Release Notes for MariaDB MaxScale 2.4.0¶
MariaDB MaxScale is an advanced database proxy, firewall, and query router. MaxScale is a component of MariaDB Platform.
MariaDB MaxScale 2.4.0 was released on 2019-06-29. It is a beta release.
Support added for the Clustrix monitor.
Support added for the Smart Router.
Support added to MaxCtrl for draining servers.
Support added for
socketparameter, allowing MaxScale to use UNIX domain sockets for server modules.
Support added for
clusterparameter for services.
Support added for suffixes
msfor specifying duration in configuration files.
Query Classifier Cache can now be examined through MaxCtrl or the REST API.
Support added for throttling connection attempts.
Default version for REST API and MaxCtrl is optional. Defaults to
Support added to REST API and MaxCtrl for
set servercommand. Closes all connections to given server when it's set in maintenance mode.
Support added for command history to MaxCtrl.
alternow supports multiple key-value pairs in one command.
Read/Write Splitter now applies transaction replays in conjunction with server initiated transaction rollbacks.
transaction_replay_attemptsparameter, to set the number of errors can occur before the Read/Write Splitter ceases replay attempts.
lazy_connectparameter, delaying the opening of all connections for the Read/Write Splitter until they're needed.
New connections created by Read/Write Splitter at start of session are now always used in connection counts.
Read/Write Splitter now load balances connections to Primary Server in cases where there are multiple Primary Servers.
Read/Write Splitter now allows open transactions to finish if the Primary Server is put in maintenance mode.
Galera Monitor now correctly assigns Replica status when the Replica Server treats a Cluster Node as its Primary Server.
Cluster Nodes now display their Global Transaction ID positions in MaxCtrl
Avro Router now supports direct replication.
MariaDB Monitor now supports
MaxScale fails to start if section or object names begin with
@@, this is now reserved for MaxScale itself.
MaxScale fails to start if section or object names contain whitespace (deprecated in 2.2).
Support added for
SO_REUSEPORTcapability offered by Linux kernel 3.9+. Allows multiple MaxScale instances running on the same server to bind on the same listener port.
MaxScale now stores user passwords as SHA2-512 hashes. New users use the stronger algorithm. Existing users continue to use MD5 hashes. Recreate the user to upgrade.
REST API now requires the
protocolparameter when creating a server module.
Encrypting connections to the server requires that you define the TLS parameters when creating a server module.
weightbyoption for server modules replaced by the
MaxAdmin no longer supports enabling TLS at runtime. Use MaxCtrl to create servers with TLS configuration.
allow_cluster_recoveryoptions from the
mqfilterfilter. It will be removed in a future release.
Removed example scripts and configuration files for Nagios.
Fixes REST API allowing
POSTrequests without body for basic users. (MXS-2825)
PATCHwith invalid credentials returning no results. (MXS-2575)
list servercommand failing when servers are on UNIX sockets. (MXS-2565)
Fixes inefficient loading of users. (MXS-2558)
Fixes querying of database users through MaxCtrl. (MXS-2493)
Fixes raising of
FATALwhen running multiple parallel inserts on Clustrix nodes with Read/Write Splitter. (MXS-2487)
ignore_databaseoption documentation for Schema Router. (MXS-2477)
Fixes manual cancellation of outstanding delay calls when nodes change. (MXS-2468)
Fixes stale information showing in MaxCtrl on changing bootstrap nodes. (MXS-2463)
-venumbers showing with Clustrix in MaxCtrl
list serversoutput. (MXS-2448)
Fixes error when attempting to run MaxCtrl. (MXS-2447)
USEcommand causing signal 11 with TPM Filter. (MXS-2385)
Fixes segmentation fault with develop on
prepared_statementtest from 2.2 branch. (MXS-2341)
SO_RCVBUFbeing hard coded. (MXS-2312)
Fixes issue where only one parameter can be altered at a time. (MXS-2307)
Fixes no error being raised when monitor fails to start after being created via REST API. (MXS-2306)
Fixes multiple comments in query stopping hints from working. (MXS-2302)
Fixes Hunt Filter accepting invalid comment syntax. (MXS-2289)
Fixes queries with brackets being classified as unknown. (MXS-2210)
Fixes missing tarball installation steps in documentation. (MXS-2198)
Fixes mysql CLIshell. (MXS-2172)
Fixes MaxScale failing to start when PID file exists and points to same process. (MXS-2170)
Fixes Server losing stale replica status when MaxScale restarts. (MXS-1966)