_sql_variables_in": "all",
                    "user": "maxuser",
                    "user_accounts_file": null,
                    "user_accounts_file_usage": "add_when_load_ok",
                    "version_string": null
                },
                "router": "readwritesplit",
                "router_diagnostics": {
                    "avg_sescmd_history_length": 0,
                    "max_sescmd_history_length": 0,
                    "queries": 2,
                    "replayed_transactions": 0,
                    "ro_transactions": 0,
                    "route_all": 1,
                    "route_master": 1,
                    "route_slave": 0,
                    "rw_transactions": 0,
                    "server_query_statistics": [
                        {
                            "avg_selects_per_session": 0,
                            "avg_sess_duration": "0ns",
                            "id": "server1",
                            "read": 2,
                            "total": 2,
                            "write": 0
                        },
                        {
                            "avg_selects_per_session": 0,
                            "avg_sess_duration": "0ns",
                            "id": "server2",
                            "read": 1,
                            "total": 1,
                            "write": 0
                        }
                    ]
                },
                "source": {
                    "file": "/etc/maxscale.cnf",
                    "type": "static"
                },
                "started": "Thu Jul 20 15:20:06 2023",
                "state": "Started",
                "statistics": {
                    "active_operations": 0,
                    "connections": 1,
                    "failed_auths": 0,
                    "max_connections": 1,
                    "routed_packets": 2,
                    "total_connections": 1
                },
                "total_connections": 1,
                "users": [
                    {
                        "default_role": "",
                        "global_priv": false,
                        "host": "localhost",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": false,
                        "user": "mariadb.sys"
                    },
                    {
                        "default_role": "",
                        "global_priv": true,
                        "host": "127.0.0.1",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": true,
                        "user": "maxuser"
                    },
                    {
                        "default_role": "",
                        "global_priv": true,
                        "host": "%",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": true,
                        "user": "maxuser"
                    },
                    {
                        "default_role": "",
                        "global_priv": true,
                        "host": "localhost",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": true,
                        "user": "root"
                    },
                    {
                        "default_role": "",
                        "global_priv": true,
                        "host": "%",
                        "plugin": "mysql_native_password",
                        "proxy_priv": false,
                        "ssl": false,
                        "super_priv": true,
                        "user": "root"
                    }
                ]
            },
            "id": "RW-Split-Router",
            "links": {
                "self": "http://localhost:8989/v1/services/RW-Split-Router/"
            },
            "relationships": {
                "listeners": {
                    "data": [
                        {
                            "id": "RW-Split-Listener",
                            "type": "listeners"
                        }
                    ],
                    "links": {
                        "related": "http://localhost:8989/v1/listeners/",
                        "self": "http://localhost:8989/v1/services/RW-Split-Router/relationships/listeners/"
                    }
                },
                "monitors": {
                    "data": [
                        {
                            "id": "MariaDB-Monitor",
                            "type": "monitors"
                        }
                    ],
                    "links": {
                        "related": "http://localhost:8989/v1/monitors/",
                        "self": "http://localhost:8989/v1/services/RW-Split-Router/relationships/monitors/"
                    }
                }
            },
            "type": "services"
        }
    ],
    "links": {
        "self": "http://localhost:8989/v1/services/"
    }
}

MaxScale 21.06 MaxScale Resource

The MaxScale resource represents a MaxScale instance and it is the core on top of which the modules build upon.

MaxScale Resource

Resource Operations

Get global information

Retrieve global information about a MaxScale instance. This includes various file locations, configuration options and version information.

Response

Status: 200 OK

Update MaxScale parameters

Update MaxScale parameters. The request body must define updated values for thedata.attributes.parameters object. The parameters that can be modified are listed in the /v1/maxscale/modules/maxscale endpoint and have the modifiable value set to true.

Response

Parameters modified:

Status: 204 No Content

Invalid JSON body:

Status: 403 Forbidden

Get thread information

Get the information and statistics of a particular thread. The :id in the URI must map to a valid thread number between 0 and the configured value of threads.

Response

Status: 200 OK

Get information for all threads

Get the information for all threads. Returns a collection of threads resources.

Response

Status: 200 OK

Get logging information

Get information about the current state of logging, enabled log files and the location where the log files are stored.

Note: The parameters in this endpoint are a subset of the parameters in the/v1/maxscale endpoint. Because of this, the parameters in this endpoint are deprecated as of MaxScale 6.0.

Note: In MaxScale 2.5 the log_throttling and ms_timestamp parameters were incorrectly named as throttling and highprecision. In MaxScale 6, the parameter names are now correct which means the parameters declared here aren't fully backwards compatible.

Response

Status: 200 OK

Get log data

Get the contents of the MaxScale logs. This endpoint was added in MaxScale 6.

To navigate the log, use the prev link to move backwards to older log entries. The latest log entries can be read with the last link.

The entries are sorted in ascending order by the time they were logged. This means that with the default parameters, the latest logged event is the last element in the returned array.

Parameters

This endpoint supports the following parameters:

page[size]
Set number of rows of data to read. By default, 50 rows of data are read from the log.
page[cursor]

Response

Status: 200 OK

Stream log data

Stream the contents of the MaxScale logs. This endpoint was added in MaxScale 6.

This endpoint opens a connection and streams the contents of the log to it. Each WebSocket message will contain the JSON representation of the log message. The JSON is formatted in the same way as the values in the log array of the /v1/maxscale/logs/data endpoint:

Limitations

If the client writes any data to the open socket, it will be treated as an error and the stream is closed.
The WebSocket ping and close commands are not yet supported and will be treated as errors.
When maxlog is used as source of log data, any log messages logged after log rotation will not be sent if the file was moved or truncated. To fetch new events after log rotation, reopen the WebSocket connection.

Parameters

This endpoint supports the following parameters:

page[cursor]
Set position from where the log data is retrieved. The default position to retrieve the log data is the end of the log. To stream data from a known point, first read the data via the/v1/maxscale/logs/data endpoint and then use the id value of the newest log message (i.e. the first value in the log array) to start the stream.

Response

Upgrade started:

Status: 101 Switching Protocols

Client didn't request a WebSocket upgrade:

Status: 426 Upgrade Required

Update logging parameters

Note: The modification of logging parameters via this endpoint has deprecated in MaxScale 6.0. The parameters should be modified with the/v1/maxscale endpoint instead.

Any PATCH requests done to this endpoint will be redirected to the/v1/maxscale endpoint. Due to the mispelling of the ms_timestamp andlog_throttling parameters, this is not fully backwards compatible.

Update logging parameters. The request body must define updated values for thedata.attributes.parameters object. All logging parameters can be altered at runtime.

Response

Parameters modified:

Status: 204 No Content

Invalid JSON body:

Status: 403 Forbidden

Flush and rotate log files

Flushes any pending messages to disk and reopens the log files. The body of the message is ignored.

Response

Status: 204 No Content

Get task schedule

Retrieve all pending tasks that are queued for execution.

Response

Status: 200 OK

Get a loaded module

Retrieve information about a loaded module. The :name must be the name of a valid loaded module or either maxscale or servers.

The maxscale module will display the global configuration options (i.e. everything under the [maxscale] section) as a module.

The servers module displays the server object type and the configuration parameters it accepts as a module.

Any parameter with the modifiable value set to true can be modified at runtime using a PATCH command on the corresponding object endpoint.

Response

Status: 200 OK

Get all loaded modules

Retrieve information about all loaded modules.

This endpoint supports the load=all parameter. When defined, all modules located in the MaxScale module directory (libdir) will be loaded. This allows one to see the parameters of a module before the object is created.

