# MariaDB Galera Cluster 10.0.31 Release Notes

The most recent [MariaDB Galera Cluster 10.0](https://github.com/mariadb-corporation/docs-release-notes/blob/test/kb/en/galera/README.md) release is:[**MariaDB Galera Cluster 10.0.38**](https://mariadb.com/docs/release-notes/community-server/old-releases/mariadb-galera-cluster-releases/mariadb-galera-100-release-notes/mariadb-galera-cluster-10038-release-notes) [Download Now](https://downloads.mariadb.org/mariadb-galera/10.0.38)

[Download](https://downloads.mariadb.org/mariadb-galera/10.0.31)[Release Notes](https://mariadb.com/docs/release-notes/community-server/old-releases/mariadb-galera-cluster-releases/mariadb-galera-100-release-notes/mariadb-galera-cluster-10031-release-notes)[Changelog](https://mariadb.com/docs/release-notes/community-server/old-releases/mariadb-galera-cluster-releases/mariadb-galera-100-changelogs/mariadb-galera-cluster-10031-changelog)[Overview of MariaDB Galera Cluster](https://github.com/mariadb-corporation/docs-release-notes/blob/test/kb/en/what-is-mariadb-galera-cluster/README.md)

**Release date:** 2 Jun 2017

MariaDB Galera Cluster 10.0.31 is a [***Stable***](https://mariadb.com/docs/release-notes/community-server/about/release-criteria) (GA)\
release. It is a merge of [MariaDB 10.0.31](https://mariadb.com/docs/release-notes/community-server/old-releases/10.0/10.0.31) and [Galera Cluster](https://codership.com/content/using-galera-cluster) with\
additional bug fixes.

Various articles about MariaDB Galera Cluster, including [known limitations](https://app.gitbook.com/s/3VYeeVGUV4AMqrA3zwy7/reference/mariadb-galera-cluster-known-limitations) and [how to get started](https://app.gitbook.com/s/3VYeeVGUV4AMqrA3zwy7/galera-management/installation-and-deployment/getting-started-with-mariadb-galera-cluster) are\
available in the [**Galera**](https://github.com/mariadb-corporation/docs-release-notes/blob/test/kb/en/galera/README.md) section of the documentation.

For a list of changes made in MariaDB Galera Cluster 10.0.31, with links to\
detailed information on each push, see the [MariaDB Galera Cluster 10.0.31 Changelog](https://mariadb.com/docs/release-notes/community-server/old-releases/mariadb-galera-cluster-releases/mariadb-galera-100-changelogs/mariadb-galera-cluster-10031-changelog).\
For changes made in [MariaDB 10.0.31](https://mariadb.com/docs/release-notes/community-server/old-releases/10.0/10.0.31), see the [MariaDB 10.0.31 Changelog](https://mariadb.com/docs/release-notes/community-server/changelogs/changelogs-mariadb-100-series/mariadb-10031-changelog)

## Updates and fixes in this version

* This release is mainly a bug-fix release.
* Codership changes: [github.com/codership/mysql-wsrep/tree/5.6](https://github.com/codership/mysql-wsrep/tree/5.6) (till commit c3fc46e).
* The [Galera library](https://codership.com/content/using-galera-cluster) used\
  by MariaDB Galera Cluster and included in the MariaDB repositories is\
  currently at version 25.3.20.
* As per the [MariaDB Deprecation Policy](https://mariadb.com/docs/release-notes/community-server/about/platform-deprecation-policy), this will be\
  the last release of [MariaDB 10.0](https://mariadb.com/docs/release-notes/community-server/old-releases/10.0/changes-improvements-in-mariadb-10-0) for Ubuntu 12.04 LTS "Precise" and Mint 13\
  LTS "Maya"
* Fixes for the following [security vulnerabilities](https://app.gitbook.com/s/SsmexDFPv2xG2OTyO5yV/security/cve):
  * CVE-\`-\`\`\`
* See the [MariaDB 10.0.31 Release Notes](https://mariadb.com/docs/release-notes/community-server/old-releases/10.0/10.0.31) and [Changelog](https://mariadb.com/docs/release-notes/community-server/changelogs/changelogs-mariadb-100-series/mariadb-10031-changelog) for more information on the changes in\
  MariaDB.

## Notes

* Running MariaDB Galera Cluster 5.5 and 10.0 nodes in a cluster is not\
  supported ([MDEV-6257](https://jira.mariadb.org/browse/MDEV-6257))
* This version of MariaDB Galera Cluster supports `wsrep` API v25 which means\
  MariaDB Galera Cluster can be used with either a 25.2.x or 25.3.x\
  Galera `wsrep` provider. A 25.3.x `wsrep` provider is included in the\
  MariaDB repositories and is also available from the [downloads](https://downloads.mariadb.org/mariadb-galera/10.0) page.
* On Ubuntu and Debian, the Galera Arbitrator daemon (garbd) and the galera\
  library are in two separate packages. The packages are named galera-3\
  and galera-arbitrator-3. When installing MariaDB Galera Cluster on Ubuntu and\
  Debian (the mariadb-galera-server package), the galera-3 package will be\
  automatically installed. You can then install the arbitrator package on a\
  separate node (recommended) or on one of the nodes running\
  mariadb-galera-server (not recommended).

Note: If Galera 25.2.x and 25.3.x are both being used in the cluster, MariaDB\
with Galera 25.3.x must be started with [wsrep\_provider\_options='socket.checksum=1'](https://app.gitbook.com/s/3VYeeVGUV4AMqrA3zwy7/reference/wsrep-variable-details/wsrep_provider_options#socketchecksum) in order to make it backward\
compatible with Galera v2. Galera wsrep providers other than 25.3.x or 25.2.x\
are not supported.

Thank you for using MariaDB Galera Cluster!

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