MaxScale 21.06.21 Release Notes

Release 21.06.21 is a GA release. It was released on 2025-09-08.

This document describes the changes in release 21.06.21, when compared to the previous release in the same series.

If you are upgrading from an older major version of MaxScale, please see Upgrading MaxScale.

For any problems you encounter, please consider submitting a bug report on our Jira.

New Features

• MXS-5606 Add MAXSCALE_USER and MAXSCALE_PASSWORD environment variables

Bug fixes

• MXS-5920 MaxCtrl/REST-API should tell if password encryption is enabled

• MXS-5915 MaxScale 24.02.6 is not compatible with MariaDB 12.0.2: Monitor fails with 'Cannot convert field ON to boolean'

• MXS-5911 Upgrade Connector/C to 3.3.16 and 3.4.6

• MXS-5897 Failing COM_STMT_PREPAREs that don't generate an ID aren't discarded from the history

• MXS-5865 Run-time modification of users_refresh_time and users_refresh_interval are not immediately taken into use

• MXS-5769 Watchdog timeout diagnostics are not detailed enough

• MXS-5760 Authentication failure on all backends does not immediately close sessions

• MXS-5733 MaxScale allows unlimited COM_CHANGE_USER attempts

• MXS-5703 List of read-only builtin functions is out-of-date

• MXS-5685 REST-API documentation for GET versions of relationship endpoints is missing

• MXS-5673 Config sync does not mark resources as modified

• MXS-5653 MaxScale 24.02.6 GUI does not reflect parameter changes from Configuration Synchronization

• MXS-5641 Confusing log message when the wrong connection holds on to the master server lock

• MXS-5635 The variable disk_space_threshold should be dynamic for Servers

• MXS-5559 maxctrl does not obfuscate password in ps output

Known Issues and Limitations

There are some limitations and known issues within this version of MaxScale. For more information, please refer to the Limitations guide.

Packaging

RPM and Debian packages are provided for the supported Linux distributions.

Packages can be downloaded here.

Source Code

The source code of MaxScale is tagged at GitHub with a tag, which is identical with the version of MaxScale. For instance, the tag of version X.Y.Z of MaxScale is maxscale-X.Y.Z. Further, the default branch is always the latest GA version of MaxScale.

The source code is available here.