Response

Status: 200 OK

Call a module command

For read-only commands:

For commands that can modify data:

Modules can expose commands that can be called via the REST API. The module resource lists all commands in the data.attributes.commands list. Each value is a command sub-resource identified by its id field and the HTTP method the command uses is defined by the attributes.method field.

The :module in the URI must be a valid name of a loaded module and :command must be a valid command identifier that is exposed by that module. All parameters to the module commands are passed as HTTP request parameters.

Here is an example POST requests to the dbfwfilter module command reload with two parameters, the name of the filter instance and the path to a file:

Response

Command with output:

Status: 200 OK

The contents of the meta field will contain the output of the module command. This output depends on the command that is being executed. It can contain any valid JSON value.

Command with no output:

Status: 204 No Content

Classify a statement

Classify provided statement and return the result.

Response

Status: 200 OK

_{This page is licensed: CC BY-SA / Gnu FDL}

{
    "data": {
        "attributes": {
            "api": "router",
            "commands": [],
            "description": "A Read/Write splitting router for enhancement read scalability",
            "maturity": "GA",
            "module_type": "Router",
            "parameters": [
                {
                    "default_value": "false",
                    "description": "Causal reads mode",
                    "enum_values": [
                        "false",
                        "off",
                        "0",
                        "true",
                        "on",
                        "1",
                        "none",
                        "local",
                        "global",
                        "fast"
                    ],
                    "mandatory": false,
                    "modifiable": true,
                    "name": "causal_reads",
                    "type": "enum"
                },
                {
                    "default_value": "10000ms",
                    "description": "Timeout for the slave synchronization",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "causal_reads_timeout",
                    "type": "duration",
                    "unit": "ms"
                },
                {
                    "default_value": false,
                    "description": "Retry failed writes outside of transactions",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "delayed_retry",
                    "type": "bool"
                },
                {
                    "default_value": "10000ms",
                    "description": "Timeout for delayed_retry",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "delayed_retry_timeout",
                    "type": "duration",
                    "unit": "ms"
                },
                {
                    "default_value": false,
                    "description": "Create connections only when needed",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "lazy_connect",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Use master for reads",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "master_accept_reads",
                    "type": "bool"
                },
                {
                    "default_value": "fail_instantly",
                    "description": "Master failure mode behavior",
                    "enum_values": [
                        "fail_instantly",
                        "fail_on_write",
                        "error_on_write"
                    ],
                    "mandatory": false,
                    "modifiable": true,
                    "name": "master_failure_mode",
                    "type": "enum"
                },
                {
                    "default_value": false,
                    "description": "Reconnect to master",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "master_reconnection",
                    "type": "bool"
                },
                {
                    "default_value": 255,
                    "description": "Maximum number of slave connections",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "max_slave_connections",
                    "type": "count"
                },
                {
                    "default_value": "0ms",
                    "description": "Maximum allowed slave replication lag",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "max_slave_replication_lag",
                    "type": "duration",
                    "unit": "ms"
                },
                {
                    "default_value": false,
                    "description": "Optimistically offload transactions to slaves",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "optimistic_trx",
                    "type": "bool"
                },
                {
                    "default_value": true,
                    "description": "Automatically retry failed reads outside of transactions",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "retry_failed_reads",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Reuse identical prepared statements inside the same connection",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "reuse_prepared_statements",
                    "type": "bool"
                },
                {
                    "default_value": 255,
                    "description": "Starting number of slave connections",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "slave_connections",
                    "type": "count"
                },
                {
                    "default_value": "LEAST_CURRENT_OPERATIONS",
                    "description": "Slave selection criteria",
                    "enum_values": [
                        "LEAST_GLOBAL_CONNECTIONS",
                        "LEAST_ROUTER_CONNECTIONS",
                        "LEAST_BEHIND_MASTER",
                        "LEAST_CURRENT_OPERATIONS",
                        "ADAPTIVE_ROUTING"
                    ],
                    "mandatory": false,
                    "modifiable": true,
                    "name": "slave_selection_criteria",
                    "type": "enum"
                },
                {
                    "default_value": false,
                    "description": "Lock connection to master after multi-statement query",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "strict_multi_stmt",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Lock connection to master after a stored procedure is executed",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "strict_sp_calls",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Retry failed transactions",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "transaction_replay",
                    "type": "bool"
                },
                {
                    "default_value": 5,
                    "description": "Maximum number of times to retry a transaction",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "transaction_replay_attempts",
                    "type": "count"
                },
                {
                    "default_value": "full",
                    "description": "Type of checksum to calculate for results",
                    "enum_values": [
                        "full",
                        "result_only",
                        "no_insert_id"
                    ],
                    "mandatory": false,
                    "modifiable": true,
                    "name": "transaction_replay_checksum",
                    "type": "enum"
                },
                {
                    "default_value": 1048576,
                    "description": "Maximum size of transaction to retry",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "transaction_replay_max_size",
                    "type": "size"
                },
                {
                    "default_value": false,
                    "description": "Retry transaction on deadlock",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "transaction_replay_retry_on_deadlock",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Retry transaction on checksum mismatch",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "transaction_replay_retry_on_mismatch",
                    "type": "bool"
                },
                {
                    "default_value": "0ms",
                    "description": "Timeout for transaction replay",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "transaction_replay_timeout",
                    "type": "duration",
                    "unit": "ms"
                },
                {
                    "default_value": "all",
                    "description": "Whether to route SQL variable modifications to all servers or only to the master",
                    "enum_values": [
                        "all",
                        "master"
                    ],
                    "mandatory": false,
                    "modifiable": true,
                    "name": "use_sql_variables_in",
                    "type": "enum"
                },
                {
                    "default_value": false,
                    "description": "Retrieve users from all backend servers instead of only one",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "auth_all_servers",
                    "type": "bool"
                },
                {
                    "default_value": "300000ms",
                    "description": "How ofted idle connections are pinged",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "connection_keepalive",
                    "type": "duration",
                    "unit": "ms"
                },
                {
                    "default_value": "0ms",
                    "description": "Connection idle timeout",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "connection_timeout",
                    "type": "duration",
                    "unit": "ms"
                },
                {
                    "default_value": false,
                    "description": "Disable session command history",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "disable_sescmd_history",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Allow the root user to connect to this service",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "enable_root_user",
                    "type": "bool"
                },
                {
                    "default_value": "-1ms",
                    "description": "Put connections into pool after session has been idle for this long",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "idle_session_pool_time",
                    "type": "duration",
                    "unit": "ms"
                },
                {
                    "default_value": true,
                    "description": "Match localhost to wildcard host",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "localhost_match_wildcard_host",
                    "type": "bool"
                },
                {
                    "default_value": true,
                    "description": "Log a warning when client authentication fails",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "log_auth_warnings",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Log debug messages for this service (debug builds only)",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "log_debug",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Log info messages for this service",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "log_info",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Log notice messages for this service",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "log_notice",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Log warning messages for this service",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "log_warning",
                    "type": "bool"
                },
                {
                    "default_value": 0,
                    "description": "Maximum number of connections",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "max_connections",
                    "type": "count"
                },
                {
                    "default_value": 50,
                    "description": "Session command history size",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "max_sescmd_history",
                    "type": "count"
                },
                {
                    "default_value": "60000ms",
                    "description": "How long a session can wait for a connection to become available",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "multiplex_timeout",
                    "type": "duration",
                    "unit": "ms"
                },
                {
                    "default_value": "0ms",
                    "description": "Network write timeout",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "net_write_timeout",
                    "type": "duration",
                    "unit": "ms"
                },
                {
                    "description": "Password for the user used to retrieve database users",
                    "mandatory": true,
                    "modifiable": true,
                    "name": "password",
                    "type": "string"
                },
                {
                    "default_value": true,
                    "description": "Prune old session command history if the limit is exceeded",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "prune_sescmd_history",
                    "type": "bool"
                },
                {
                    "default_value": "primary",
                    "description": "Service rank",
                    "enum_values": [
                        "primary",
                        "secondary"
                    ],
                    "mandatory": false,
                    "modifiable": true,
                    "name": "rank",
                    "type": "enum"
                },
                {
                    "default_value": -1,
                    "description": "Number of statements kept in memory",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "retain_last_statements",
                    "type": "int"
                },
                {
                    "default_value": false,
                    "description": "Enable session tracing for this service",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "session_trace",
                    "type": "bool"
                },
                {
                    "default_value": false,
                    "description": "Track session state using server responses",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "session_track_trx_state",
                    "type": "bool"
                },
                {
                    "default_value": true,
                    "description": "Strip escape characters from database names",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "strip_db_esc",
                    "type": "bool"
                },
                {
                    "description": "Username used to retrieve database users",
                    "mandatory": true,
                    "modifiable": true,
                    "name": "user",
                    "type": "string"
                },
                {
                    "description": "Load additional users from a file",
                    "mandatory": false,
                    "modifiable": false,
                    "name": "user_accounts_file",
                    "type": "path"
                },
                {
                    "default_value": "add_when_load_ok",
                    "description": "When and how the user accounts file is used",
                    "enum_values": [
                        "add_when_load_ok",
                        "file_only_always"
                    ],
                    "mandatory": false,
                    "modifiable": false,
                    "name": "user_accounts_file_usage",
                    "type": "enum"
                },
                {
                    "description": "Custom version string to use",
                    "mandatory": false,
                    "modifiable": true,
                    "name": "version_string",
                    "type": "string"
                }
            ],
            "version": "V1.1.0"
        },
        "id": "readwritesplit",
        "links": {
            "self": "http://localhost:8989/v1/modules/readwritesplit/"
        },
        "type": "modules"
    },
    "links": {
        "self": "http://localhost:8989/v1/maxscale/modules/"
    }
}

