# The migration functions should be idempotent. If the migration has
# been already applied, it should be possible to call the function
# again without damaging the deployment or failing the upgrade.
+
+function remove_ceilometer_alarm {
+ if pcs status | grep openstack-ceilometer-alarm; then
+ # Disable pacemaker resources for ceilometer-alarms
+ pcs resource disable openstack-ceilometer-alarm-evaluator
+ check_resource openstack-ceilometer-alarm-evaluator stopped 600
+ pcs resource delete openstack-ceilometer-alarm-evaluator
+ pcs resource disable openstack-ceilometer-alarm-notifier
+ check_resource openstack-ceilometer-alarm-notifier stopped 600
+ pcs resource delete openstack-ceilometer-alarm-notifier
+
+ # remove constraints
+ pcs constraint remove ceilometer-delay-then-ceilometer-alarm-evaluator-constraint
+ pcs constraint remove ceilometer-alarm-evaluator-with-ceilometer-delay-colocation
+ pcs constraint remove ceilometer-alarm-evaluator-then-ceilometer-alarm-notifier-constraint
+ pcs constraint remove ceilometer-alarm-notifier-with-ceilometer-alarm-evaluator-colocation
+ pcs constraint remove ceilometer-alarm-notifier-then-ceilometer-notification-constraint
+ pcs constraint remove ceilometer-notification-with-ceilometer-alarm-notifier-colocation
+
+ fi
+
+ # uninstall openstack-ceilometer-alarm package
+ yum -y remove openstack-ceilometer-alarm
+
+}