def stop():
"""Gracefully remove ourself from RabbitMQ cluster before unit is removed
If RabbitMQ have objections to node removal, for example because of this
being the only disc node to leave the cluster, the operation will fail and
unit removal will be blocked with error for operator to investigate.
In the event of a unit being forcefully or abrubtly removed from the
cluster without a chance to remove itself, it will be left behind as a
stopped node in the RabbitMQ cluster. Having a dormant no longer existing
stopped node lying around will cause trouble in the event that all RabbitMQ
nodes are shut down. In such a situation the cluster most likely will not
start again without operator intervention as RabbitMQ will want to
interrogate the now non-existing stopped node about any queue it thinks it
would be most likely to have authoritative knowledge about.
For this reason any abruptly removed nodes will be cleaned up periodically
by the leader unit during its update-status hook run.
This call is placed in stop hook and not in the cluster-relation-departed
hook because the latter is not called on the unit being removed.
"""
rabbit.leave_cluster()
def stop():
"""Gracefully remove ourself from RabbitMQ cluster before unit is removed
If RabbitMQ have objections to node removal, for example because of this
being the only disc node to leave the cluster, the operation will fail and
unit removal will be blocked with error for operator to investigate.
In the event of a unit being forcefully or abrubtly removed from the
cluster without a chance to remove itself, it will be left behind as a
stopped node in the RabbitMQ cluster. Having a dormant no longer existing
stopped node lying around will cause trouble in the event that all RabbitMQ
nodes are shut down. In such a situation the cluster most likely will not
start again without operator intervention as RabbitMQ will want to
interrogate the now non-existing stopped node about any queue it thinks it
would be most likely to have authoritative knowledge about.
For this reason any abruptly removed nodes will be cleaned up periodically
by the leader unit during its update-status hook run.
This call is placed in stop hook and not in the cluster-relation-departed
hook because the latter is not called on the unit being removed.
"""
rabbit.leave_cluster()