{
    "data": [
        {
            "attributes": {
                "commands": [],
                "description": "maxscale",
                "maturity": "GA",
                "module_type": "maxscale",
                "parameters": [
                    {
                        "default_value": true,
                        "description": "Admin interface authentication.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_auth",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "description": "Admin interface is enabled.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_enabled",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "description": "Enable admin GUI.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_gui",
                        "type": "bool"
                    },
                    {
                        "default_value": "127.0.0.1",
                        "description": "Admin interface host.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_host",
                        "type": "string"
                    },
                    {
                        "default_value": true,
                        "description": "Log admin interface authentication failures.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "admin_log_auth_failures",
                        "type": "bool"
                    },
                    {
                        "description": "PAM service for read-only users.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_pam_readonly_service",
                        "type": "string"
                    },
                    {
                        "description": "PAM service for read-write users.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_pam_readwrite_service",
                        "type": "string"
                    },
                    {
                        "default_value": 8989,
                        "description": "Admin interface port.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_port",
                        "type": "int"
                    },
                    {
                        "default_value": true,
                        "description": "Only serve GUI over HTTPS.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_secure_gui",
                        "type": "bool"
                    },
                    {
                        "description": "Admin SSL CA cert",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_ssl_ca_cert",
                        "type": "string"
                    },
                    {
                        "description": "Admin SSL cert",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_ssl_cert",
                        "type": "string"
                    },
                    {
                        "description": "Admin SSL key",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_ssl_key",
                        "type": "string"
                    },
                    {
                        "default_value": "MAX",
                        "description": "Minimum required TLS protocol version for the REST API",
                        "enum_values": [
                            "MAX",
                            "TLSv10",
                            "TLSv11",
                            "TLSv12",
                            "TLSv13"
                        ],
                        "mandatory": false,
                        "modifiable": false,
                        "name": "admin_ssl_version",
                        "type": "enum"
                    },
                    {
                        "default_value": "10000ms",
                        "description": "Connection timeout for fetching user accounts.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "auth_connect_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "10000ms",
                        "description": "Read timeout for fetching user accounts (deprecated).",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "auth_read_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "10000ms",
                        "description": "Write timeout for fetching user accounts (deprecated).",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "auth_write_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "description": "Cluster used for configuration synchronization. If left empty (i.e. value is \"\"), synchronization is not done.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "config_sync_cluster",
                        "type": "string"
                    },
                    {
                        "default_value": "mysql",
                        "description": "Database where the 'maxscale_config' table is created.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "config_sync_db",
                        "type": "string"
                    },
                    {
                        "default_value": "5000ms",
                        "description": "How often to synchronize the configuration.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "config_sync_interval",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "description": "Password for the user used for configuration synchronization.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "config_sync_password",
                        "type": "string"
                    },
                    {
                        "default_value": "10000ms",
                        "description": "Timeout for the configuration synchronization operations.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "config_sync_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "description": "User account used for configuration synchronization.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "config_sync_user",
                        "type": "string"
                    },
                    {
                        "description": "Debug options",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "debug",
                        "type": "string"
                    },
                    {
                        "default_value": "never",
                        "description": "In what circumstances should the last statements that a client sent be dumped.",
                        "enum_values": [
                            "on_close",
                            "on_error",
                            "never"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "dump_last_statements",
                        "type": "enum"
                    },
                    {
                        "default_value": true,
                        "description": "Specifies whether persisted configuration files should be loaded on startup.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "load_persisted_configs",
                        "type": "bool"
                    },
                    {
                        "description": "Local address to use when connecting.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "local_address",
                        "type": "string"
                    },
                    {
                        "default_value": false,
                        "description": "Specifies whether debug messages should be logged (meaningful only with debug builds).",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_debug",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Specifies whether info messages should be logged.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_info",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "description": "Specifies whether notice messages should be logged.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_notice",
                        "type": "bool"
                    },
                    {
                        "default_value": {
                            "count": 10,
                            "suppress": 10000,
                            "window": 1000
                        },
                        "description": "Limit the amount of identical log messages than can be logged during a certain time period.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_throttling",
                        "type": "throttling"
                    },
                    {
                        "default_value": false,
                        "description": "Log a warning when a user with super privilege logs in.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "log_warn_super_user",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "description": "Specifies whether warning messages should be logged.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_warning",
                        "type": "bool"
                    },
                    {
                        "default_value": 10,
                        "description": "The maximum number of authentication failures that are tolerated before a host is temporarily blocked.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "max_auth_errors_until_block",
                        "type": "int"
                    },
                    {
                        "default_value": true,
                        "description": "Log to MaxScale's own log.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "maxlog",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Enable or disable high precision timestamps.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ms_timestamp",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "True if MaxScale is in passive mode.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "passive",
                        "type": "bool"
                    },
                    {
                        "default_value": "qc_sqlite",
                        "description": "The name of the query classifier to load.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "query_classifier",
                        "type": "string"
                    },
                    {
                        "description": "Arguments for the query classifier.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "query_classifier_args",
                        "type": "string"
                    },
                    {
                        "default_value": 5001955123,
                        "description": "Maximum amount of memory used by query classifier cache.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "query_classifier_cache_size",
                        "type": "size"
                    },
                    {
                        "default_value": 1,
                        "description": "Number of times an interrupted query is retried.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "query_retries",
                        "type": "int"
                    },
                    {
                        "default_value": "5000ms",
                        "description": "The total timeout in seconds for any retried queries.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "query_retry_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "0ms",
                        "description": "How often should the load of the worker threads be checked and rebalancing be made.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "rebalance_period",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": 20,
                        "description": "If the difference in load between the thread with the maximum load and the thread with the minimum load is larger than the value of this parameter, then work will be moved from the former to the latter.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "rebalance_threshold",
                        "type": "int"
                    },
                    {
                        "default_value": 10,
                        "description": "The load of how many seconds should be taken into account when rebalancing.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "rebalance_window",
                        "type": "count"
                    },
                    {
                        "default_value": 0,
                        "description": "How many statements should be retained for each session for debugging purposes.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "retain_last_statements",
                        "type": "count"
                    },
                    {
                        "default_value": 0,
                        "description": "How many log entries are stored in the session specific trace log.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "session_trace",
                        "type": "count"
                    },
                    {
                        "default_value": false,
                        "description": "Do not resolve client IP addresses to hostnames during authentication",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "skip_name_resolve",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Skip service and monitor permission checks.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "skip_permission_checks",
                        "type": "bool"
                    },
                    {
                        "default_value": "default",
                        "description": "The query classifier sql mode.",
                        "enum_values": [
                            "default",
                            "oracle"
                        ],
                        "mandatory": false,
                        "modifiable": false,
                        "name": "sql_mode",
                        "type": "enum"
                    },
                    {
                        "default_value": true,
                        "description": "Log to syslog.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "syslog",
                        "type": "bool"
                    },
                    {
                        "default_value": 8,
                        "description": "This parameter specifies how many threads will be used for handling the routing.",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "threads",
                        "type": "count"
                    },
                    {
                        "default_value": "0ms",
                        "description": "How often the users will be refreshed.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "users_refresh_interval",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "30000ms",
                        "description": "How often the users can be refreshed.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "users_refresh_time",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": 16777216,
                        "description": "High water mark of dcb write queue.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "writeq_high_water",
                        "type": "size"
                    },
                    {
                        "default_value": 8192,
                        "description": "Low water mark of dcb write queue.",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "writeq_low_water",
                        "type": "size"
                    }
                ],
                "version": "6.4.7"
            },
            "id": "maxscale",
            "links": {
                "self": "http://localhost:8989/v1/modules/maxscale/"
            },
            "type": "modules"
        },
        {
            "attributes": {
                "commands": [],
                "description": "servers",
                "maturity": "GA",
                "module_type": "servers",
                "parameters": [
