Managing HA controller nodes

Review information on managing HA controller nodes.

Managing OpenStack services on HA Controller Nodes
OpenStack services on HA controller nodes are managed by Pacemaker. If you need to manage the services, you can place an HA controller node in standby mode to move it to another node. You can also place an entire set of HA controllers into standby mode, for example, in preparing for a site power outage. If necessary, you can instruct Pacemaker to stop managing a specific resource.
Shutting down or restarting an HA controller node
You might need to shut down or manually restart your HA controller node for various reasons.
Shutting down or restarting all HA controller nodes simultaneously
You might need to shut down or restart your entire cluster of HA controller nodes at the same time.
Restarting HA controllers after a cluster-wide power outage
You might need to restart the high availability (HA) controllers after a power outage that affects the entire cluster.

Parent topic: Managing IBM Cloud Manager with OpenStack as an Administrator