Useful Corosync and Pacemaker Commands

List of useful commands to for Corosync and Pacemaker clusters.

• View the real-time status of nodes and resources:

crm_mon

• View one-off status of nodes and resources:

crm status

• View cluster configuration:

crm configure show

• Set a node to standby mode, which can be used to simulate a node becoming unavailable:

crm node standby <node name>

• Set a node's status from standby to online:

crm node online <node name>

• Start a resource or a resource group:

crm resource start <resource name>

• Stop a resource or a resource group:

crm resource stop <resource name>

• Edit a resource, which allows you to reconfigure it:

crm configure edit <resource name>

• Delete a resource (must be stopped before it is deleted):

crm configure delete <resource name>

• Migrate a resource to another node:

crm resource migrate <resource name> <node name>

• Configuring a cluster to not manage a resource:

crm_resource --resource <resource name> --set-parameter is-managed --meta --parameter-value false

• Clear a resource that is stuck in "(unmanaged) FAILED" state, e.g. due to a failed stop action:

crm_resource -P crm resource cleanup <resource name>

• List resource agents by type:

crm ra list lsb crm ra list systemd crm ra list ocf heartbeat crm ra list ocf pacemaker