                    {
                        "description": "Server address",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "address",
                        "type": "string"
                    },
                    {
                        "description": "Server authenticator (deprecated)",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "authenticator",
                        "type": "string"
                    },
                    {
                        "description": "Server disk space threshold",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "disk_space_threshold",
                        "type": "disk_space_limits"
                    },
                    {
                        "default_value": 0,
                        "description": "Server extra port",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "extra_port",
                        "type": "count"
                    },
                    {
                        "default_value": 0,
                        "description": "Maximum routing connections",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "max_routing_connections",
                        "type": "count"
                    },
                    {
                        "description": "Monitor password",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "monitorpw",
                        "type": "password"
                    },
                    {
                        "description": "Monitor user",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "monitoruser",
                        "type": "string"
                    },
                    {
                        "default_value": "0ms",
                        "description": "Maximum time that a connection can be in the pool",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "persistmaxtime",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": 0,
                        "description": "Maximum size of the persistent connection pool",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "persistpoolmax",
                        "type": "count"
                    },
                    {
                        "default_value": 3306,
                        "description": "Server port",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "port",
                        "type": "count"
                    },
                    {
                        "default_value": 0,
                        "description": "Server priority",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "priority",
                        "type": "int"
                    },
                    {
                        "description": "Server protocol (deprecated)",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "protocol",
                        "type": "string"
                    },
                    {
                        "default_value": false,
                        "description": "Enable proxy protocol",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "proxy_protocol",
                        "type": "bool"
                    },
                    {
                        "default_value": "primary",
                        "description": "Server rank",
                        "enum_values": [
                            "primary",
                            "secondary"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "rank",
                        "type": "enum"
                    },
                    {
                        "description": "Server UNIX socket",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "socket",
                        "type": "string"
                    },
                    {
                        "default_value": false,
                        "description": "Enable TLS for server",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl",
                        "type": "bool"
                    },
                    {
                        "description": "TLS certificate authority",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_ca_cert",
                        "type": "path"
                    },
                    {
                        "description": "TLS public certificate",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_cert",
                        "type": "path"
                    },
                    {
                        "default_value": 9,
                        "description": "TLS certificate verification depth",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_cert_verify_depth",
                        "type": "count"
                    },
                    {
                        "description": "TLS cipher list",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_cipher",
                        "type": "string"
                    },
                    {
                        "description": "TLS private key",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_key",
                        "type": "path"
                    },
                    {
                        "default_value": false,
                        "description": "Verify TLS peer certificate",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_verify_peer_certificate",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Verify TLS peer host",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_verify_peer_host",
                        "type": "bool"
                    },
                    {
                        "default_value": "MAX",
                        "description": "Minimum TLS protocol version",
                        "enum_values": [
                            "MAX",
                            "TLSv10",
                            "TLSv11",
                            "TLSv12",
                            "TLSv13"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_version",
                        "type": "enum"
                    },
                    {
                        "default_value": "server",
                        "description": "Object type",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "type",
                        "type": "string"
                    }
                ],
                "version": "6.4.7"
            },
            "id": "servers",
            "links": {
                "self": "http://localhost:8989/v1/modules/servers/"
            },
            "type": "modules"
        },
        {
            "attributes": {
                "api": "filter",
                "commands": [],
                "description": "A hint parsing filter",
                "maturity": "Alpha",
                "module_type": "Filter",
                "parameters": [],
                "version": "V1.0.0"
            },
            "id": "hintfilter",
            "links": {
                "self": "http://localhost:8989/v1/modules/hintfilter/"
            },
            "type": "modules"
        },
        {
            "attributes": {
                "api": "authenticator",
                "commands": [],
                "description": "Standard MySQL/MariaDB authentication (mysql_native_password)",
                "maturity": "GA",
                "module_type": "Authenticator",
                "parameters": [],
                "version": "V2.1.0"
            },
            "id": "MariaDBAuth",
            "links": {
                "self": "http://localhost:8989/v1/modules/MariaDBAuth/"
            },
            "type": "modules"
        },
        {
            "attributes": {
                "api": "monitor",
                "commands": [
                    {
                        "attributes": {
                            "arg_max": 1,
                            "arg_min": 1,
                            "description": "Fetch result of the last scheduled command.",
                            "method": "GET",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                }
                            ]
                        },
                        "id": "fetch-cmd-result",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/fetch-cmd-result/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 1,
                            "arg_min": 1,
                            "description": "Fetch result of the last scheduled command.",
                            "method": "GET",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                }
                            ]
                        },
                        "id": "fetch-cmd-results",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/fetch-cmd-results/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 1,
                            "arg_min": 1,
                            "description": "Release any held server locks for 1 minute. Does not wait for completion.",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                }
                            ]
                        },
                        "id": "async-release-locks",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/async-release-locks/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 1,
                            "arg_min": 1,
                            "description": "Release any held server locks for 1 minute.",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                }
                            ]
                        },
                        "id": "release-locks",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/release-locks/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 2,
                            "arg_min": 1,
                            "description": "Delete slave connections, delete binary logs and set up replication (dangerous). Does not wait for completion.",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                },
                                {
                                    "description": "Master server (optional)",
                                    "required": false,
                                    "type": "[SERVER]"
                                }
                            ]
                        },
                        "id": "async-reset-replication",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/async-reset-replication/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 2,
                            "arg_min": 1,
                            "description": "Delete slave connections, delete binary logs and set up replication (dangerous)",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                },
                                {
                                    "description": "Master server (optional)",
                                    "required": false,
                                    "type": "[SERVER]"
                                }
                            ]
                        },
                        "id": "reset-replication",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/reset-replication/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 2,
                            "arg_min": 2,
                            "description": "Rejoin server to a cluster. Does not wait for completion.",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                },
                                {
                                    "description": "Joining server",
                                    "required": true,
                                    "type": "SERVER"
                                }
                            ]
                        },
                        "id": "async-rejoin",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/async-rejoin/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 2,
                            "arg_min": 2,
                            "description": "Rejoin server to a cluster",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                },
                                {
                                    "description": "Joining server",
                                    "required": true,
                                    "type": "SERVER"
                                }
                            ]
                        },
                        "id": "rejoin",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/rejoin/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 1,
                            "arg_min": 1,
                            "description": "Schedule master failover. Does not wait for completion.",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                }
                            ]
                        },
                        "id": "async-failover",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/async-failover/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 1,
                            "arg_min": 1,
                            "description": "Perform master failover",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                }
                            ]
                        },
                        "id": "failover",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/failover/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 3,
                            "arg_min": 1,
                            "description": "Schedule master switchover. Does not wait for completion",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                },
                                {
                                    "description": "New master (optional)",
                                    "required": false,
                                    "type": "[SERVER]"
                                },
                                {
                                    "description": "Current master (optional)",
                                    "required": false,
                                    "type": "[SERVER]"
                                }
                            ]
                        },
                        "id": "async-switchover",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/async-switchover/"
                        },
                        "type": "module_command"
                    },
                    {
                        "attributes": {
                            "arg_max": 3,
                            "arg_min": 1,
                            "description": "Perform master switchover",
                            "method": "POST",
                            "parameters": [
                                {
                                    "description": "Monitor name",
                                    "required": true,
                                    "type": "MONITOR"
                                },
                                {
                                    "description": "New master (optional)",
                                    "required": false,
                                    "type": "[SERVER]"
                                },
                                {
                                    "description": "Current master (optional)",
                                    "required": false,
                                    "type": "[SERVER]"
                                }
                            ]
                        },
                        "id": "switchover",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/mariadbmon/switchover/"
                        },
                        "type": "module_command"
                    }
                ],
                "description": "A MariaDB Master/Slave replication monitor",
