To implement high availability, run an instance of the database on each controller node and use Galera Cluster to provide replication between them. Galera Cluster is a synchronous multi-master database cluster, based on MySQL and the InnoDB storage engine
This guide describes how to install and configure OpenStack for high availability. It supplements the Installation Guides and assumes that you are familiar with the material in those guides.
In a high-availability deployment, Red Hat OpenStack Platform uses the MariaDB Galera Cluster to manage database replication. As described in Section 4.3, “OpenStack Services Configured in Pacemaker”, Pacemaker runs the Galera service using a
OpenStack MySQL High Availability OpenStack High Availability 有兩種常見部署模式，一個為 Active/Active 與 Active/Passive ，前者為每個節點主動提供服務，後者則是主只有節點提供服務，另外節點當作備援使用。 MySQL 的 HA 可以用以下兩種方式達成。
MariaDB Galera Cluster is supported for environments based on Red Hat distributions; configuration instructions are in maria-db-ha. Percona XtraDB Cluster works with Galera.
Explore the strength of OpenStack's High Availability (HA) setup in this comprehensive demo! We’ll start by presenting an HA architecture built with 3 HAProxy load balancers, 2 controller...
