3.2.2. Querying and Setting Cluster Options

Cluster options can be queried and modified using the crm_attribute tool. To get the current value of cluster-delay, simply use:

crm_attribute --attr-name cluster-delay --get-value

which is more simply written as

crm_attribute --get-value -n cluster-delay

If a value is found, the you'll see a result such as this

  # crm_attribute --get-value -n cluster-delay
 name=cluster-delay value=60s

However if no value is found, the tool will display an error:

 # crm_attribute --get-value -n clusta-deway
 name=clusta-deway value=(null)
 Error performing operation: The object/attribute does not exist

To use a different value, eg. 30s, simply run:

crm_attribute --attr-name cluster-delay --attr-value 30s

To go back to the cluster's default value, you can then delete the value with:

crm_attribute --attr-name cluster-delay --delete-attr