                "maturity": "GA",
                "module_type": "Monitor",
                "parameters": [
                    {
                        "mandatory": false,
                        "name": "detect_stale_master",
                        "type": "bool"
                    },
                    {
                        "mandatory": false,
                        "name": "detect_stale_slave",
                        "type": "bool"
                    },
                    {
                        "mandatory": false,
                        "name": "detect_standalone_master",
                        "type": "bool"
                    },
                    {
                        "default_value": 5,
                        "mandatory": false,
                        "name": "failcount",
                        "type": "count"
                    },
                    {
                        "default_value": false,
                        "mandatory": false,
                        "name": "ignore_external_masters",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "mandatory": false,
                        "name": "auto_failover",
                        "type": "bool"
                    },
                    {
                        "default_value": "90s",
                        "mandatory": false,
                        "name": "failover_timeout",
                        "type": "duration",
                        "unit": "s"
                    },
                    {
                        "default_value": "90s",
                        "mandatory": false,
                        "name": "switchover_timeout",
                        "type": "duration",
                        "unit": "s"
                    },
                    {
                        "mandatory": false,
                        "name": "replication_user",
                        "type": "string"
                    },
                    {
                        "mandatory": false,
                        "name": "replication_password",
                        "type": "password string"
                    },
                    {
                        "default_value": false,
                        "mandatory": false,
                        "name": "replication_master_ssl",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "mandatory": false,
                        "name": "verify_master_failure",
                        "type": "bool"
                    },
                    {
                        "default_value": "10s",
                        "mandatory": false,
                        "name": "master_failure_timeout",
                        "type": "duration",
                        "unit": "s"
                    },
                    {
                        "default_value": false,
                        "mandatory": false,
                        "name": "auto_rejoin",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "mandatory": false,
                        "name": "enforce_read_only_slaves",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "mandatory": false,
                        "name": "enforce_writable_master",
                        "type": "bool"
                    },
                    {
                        "mandatory": false,
                        "name": "servers_no_promotion",
                        "type": "serverlist"
                    },
                    {
                        "mandatory": false,
                        "name": "promotion_sql_file",
                        "type": "path"
                    },
                    {
                        "mandatory": false,
                        "name": "demotion_sql_file",
                        "type": "path"
                    },
                    {
                        "default_value": false,
                        "mandatory": false,
                        "name": "switchover_on_low_disk_space",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "mandatory": false,
                        "name": "maintenance_on_low_disk_space",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "mandatory": false,
                        "name": "handle_events",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "mandatory": false,
                        "name": "assume_unique_hostnames",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "mandatory": false,
                        "name": "enforce_simple_topology",
                        "type": "bool"
                    },
                    {
                        "default_value": "none",
                        "enum_values": [
                            "none",
                            "majority_of_running",
                            "majority_of_all"
                        ],
                        "mandatory": false,
                        "name": "cooperative_monitoring_locks",
                        "type": "enum"
                    },
                    {
                        "default_value": "primary_monitor_master",
                        "enum_values": [
                            "none",
                            "connecting_slave",
                            "connected_slave",
                            "running_slave",
                            "primary_monitor_master"
                        ],
                        "mandatory": false,
                        "name": "master_conditions",
                        "type": "enum_mask"
                    },
                    {
                        "default_value": "none",
                        "enum_values": [
                            "linked_master",
                            "running_master",
                            "writable_master",
                            "primary_monitor_master",
                            "none"
                        ],
                        "mandatory": false,
                        "name": "slave_conditions",
                        "type": "enum_mask"
                    },
                    {
                        "default_value": -1,
                        "mandatory": false,
                        "name": "script_max_replication_lag",
                        "type": "int"
                    },
                    {
                        "mandatory": true,
                        "name": "user",
                        "type": "string"
                    },
                    {
                        "mandatory": true,
                        "name": "password",
                        "type": "password string"
                    },
                    {
                        "default_value": "2000ms",
                        "mandatory": false,
                        "name": "monitor_interval",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "3s",
                        "mandatory": false,
                        "name": "backend_connect_timeout",
                        "type": "duration",
                        "unit": "s"
                    },
                    {
                        "default_value": "3s",
                        "mandatory": false,
                        "name": "backend_read_timeout",
                        "type": "duration",
                        "unit": "s"
                    },
                    {
                        "default_value": "3s",
                        "mandatory": false,
                        "name": "backend_write_timeout",
                        "type": "duration",
                        "unit": "s"
                    },
                    {
                        "default_value": 1,
                        "mandatory": false,
                        "name": "backend_connect_attempts",
                        "type": "count"
                    },
                    {
                        "default_value": "28800s",
                        "mandatory": false,
                        "name": "journal_max_age",
                        "type": "duration",
                        "unit": "s"
                    },
                    {
                        "mandatory": false,
                        "name": "disk_space_threshold",
                        "type": "string"
                    },
                    {
                        "default_value": "0ms",
                        "mandatory": false,
                        "name": "disk_space_check_interval",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "mandatory": false,
                        "name": "script",
                        "type": "string"
                    },
                    {
                        "default_value": "90s",
                        "mandatory": false,
                        "name": "script_timeout",
                        "type": "duration",
                        "unit": "s"
                    },
                    {
                        "default_value": "all",
                        "enum_values": [
                            "all",
                            "master_down",
                            "master_up",
                            "slave_down",
                            "slave_up",
                            "server_down",
                            "server_up",
                            "synced_down",
                            "synced_up",
                            "donor_down",
                            "donor_up",
                            "lost_master",
                            "lost_slave",
                            "lost_synced",
                            "lost_donor",
                            "new_master",
                            "new_slave",
                            "new_synced",
                            "new_donor",
                            "relay_up",
                            "relay_down",
                            "lost_relay",
                            "new_relay",
                            "blr_up",
                            "blr_down",
                            "lost_blr",
                            "new_blr"
                        ],
                        "mandatory": false,
                        "name": "events",
                        "type": "enum_mask"
                    }
                ],
                "version": "V1.5.0"
            },
            "id": "mariadbmon",
            "links": {
                "self": "http://localhost:8989/v1/modules/mariadbmon/"
            },
            "type": "modules"
        },
        {
            "attributes": {
                "api": "protocol",
                "commands": [],
                "description": "The client to MaxScale MySQL protocol implementation",
                "maturity": "GA",
                "module_type": "Protocol",
                "parameters": [
                    {
                        "default_value": "::",
                        "description": "Listener address",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "address",
                        "type": "string"
                    },
                    {
                        "description": "Listener authenticator",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "authenticator",
                        "type": "string"
                    },
                    {
                        "description": "Authenticator options",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "authenticator_options",
                        "type": "string"
                    },
                    {
                        "description": "Path to connection initialization SQL",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "connection_init_sql_file",
                        "type": "path"
                    },
                    {
                        "default_value": 0,
                        "description": "Listener port",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "port",
                        "type": "count"
                    },
                    {
                        "default_value": "MariaDBProtocol",
                        "description": "Listener protocol to use",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "protocol",
                        "type": "module"
                    },
                    {
                        "description": "Service to which the listener connects to",
                        "mandatory": true,
                        "modifiable": false,
                        "name": "service",
                        "type": "service"
                    },
                    {
                        "description": "Listener UNIX socket",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "socket",
                        "type": "string"
                    },
                    {
                        "default_value": "default",
                        "description": "SQL parsing mode",
                        "enum_values": [
                            "default",
                            "oracle"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "sql_mode",
                        "type": "enum"
                    },
                    {
                        "default_value": false,
                        "description": "Enable TLS for server",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl",
                        "type": "bool"
                    },
                    {
                        "description": "TLS certificate authority",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_ca_cert",
                        "type": "path"
                    },
                    {
                        "description": "TLS public certificate",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_cert",
                        "type": "path"
                    },
                    {
                        "default_value": 9,
                        "description": "TLS certificate verification depth",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_cert_verify_depth",
                        "type": "count"
                    },
                    {
                        "description": "TLS cipher list",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_cipher",
                        "type": "string"
                    },
                    {
                        "description": "TLS certificate revocation list",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_crl",
                        "type": "string"
                    },
                    {
                        "description": "TLS private key",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_key",
                        "type": "path"
                    },
                    {
                        "default_value": false,
                        "description": "Verify TLS peer certificate",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_verify_peer_certificate",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Verify TLS peer host",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_verify_peer_host",
                        "type": "bool"
                    },
                    {
                        "default_value": "MAX",
                        "description": "Minimum TLS protocol version",
                        "enum_values": [
                            "MAX",
                            "TLSv10",
                            "TLSv11",
                            "TLSv12",
                            "TLSv13"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "ssl_version",
                        "type": "enum"
