Pacemaker is a high availability cluster resource manager that can be used to provide high availability for MySQL databases. It monitors MySQL instances and replicates data between nodes using replication. If the primary MySQL node fails, Pacemaker detects the failure and fails over to the secondary node, bringing the MySQL service back online without downtime. Pacemaker manages shared storage and
![MySQL HA with PaceMaker](https://cdn-ak-scissors.b.st-hatena.com/image/square/fc83d5292cc99126af8f3c959491332c96984e31/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fmysql-pacemaker-100329022737-phpapp01-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)