Release Notes for MariaDB MaxScale 6.4.0


MariaDB MaxScale is an advanced database proxy, firewall, and query router.

MariaDB MaxScale 6.4.0 was released on 2022-06-09. This release is of General Availability (GA) maturity.

Issues Fixed

Can Result in a Hang or Crash

  • When Binlog Router (binlogrouter) is used, a race condition can cause MaxScale to crash. (MXS-4138)

  • If the MaxScale node is disconnected from the Redis server when the Cache Filter (cache) is used, established connections can hang after executing a query that requires MaxScale to access the cache. (MXS-4105)

  • When the connection_keepalive parameter is 0, a memory leak can cause MaxScale to crash. (MXS-4100)

Can Result in Unexpected Behavior

Install and Upgrade

  • When the MaxScale package is installed, the /etc/maxscale.cnf.d/ directory is not automatically created. (MXS-4134)


In alignment to the MariaDB Corporation Engineering Policy, MariaDB MaxScale 6.4.0 is provided for:

  • CentOS 7 (x86_64)

  • Debian 9 (x86_64, ARM64)

  • Debian 10 (x86_64, ARM64)

  • Debian 11 (x86_64, ARM64)

  • Red Hat Enterprise Linux 7 (x86_64)

  • Red Hat Enterprise Linux 8 (x86_64, ARM64)

  • Rocky Linux 8 (x86_64, ARM64)

  • SUSE Linux Enterprise Server 15 (x86_64, ARM64)

  • Ubuntu 18.04 (x86_64, ARM64)

  • Ubuntu 20.04 (x86_64, ARM64)