                    },
                    {
                        "description": "Path to user and group mapping file",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "user_mapping_file",
                        "type": "path"
                    }
                ],
                "version": "V1.1.0"
            },
            "id": "MariaDBProtocol",
            "links": {
                "self": "http://localhost:8989/v1/modules/MariaDBProtocol/"
            },
            "type": "modules"
        },
        {
            "attributes": {
                "api": "query_classifier",
                "commands": [],
                "description": "Query classifier using sqlite.",
                "maturity": "GA",
                "module_type": "QueryClassifier",
                "parameters": [],
                "version": "V1.0.0"
            },
            "id": "qc_sqlite",
            "links": {
                "self": "http://localhost:8989/v1/modules/qc_sqlite/"
            },
            "type": "modules"
        },
        {
            "attributes": {
                "api": "filter",
                "commands": [
                    {
                        "attributes": {
                            "arg_max": 3,
                            "arg_min": 1,
                            "description": "Show unified log file as a JSON array",
                            "method": "GET",
                            "parameters": [
                                {
                                    "description": "Filter to read logs from",
                                    "required": true,
                                    "type": "FILTER"
                                },
                                {
                                    "description": "Start reading from this line",
                                    "required": false,
                                    "type": "[STRING]"
                                },
                                {
                                    "description": "Stop reading at this line (exclusive)",
                                    "required": false,
                                    "type": "[STRING]"
                                }
                            ]
                        },
                        "id": "log",
                        "links": {
                            "self": "http://localhost:8989/v1/modules/qlafilter/log/"
                        },
                        "type": "module_command"
                    }
                ],
                "description": "A simple query logging filter",
                "maturity": "GA",
                "module_type": "Filter",
                "parameters": [
                    {
                        "default_value": true,
                        "description": "Append new entries to log files instead of overwriting them",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "append",
                        "type": "bool"
                    },
                    {
                        "default_value": "ms",
                        "description": "Duration in milliseconds (ms) or microseconds (us)",
                        "enum_values": [
                            "ms",
                            "milliseconds",
                            "us",
                            "microseconds"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "duration_unit",
                        "type": "enum"
                    },
                    {
                        "description": "Exclude queries matching this pattern from the log",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "exclude",
                        "type": "regex"
                    },
                    {
                        "description": "The basename of the output file",
                        "mandatory": true,
                        "modifiable": true,
                        "name": "filebase",
                        "type": "string"
                    },
                    {
                        "default_value": false,
                        "description": "Flush log files after every write",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "flush",
                        "type": "bool"
                    },
                    {
                        "default_value": "date,user,query",
                        "description": "Type of data to log in the log files",
                        "enum_values": [
                            "service",
                            "session",
                            "date",
                            "user",
                            "query",
                            "reply_time",
                            "total_reply_time",
                            "default_db",
                            "num_rows",
                            "reply_size",
                            "transaction",
                            "transaction_time",
                            "num_warnings",
                            "error_msg"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_data",
                        "type": "enum_mask"
                    },
                    {
                        "default_value": "session",
                        "description": "The type of log file to use",
                        "enum_values": [
                            "session",
                            "unified",
                            "stdout"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_type",
                        "type": "enum_mask"
                    },
                    {
                        "description": "Only log queries matching this pattern",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "match",
                        "type": "regex"
                    },
                    {
                        "default_value": " ",
                        "description": "Value used to replace newlines",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "newline_replacement",
                        "type": "string"
                    },
                    {
                        "default_value": "",
                        "description": "Regular expression options",
                        "enum_values": [
                            "case",
                            "ignorecase",
                            "extended"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "options",
                        "type": "enum_mask"
                    },
                    {
                        "default_value": ",",
                        "description": "Defines the separator between elements of a log entry",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "separator",
                        "type": "string"
                    },
                    {
                        "description": "Log queries only from this network address",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "source",
                        "type": "string"
                    },
                    {
                        "default_value": false,
                        "description": "Write queries in canonical form",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "use_canonical_form",
                        "type": "bool"
                    },
                    {
                        "description": "Log queries only from this user",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "user",
                        "type": "string"
                    }
                ],
                "version": "V1.1.1"
            },
            "id": "qlafilter",
            "links": {
                "self": "http://localhost:8989/v1/modules/qlafilter/"
            },
            "type": "modules"
        },
        {
            "attributes": {
                "api": "router",
                "commands": [],
                "description": "A connection based router to load balance based on connections",
                "maturity": "GA",
                "module_type": "Router",
                "parameters": [
                    {
                        "default_value": true,
                        "description": "Use master for reads",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "master_accept_reads",
                        "type": "bool"
                    },
                    {
                        "default_value": "0ms",
                        "description": "Maximum acceptable replication lag",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "max_replication_lag",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "running",
                        "description": "A comma separated list of server roles",
                        "enum_values": [
                            "master",
                            "slave",
                            "running",
                            "synced"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "router_options",
                        "type": "enum_mask"
                    },
                    {
                        "default_value": false,
                        "description": "Retrieve users from all backend servers instead of only one",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "auth_all_servers",
                        "type": "bool"
                    },
                    {
                        "default_value": "300000ms",
                        "description": "How ofted idle connections are pinged",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "connection_keepalive",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "0ms",
                        "description": "Connection idle timeout",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "connection_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": false,
                        "description": "Disable session command history",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "disable_sescmd_history",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Allow the root user to connect to this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "enable_root_user",
                        "type": "bool"
                    },
                    {
                        "default_value": "-1ms",
                        "description": "Put connections into pool after session has been idle for this long",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "idle_session_pool_time",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": true,
                        "description": "Match localhost to wildcard host",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "localhost_match_wildcard_host",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "description": "Log a warning when client authentication fails",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_auth_warnings",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Log debug messages for this service (debug builds only)",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_debug",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Log info messages for this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_info",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Log notice messages for this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_notice",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Log warning messages for this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_warning",
                        "type": "bool"
                    },
                    {
                        "default_value": 0,
                        "description": "Maximum number of connections",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "max_connections",
                        "type": "count"
                    },
                    {
                        "default_value": 50,
                        "description": "Session command history size",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "max_sescmd_history",
                        "type": "count"
                    },
                    {
                        "default_value": "60000ms",
                        "description": "How long a session can wait for a connection to become available",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "multiplex_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "0ms",
                        "description": "Network write timeout",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "net_write_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "description": "Password for the user used to retrieve database users",
                        "mandatory": true,
                        "modifiable": true,
                        "name": "password",
                        "type": "string"
                    },
                    {
                        "default_value": true,
                        "description": "Prune old session command history if the limit is exceeded",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "prune_sescmd_history",
                        "type": "bool"
                    },
                    {
                        "default_value": "primary",
                        "description": "Service rank",
                        "enum_values": [
                            "primary",
                            "secondary"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "rank",
                        "type": "enum"
                    },
                    {
                        "default_value": -1,
                        "description": "Number of statements kept in memory",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "retain_last_statements",
                        "type": "int"
                    },
                    {
                        "default_value": false,
                        "description": "Enable session tracing for this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "session_trace",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Track session state using server responses",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "session_track_trx_state",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "description": "Strip escape characters from database names",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "strip_db_esc",
                        "type": "bool"
                    },
                    {
                        "description": "Username used to retrieve database users",
                        "mandatory": true,
                        "modifiable": true,
                        "name": "user",
                        "type": "string"
                    },
                    {
                        "description": "Load additional users from a file",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "user_accounts_file",
                        "type": "path"
                    },
                    {
                        "default_value": "add_when_load_ok",
                        "description": "When and how the user accounts file is used",
                        "enum_values": [
                            "add_when_load_ok",
                            "file_only_always"
                        ],
                        "mandatory": false,
                        "modifiable": false,
                        "name": "user_accounts_file_usage",
                        "type": "enum"
                    },
                    {
                        "description": "Custom version string to use",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "version_string",
