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MaxScale/Documentation/Changelog.md
Johan Wikman 0a83e64a9c 2.4.19 Add release notes and update change log
2022-01-04 15:52:03 +02:00

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Changelog

MariaDB MaxScale 2.4

  • A Clustrix specific monitor has been added.
  • A new router, Smart Router, capable of routing a query to different backends depending on the characteristics of the query has been added.
  • Transaction replaying is now performed also in conjunction with server initiated transaction rollbacks.
  • Names starting with @@ are reserved for use by MaxScale.
  • Names can no longer contain whitespace.
  • Servers can now be drained.
  • The servers of a service can now be defined using a monitor.
  • Durations can now be specified as hours, minutes, seconds or milliseconds.
  • MaxCtrl commands list sessions, show sessions and show session <id> support reverse DNS lookup of client addresses. The conversion is activated by adding the --rdns-option to the command.
  • The following MariaDB-Monitor settings have been removed and cause a startup error if defined: mysql51_replication, multimaster and allow_cluster_recovery. The setting detect_replication_lag is deprecated and ignored.
  • enforce_simple_topology-setting added to MariaDB-Monitor.
  • The mqfilter has been deprecated.

For more details, please refer to:

MariaDB MaxScale 2.3

  • Runtime Configuration of the Cache
  • User Specified Syslog Facility and Level for Authentication Errors
  • config reload removed from MaxAdmin (was deprecated in 2.2)
  • MariaDBMonitor features added, modified and removed
  • A Comment filter has been added.
  • Services and filters can be created at runtime via the REST API
  • Runtime router reconfiguration is now possible
  • New Throttle filter that replaces and extends on the limit_queries functionality
  • MaxCtrl
    • The create monitor command now accepts a list of key-value parameters
    • The new drain server drains the server of connections
    • A new interactive input mode was added
  • Readwritesplit
    • Automatic transaction replay allows transactions to be migrated between servers
    • Master connections can now be re-opened
    • Writes with autocommit enabled can be automatically retried
    • Consistent reads on slaves via MASTER_GTID_WAIT
    • Transaction load balancing for normal transactions
    • Support for runtime router reconfiguration
    • A new load balancing method: ADAPTIVE_ROUTING
  • Experimental resultset concatenation router, cat
  • The schema router is now capable of table family sharding.
  • The binlog router can now automatically switch to secondary masters when replicating from a Galera cluster in case the primary master goes down.
  • MaxScale now has a systemd compatible watchdog.
  • Server setting authenticator_options is no longer used and any value is ignored.

For more details, please refer to:

MariaDB MaxScale 2.2

  • Limited support from Pluggable Authentication Modules (PAM).
  • Proxy protocol support for backend connections.
  • REST-API for obtaining information about and for manipulating the resources of MaxScale.
  • MaxCtrl, a new command line client for administering MaxScale implemented in terms of the REST-API.
  • Firewall can now prevent the use of functions in conjunction with certain columns.
  • Parser of MaxScale extended to support window functions and CTEs.
  • Parser of MaxScale extended to support PL/SQL compatibility features of upcoming 10.3 release.
  • Prepared statements are now parsed and the execution of read only ones will be routed to slaves.
  • Server states are persisted, so in case of crash and restart MaxScale has the correct server state quicker.
  • Monitor scripts are executed synchronously, so they can safely perform actions that change the server states.
  • The Masking filter can now both obfuscate and partially mask columns.
  • Binlog router supports MariaDB 10 GTID at both ends.
  • KILL CONNECTION can now be used through MaxScale.
  • Environment variables can now be used in the MaxScale configuration file.
  • By default, MaxScale can no longer be run as root.
  • The MySQL Monitor is now capable of performing failover and switchover of the master. There is also limited capability for rejoining nodes.

For more details, please refer to:

MariaDB MaxScale 2.1

  • MariaDB MaxScale is licensed under MariaDB BSL 1.1.
  • Hierarchical configuration files are now supported.
  • Logging is now performed in a way compatible with logrotate(8).
  • Persistent connections are reset upon reuse.
  • Galera monitor now consistently chooses the same node as master.
  • Galera Monitor can set the preferred donor nodes list.
  • The configuration can now be altered dynamically and the changes are persisted.
  • There is now a monitor for Amazon Aurora clusters.
  • MySQL Monitor now has a multi-master mode.
  • MySQL Monitor now has a failover mode.
  • Named Server Filter now supports wildcards for source option.
  • Binlog Server can now be configured to encrypt binlog files.
  • New filters, cache, ccrfilter, insertstream, masking, and maxrows are introduced.
  • GSSAPI based authentication can be used
  • Prepared statements are now in the database firewall filtered exactly like non-prepared statements.
  • The firewall filter can now filter based on function usage.
  • MaxScale now supports IPv6

For more details, please refer to:

MariaDB MaxScale 2.0

  • MariaDB MaxScale is licensed under MariaDB BSL.
  • SSL can be used in the communication between MariaDB MaxScale and the backend servers.
  • The number of allowed connections can explicitly be throttled.
  • MariaDB MaxScale can continue serving read request even if the master has gone down.
  • The security of MaxAdmin has been improved; Unix domain sockets can be used in the communication with MariaDB MaxScale and the Linux identity can be used for authorization.
  • MariaDB MaxScale can in real time make binlog events available as raw AVRO or as JSON objects (beta level functionality).

For more details, please refer to:

MariaDB MaxScale 1.4

  • Authentication now allows table level resolution of grants. MaxScale service users will now need SELECT privileges on mysql.tables_priv to be able to authenticate users at the database and table level.
  • Firewall filter allows whitelisting.
  • Client side SSL works.

For more details, please refer to

MariaDB MaxScale 1.3

  • Added support for persistent backend connections
  • The binlog server is now an integral component of MariaDB MaxScale.
  • The logging has been changed; instead of different log files there is one log file and different message priorities.

For more details, please refer to MariaDB MaxScale 1.3 Release Notes

MariaDB MaxScale 1.2

  • Logfiles have been renamed. The log names are now named error.log, messages.log, trace.log and debug.log.

MariaDB MaxScale 1.1.1

  • Schemarouter now also allows for an upper limit to session commands.
  • Schemarouter correctly handles SHOW DATABASES responses that span multiple buffers.
  • Readwritesplit and Schemarouter now allow disabling of the session command history.

MariaDB MaxScale 1.1

NOTE: MariaDB MaxScale default installation directory has changed to /usr/local/mariadb-maxscale and the default password for MaxAdmin is now ´mariadb´.

  • New modules added * Binlog router * Firewall filter * Multi-Master monitor * RabbitMQ logging filter * Schema Sharding router
  • Added option to use high precision timestamps in logging.
  • Readwritesplit router now returns the master server's response.
  • New readwritesplit router option added. It is now possible to control the amount of memory readwritesplit sessions will consume by limiting the amount of session modifying statements they can execute.
  • Minimum required CMake version is now 2.8.12 for package building.
  • Session idle timeout added for services. More details can be found in the configuration guide.
  • Monitor API is updated to 2.0.0. Monitors with earlier versions of the API no longer work with this version of MariaDB MaxScale.
  • MariaDB MaxScale now requires libcurl and libcurl development headers.
  • Nagios plugins added.
  • Notification service added.
  • Readconnrouter has a new "running" router_option. This allows it to use any running server as a valid backend server.
  • Database names can be stripped of escape characters with the strip_db_esc service parameter.