Galera 26.4.27 Release Notes

Release Date: 2026-05-12

MariaDB is pleased to announce the release of Galera Replication library 4.27, implementing wsrep API version 26.

The library is available as targeted packages and package repositories for a number of Linux distributions, including Debian 11 (Bullseye), and 12 (Bookworm), 22.04 LTS (Jammy), and 24.04 LTS (Noble), RHEL 8, and 9. Obtaining packages using a package repository removes the need to download individual files and facilitates the deployment and upgrade of Galera nodes.

This and future releases will be available from https://mariadb.com/galera-downloads/

Notable changes

• Fixed issue where write set buffers were released too early causing failure on IST with message "IST didn't contain all write sets, expected last : last received: ".

Known Issues

• In order to install Galera package on RHEL 8, MySQL and MariaDB modules need to be disabled first with dnf -y module disable mysql mariadb.

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