                        "type": "string"
                    }
                ],
                "version": "V2.0.0"
            },
            "id": "readconnroute",
            "links": {
                "self": "http://localhost:8989/v1/modules/readconnroute/"
            },
            "type": "modules"
        },
        {
            "attributes": {
                "api": "router",
                "commands": [],
                "description": "A Read/Write splitting router for enhancement read scalability",
                "maturity": "GA",
                "module_type": "Router",
                "parameters": [
                    {
                        "default_value": "false",
                        "description": "Causal reads mode",
                        "enum_values": [
                            "false",
                            "off",
                            "0",
                            "true",
                            "on",
                            "1",
                            "none",
                            "local",
                            "global",
                            "fast"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "causal_reads",
                        "type": "enum"
                    },
                    {
                        "default_value": "10000ms",
                        "description": "Timeout for the slave synchronization",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "causal_reads_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": false,
                        "description": "Retry failed writes outside of transactions",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "delayed_retry",
                        "type": "bool"
                    },
                    {
                        "default_value": "10000ms",
                        "description": "Timeout for delayed_retry",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "delayed_retry_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": false,
                        "description": "Create connections only when needed",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "lazy_connect",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Use master for reads",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "master_accept_reads",
                        "type": "bool"
                    },
                    {
                        "default_value": "fail_instantly",
                        "description": "Master failure mode behavior",
                        "enum_values": [
                            "fail_instantly",
                            "fail_on_write",
                            "error_on_write"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "master_failure_mode",
                        "type": "enum"
                    },
                    {
                        "default_value": false,
                        "description": "Reconnect to master",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "master_reconnection",
                        "type": "bool"
                    },
                    {
                        "default_value": 255,
                        "description": "Maximum number of slave connections",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "max_slave_connections",
                        "type": "count"
                    },
                    {
                        "default_value": "0ms",
                        "description": "Maximum allowed slave replication lag",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "max_slave_replication_lag",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": false,
                        "description": "Optimistically offload transactions to slaves",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "optimistic_trx",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "description": "Automatically retry failed reads outside of transactions",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "retry_failed_reads",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Reuse identical prepared statements inside the same connection",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "reuse_prepared_statements",
                        "type": "bool"
                    },
                    {
                        "default_value": 255,
                        "description": "Starting number of slave connections",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "slave_connections",
                        "type": "count"
                    },
                    {
                        "default_value": "LEAST_CURRENT_OPERATIONS",
                        "description": "Slave selection criteria",
                        "enum_values": [
                            "LEAST_GLOBAL_CONNECTIONS",
                            "LEAST_ROUTER_CONNECTIONS",
                            "LEAST_BEHIND_MASTER",
                            "LEAST_CURRENT_OPERATIONS",
                            "ADAPTIVE_ROUTING"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "slave_selection_criteria",
                        "type": "enum"
                    },
                    {
                        "default_value": false,
                        "description": "Lock connection to master after multi-statement query",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "strict_multi_stmt",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Lock connection to master after a stored procedure is executed",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "strict_sp_calls",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Retry failed transactions",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "transaction_replay",
                        "type": "bool"
                    },
                    {
                        "default_value": 5,
                        "description": "Maximum number of times to retry a transaction",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "transaction_replay_attempts",
                        "type": "count"
                    },
                    {
                        "default_value": "full",
                        "description": "Type of checksum to calculate for results",
                        "enum_values": [
                            "full",
                            "result_only",
                            "no_insert_id"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "transaction_replay_checksum",
                        "type": "enum"
                    },
                    {
                        "default_value": 1048576,
                        "description": "Maximum size of transaction to retry",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "transaction_replay_max_size",
                        "type": "size"
                    },
                    {
                        "default_value": false,
                        "description": "Retry transaction on deadlock",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "transaction_replay_retry_on_deadlock",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Retry transaction on checksum mismatch",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "transaction_replay_retry_on_mismatch",
                        "type": "bool"
                    },
                    {
                        "default_value": "0ms",
                        "description": "Timeout for transaction replay",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "transaction_replay_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "all",
                        "description": "Whether to route SQL variable modifications to all servers or only to the master",
                        "enum_values": [
                            "all",
                            "master"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "use_sql_variables_in",
                        "type": "enum"
                    },
                    {
                        "default_value": false,
                        "description": "Retrieve users from all backend servers instead of only one",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "auth_all_servers",
                        "type": "bool"
                    },
                    {
                        "default_value": "300000ms",
                        "description": "How ofted idle connections are pinged",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "connection_keepalive",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "0ms",
                        "description": "Connection idle timeout",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "connection_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": false,
                        "description": "Disable session command history",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "disable_sescmd_history",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Allow the root user to connect to this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "enable_root_user",
                        "type": "bool"
                    },
                    {
                        "default_value": "-1ms",
                        "description": "Put connections into pool after session has been idle for this long",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "idle_session_pool_time",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": true,
                        "description": "Match localhost to wildcard host",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "localhost_match_wildcard_host",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "description": "Log a warning when client authentication fails",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_auth_warnings",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Log debug messages for this service (debug builds only)",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_debug",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Log info messages for this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_info",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Log notice messages for this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_notice",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Log warning messages for this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "log_warning",
                        "type": "bool"
                    },
                    {
                        "default_value": 0,
                        "description": "Maximum number of connections",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "max_connections",
                        "type": "count"
                    },
                    {
                        "default_value": 50,
                        "description": "Session command history size",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "max_sescmd_history",
                        "type": "count"
                    },
                    {
                        "default_value": "60000ms",
                        "description": "How long a session can wait for a connection to become available",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "multiplex_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "default_value": "0ms",
                        "description": "Network write timeout",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "net_write_timeout",
                        "type": "duration",
                        "unit": "ms"
                    },
                    {
                        "description": "Password for the user used to retrieve database users",
                        "mandatory": true,
                        "modifiable": true,
                        "name": "password",
                        "type": "string"
                    },
                    {
                        "default_value": true,
                        "description": "Prune old session command history if the limit is exceeded",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "prune_sescmd_history",
                        "type": "bool"
                    },
                    {
                        "default_value": "primary",
                        "description": "Service rank",
                        "enum_values": [
                            "primary",
                            "secondary"
                        ],
                        "mandatory": false,
                        "modifiable": true,
                        "name": "rank",
                        "type": "enum"
                    },
                    {
                        "default_value": -1,
                        "description": "Number of statements kept in memory",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "retain_last_statements",
                        "type": "int"
                    },
                    {
                        "default_value": false,
                        "description": "Enable session tracing for this service",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "session_trace",
                        "type": "bool"
                    },
                    {
                        "default_value": false,
                        "description": "Track session state using server responses",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "session_track_trx_state",
                        "type": "bool"
                    },
                    {
                        "default_value": true,
                        "description": "Strip escape characters from database names",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "strip_db_esc",
                        "type": "bool"
                    },
                    {
                        "description": "Username used to retrieve database users",
                        "mandatory": true,
                        "modifiable": true,
                        "name": "user",
                        "type": "string"
                    },
                    {
                        "description": "Load additional users from a file",
                        "mandatory": false,
                        "modifiable": false,
                        "name": "user_accounts_file",
                        "type": "path"
                    },
                    {
                        "default_value": "add_when_load_ok",
                        "description": "When and how the user accounts file is used",
                        "enum_values": [
                            "add_when_load_ok",
                            "file_only_always"
                        ],
                        "mandatory": false,
                        "modifiable": false,
                        "name": "user_accounts_file_usage",
                        "type": "enum"
                    },
                    {
                        "description": "Custom version string to use",
                        "mandatory": false,
                        "modifiable": true,
                        "name": "version_string",
                        "type": "string"
                    }
                ],
                "version": "V1.1.0"
            },
            "id": "readwritesplit",
            "links": {
                "self": "http://localhost:8989/v1/modules/readwritesplit/"
            },
            "type": "modules"
        }
    ],
    "links": {
        "self": "http://localhost:8989/v1/maxscale/modules/"
    }
}

