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: In
Db2®
11.5.8 and later, Mutual Failover high
availability is supported when using Pacemaker as the
integrated cluster manager. In Db2
11.5.6 and later, the Pacemaker cluster manager
for automated fail-over to HADR standby databases is packaged and installed with Db2. In Db2
11.5.5, Pacemaker is included and
available for production environments. In Db2
11.5.4, Pacemaker is included as
a technology preview only, for development, test, and proof-of-concept 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.