The Ultimate Guide to High Availability with MariaDB

What is MariaDB Galera Cluster?

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Contents

  1. About
  2. Features
  3. Benefits
  4. Galera Versions
    1. Galera 4 Versions
    2. Galera 3 Versions
  5. See Also

About

galera_small

MariaDB Galera Cluster is a virtually synchronous multi-primary cluster for MariaDB. It is available on Linux only, and only supports the InnoDB storage engine (although there is experimental support for MyISAM and, from MariaDB 10.6, Aria. See the wsrep_replicate_myisam system variable, or, from MariaDB 10.6, the wsrep_mode system variable).

Features

  • Virtually synchronous replication
  • Active-active multi-primary topology
  • Read and write to any cluster node
  • Automatic membership control, failed nodes drop from the cluster
  • Automatic node joining
  • True parallel replication, on row level
  • Direct client connections, native MariaDB look & feel

Benefits

The above features yield several benefits for a DBMS clustering solution, including:

  • No replica lag
  • No lost transactions
  • Read scalability
  • Smaller client latencies

The Getting Started with MariaDB Galera Cluster page has instructions on how to get up and running with MariaDB Galera Cluster.

A great resource for Galera users is Codership on Google Groups (codership-team 'at' googlegroups (dot) com) - If you use Galera it is recommended you subscribe.

Galera Versions

MariaDB Galera Cluster is powered by:

The functionality of MariaDB Galera Cluster can be obtained by installing the standard MariaDB Server packages and the Galera wsrep provider library package. The following Galera version corresponds to each MariaDB Server version:

See Deciphering Galera Version Numbers for more information about how to interpret these version numbers.

Galera 4 Versions

The following table lists each version of the Galera 4 wsrep provider, and it lists which version of MariaDB each one was first released in. If you would like to install Galera 4 using yum, apt, or zypper, then the package is called galera-4.

Galera VersionReleased in MariaDB Version
26.4.2011.7.1, 11.6.2, 11.4.4, 11.2.6, 10.11.10, 10.6.20, 10.5.27
26.4.1911.4.3, 11.2.5, 11.1.6, 10.11.9, 10.6.19, 10.5.26
26.4.1811.2.4, 11.1.5, 11.0.6, 10.11.8, 10.6.18, 10.5.25, 10.4.34
26.4.1611.2.2, 11.1.3, 11.0.4, 10.11.6, 10.10.7, 10.6.16, 10.5.23, 10.4.32
26.4.1410.10.3, 10.9.5, 10.8.7, 10.7.8, 10.6.12, 10.5.19, 10.4.28
26.4.1310.10.2, 10.9.4, 10.8.6, 10.7.7, 10.6.11, 10.5.18, 10.4.27
26.4.1210.10.1, 10.9.2, 10.8.4, 10.7.5, 10.6.9, 10.5.17, 10.4.26
26.4.1110.8.1, 10.7.2, 10.6.6, 10.5.14, 10.4.22
26.4.910.6.4, 10.5.12, 10.4.21
26.4.810.6.1, 10.5.10, 10.4.19
26.4.710.5.9, 10.4.18
26.4.610.5.7, 10.4.16
26.4.510.5.4, 10.4.14
26.4.410.5.1, 10.4.13
26.4.310.5.0, 10.4.9
26.4.210.4.4
26.4.110.4.3
26.4.010.4.2

Galera 3 Versions

The following table lists each version of the Galera 3 wsrep provider, and it lists which version of MariaDB each one was first released in. If you would like to install Galera 3 using yum, apt, or zypper, then the package is called galera.

Galera VersionReleased in MariaDB Version
25.3.37MariaDB 10.3.36
25.3.35MariaDB 10.3.33, MariaDB 10.2.42
25.3.34MariaDB 10.3.31, MariaDB 10.2.40
25.3.33MariaDB 10.3.29, MariaDB 10.2.38
25.3.32MariaDB 10.3.28, MariaDB 10.2.37
25.3.31MariaDB 10.3.26, MariaDB 10.2.35, MariaDB 10.1.48
25.3.30MariaDB 10.3.25, MariaDB 10.2.34, MariaDB 10.1.47
25.3.29MariaDB 10.3.23, MariaDB 10.2.32, MariaDB 10.1.45
25.3.28MariaDB 10.3.19, MariaDB 10.2.28, MariaDB 10.1.42
25.3.27MariaDB 10.3.18, MariaDB 10.2.27
25.3.26MariaDB 10.3.14, MariaDB 10.2.23, MariaDB 10.1.39
25.3.25MariaDB 10.3.12, MariaDB 10.2.20, MariaDB 10.1.38, MariaDB Galera Cluster 10.0.38, MariaDB Galera Cluster 5.5.63
25.3.24MariaDB 10.4.0, MariaDB 10.3.10, MariaDB 10.2.18, MariaDB 10.1.37, MariaDB Galera Cluster 10.0.37, MariaDB Galera Cluster 5.5.62
25.3.23MariaDB 10.3.5, MariaDB 10.2.13, MariaDB 10.1.32, MariaDB Galera Cluster 10.0.35, MariaDB Galera Cluster 5.5.60
25.3.22MariaDB 10.3.3, MariaDB 10.2.11, MariaDB 10.1.29, MariaDB Galera Cluster 10.0.33, MariaDB Galera Cluster 5.5.59
25.3.21N/A
25.3.20MariaDB 10.3.1, MariaDB 10.2.6, MariaDB 10.1.23, MariaDB Galera Cluster 10.0.31, MariaDB Galera Cluster 5.5.56
25.3.19MariaDB 10.3.0, MariaDB 10.2.3, MariaDB 10.1.20, MariaDB Galera Cluster 10.0.29, MariaDB Galera Cluster 5.5.54
25.3.18MariaDB 10.2.2, MariaDB 10.1.18, MariaDB Galera Cluster 10.0.28, MariaDB Galera Cluster 5.5.53
25.3.17MariaDB 10.1.17, MariaDB Galera Cluster 10.0.27, MariaDB Galera Cluster 5.5.51
25.3.16N/A
25.3.15MariaDB 10.2.0, MariaDB 10.1.13, MariaDB Galera Cluster 10.0.25, MariaDB Galera Cluster 5.5.49
25.3.14MariaDB 10.1.12, MariaDB Galera Cluster 10.0.24, MariaDB Galera Cluster 5.5.48
25.3.12MariaDB 10.1.11
25.3.11N/A
25.3.10N/A
25.3.9MariaDB 10.1.3, MariaDB Galera Cluster 10.0.17, MariaDB Galera Cluster 5.5.42
25.3.8N/A
25.3.7N/A
25.3.6N/A
25.3.5MariaDB 10.1.1, MariaDB Galera Cluster 10.0.10, MariaDB Galera Cluster 5.5.37
25.3.4N/A
25.3.3N/A
25.3.2MariaDB Galera Cluster 10.0.7, MariaDB Galera Cluster 5.5.35

See Also

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