31.5. Putting a cluster in maintenance mode
When a cluster is in maintenance mode, the cluster does not start or stop any services until told otherwise. When maintenance mode is completed, the cluster does a sanity check of the current state of any services, and then stops or starts any that need it.
To put a cluster in maintenance mode, use the following command to set the maintenance-mode cluster property to true.
# pcs property set maintenance-mode=true
To remove a cluster from maintenance mode, use the following command to set the maintenance-mode cluster property to false.
# pcs property set maintenance-mode=false
For general information on setting and removing cluster properties, see Setting and removing cluster properties.