Release Notes for MariaDB MaxScale 2.5.0
MariaDB MaxScale 2.5.0 was released on 2020-06-18. This release is of Beta maturity, and should not be used with production workloads.
MaxGUI added, a browser-based configuration and management tool for MaxScale, based on MaxCtrl.
Cache supports cache entry invalidation.
Cache supports memcached and Redis storage modules, which allow sharing caches between MaxScale instances.
Cache supports user-specific caching.
Support added for Mirror Router.
Support added for KafkaCDC module to replicate changes from the Primary Server to a Kafka broker formatted as JSON objects.
MaxScale can perform load re-balancing, moving sessions from one thread to another so that all threads are evenly utilized.
ColumnStore monitor capable of monitoring MariaDB ColumnStore 1.0, 1.2, and 1.5. Able to perform some cluster management operations on ColumnStore 1.5.
MaxCtrl --timeout option can be specified using duration suffixes.
targetsparameter added to services.
MariaDB connection attributes forwarded to back-end Servers.
MariaDB Monitor supports cooperative monitoring.
Listener configuration support the use of multiple authenticators.
Support added for connection_init_sql_file parameter.
The PAM Authenticator supports the
mysql_clear_passwordclient authentication plugin.
Support added for peer hostname verification in TLS connections.
Support added for certificate revocation lists on TLS connections.
Read/Write Splitter causal reads supports a global mode, which uses the latest known Global Transaction ID and waits for a Replica Server to replicate.
Read/Write Splitter causal reads supports a fast mode, which uses the latest known Global Transaction ID and routes queries to the Primary Server if no up-to-date Replica is found.
Schema Router supports configuration of multiple servers that contain the same database or table.
Schema Router no longer requires that client credentials exist on all Servers used by the service.
REST API supports token authentication via JWT.
REST API supports sparse field-sets to reduce network overhead for requests.
REST API supports result filtering to retrieve a subset of a resource collection.
REST API resources use SHA1 of returned result as the object ETag.
REST API module parameter types described for the server and core MaxScale objects.
REST API separates listener resources from services.
Network throttling enabled by default.
Server configuration is evaluated for unknown parameters, raising a configuration error.
Servers without monitors start in the
Downstate instead of the
Runningstate, requiring you to manually set their state..
Read/Write Splitter connection_keepalive parameter is a core MaxScale feature, available to all routers.
Default for auth_connect_timeout parameter changed from 3 to 10 seconds.
MariaDB Monitor no longer permits setting the Primary Server to maintenance or draining mode. You must perform a switchover first.
Password encryption updated to be more secure. Recommended that users generate a new encryption key and re-encrypt their passwords using MaxKeys and MaxPasswd.
Updates to authentication modules.
REST API treats listeners as separate resources from services. Previous listener entry point is deprecated and its use discouraged.
Deprecated utility MaxAdmin removed. No longer possible to enable/disable Unix users as MaxScale administrators.
MaxInfo Router removed.
httpd protocol removed.
The auth_read_timeout parameter deprecated and ignored.
The auth_write_timeout parameter deprecated and ignored.
MariaDB Monitor detect_stale_master deprecated, but still usable. Will be removed in later release.
MariaDB Monitor detect_standalone_master deprecated, but still usable. Will be removed in later release.
MariaDB Monitor detect_stale_slave deprecated, but still usable. Will be removed in later release.
Deprecated poll_sleep parameter removed.
Deprecated log_trace parameter removed.
Deprecated log_messages parameter removed.
Server protocol parameter deprecated and ignored.
Server authenticator parameter deprecated and ignored.
Read/Write Splitter max_slave_connections parameter deprecated.