MariaDB MaxScale 21.06 REST API

MaxScale 21.06 Admin User Resource

hashtagResource Operations

hashtagGet network user

hashtagGet all network users

hashtagGet enabled UNIX account

hashtagGet all enabled UNIX accounts

hashtagGet all users

hashtagCreate a network user

hashtagEnable a UNIX account

hashtagDelete a network user

hashtagDisable a UNIX account

hashtagUpdate a network user

MaxScale 21.06 Filter Resource

MaxScale 21.06 Listener Resource

hashtagResource Operations

hashtagGet a listener

hashtagGet all listeners

hashtagCreate a new listener

hashtagUpdate a listener

hashtagDestroy a listener

hashtagStop a listener

hashtagStart a listener

MaxScale 21.06 Monitor Resource

hashtagResource Operations

hashtagGet a monitor

hashtagGet all monitors

hashtagCreate a monitor

hashtagUpdate a monitor

hashtagModifiable Fields

hashtagUpdate monitor relationships

hashtagDestroy a monitor

hashtagStop a monitor

hashtagStart a monitor

MaxScale 21.06 Session Resource

hashtagResource Operations

hashtagGet a session

hashtagGet all sessions

hashtagUpdate a Session

MaxScale 21.06 Listener Resource

hashtagResource Operations

hashtagGet a listener

hashtagGet all listeners

hashtagCreate a new listener

hashtagUpdate a listener

hashtagDestroy a listener

hashtagStop a listener

hashtagStart a listener

MariaDB MaxScale 21.06 REST API

MaxScale 21.06 Monitor Resource

hashtagResource Operations

hashtagGet a monitor

hashtagGet all monitors

hashtagCreate a monitor

hashtagUpdate a monitor

hashtagModifiable Fields

hashtagUpdate monitor relationships

hashtagDestroy a monitor

hashtagStop a monitor

hashtagStart a monitor

MaxScale 21.06 Admin User Resource

hashtagResource Operations

hashtagGet network user

hashtagGet all network users

hashtagGet enabled UNIX account

hashtagGet all enabled UNIX accounts

hashtagGet all users

hashtagCreate a network user

hashtagEnable a UNIX account

hashtagDelete a network user

hashtagDisable a UNIX account

hashtagUpdate a network user

MaxScale 21.06 Session Resource

hashtagResource Operations

hashtagGet a session

hashtagGet all sessions

hashtagUpdate a Session

MaxScale 21.06 Filter Resource

hashtagResource Operations

hashtagGet a filter

Resource Operations

Get network user

Get all network users

Get enabled UNIX account

Get all enabled UNIX accounts

Get all users

Create a network user

Enable a UNIX account

Delete a network user

Disable a UNIX account

Update a network user

Resource Operations

Get a listener

Get all listeners

Create a new listener

Update a listener

Destroy a listener

Stop a listener

Start a listener

Resource Operations

Get a monitor

Get all monitors

Create a monitor

Update a monitor

Modifiable Fields

Update monitor relationships

Destroy a monitor

Stop a monitor

Start a monitor

Resource Operations

Get a session

Get all sessions

Update a Session

Resource Operations

Get a listener

Get all listeners

Create a new listener

Update a listener

Destroy a listener

Stop a listener

Start a listener

Resource Operations

Get a monitor

Get all monitors

Create a monitor

Update a monitor

Modifiable Fields

Update monitor relationships

Destroy a monitor

Stop a monitor

Start a monitor

Resource Operations

Get network user

Get all network users

Get enabled UNIX account

Get all enabled UNIX accounts

Get all users

Create a network user

Enable a UNIX account

Delete a network user

Disable a UNIX account

Update a network user

Resource Operations

Get a session

Get all sessions

Update a Session

Resource Operations

Get a filter

Get all filters

Create a filter

Update a filter

Destroy a filter

SQL Connection Interface

Request Parameters

Get one SQL connection

Get all SQL connections

Open SQL connection to server

Close an opened SQL connection

Reconnect an opened SQL connection

Execute SQL query