How to add a node in existing RHEL pacemaker cluster?

Environment

• Red Hat Enterprise Linux Server 7, 8 or 9 (with the High Availability Add On)

Issue

• How to add a node in existing RHEL 7, 8 or 9 cluster?
• How to add a node in existing RHEL pacemaker cluster?

Resolution

The steps for adding a new cluster node to an existing cluster is outlined in the following document:

• Chapter 4.4. Managing Cluster Nodes Red Hat Enterprise Linux 7 | 4.4.3. Adding Cluster Nodes
• Chapter 20. Managing cluster nodes Red Hat Enterprise Linux 8 | 20.3. Adding cluster nodes
• Chapter 20. Managing cluster nodes Red Hat Enterprise Linux 9 | 20.3. Adding cluster nodes

Note: If GFS2 filesystem is used in the environment, then after adding the node in existing cluster, follow the steps in After adding a new node to the Pacemaker cluster, GFS2 filesystem is not getting mounted on the newly added node.

This solution is part of Red Hat’s fast-track publication program, providing a huge library of solutions that Red Hat engineers have created while supporting our customers. To give you the knowledge you need the instant it becomes available, these articles may be presented in a raw and unedited form.