To configure a rule, use the following command. If
score is omitted, it defaults to INFINITY. If
id is omitted, one is generated from the constraint_id. The rule_type should be
pcs constraint rule add constraint_id [rule_type] [score=score [id=rule_id] expression|date_expression|date_spec options
To remove a rule, use the following. If the rule that you are removing is the last rule in its constraint, the constraint will be removed.
pcs constraint rule remove rule_id