The Mutual Failover option for Pacemaker-managed Db2 instances

You can configure a Db2 instance that is running on a Pacemaker-managed Linux cluster to use the Mutual Failover high availability option.

Important: Mutual Failover high availability is supported when using Pacemaker as the integrated cluster manager. The Pacemaker cluster manager for automated fail-over to HADR standby databases is packaged and installed with Db2® 12.1. Pacemaker can be used for both production and text environments.

Db2 Mutual Failover is a highly available deployment where two hosts have an identical Db2 instance installation and a shared mount, with only one host active at one time. With this solution, the setup, configuration, and management of the deployment is handled by the db2cm utility, and the automation of the solution is monitored and controlled by the Pacemaker cluster manager.