add/restart/remove cluster node

# Add a node
rabbitmqctl stop_app
rabbitmqctl join_cluster rabbit@rabbit2
rabbitmqctl start_app

# Restart a node
rabbitmqctl stop
rabbitmq-server -detached

# Remove a node (locally)
rabbitmqctl stop_app
# Remove a node (remotely)
rabbitmqctl forget_cluster_node rabbit@rabbit1

# Get cluster status
rabbitmqctl cluster_status

Rotate logs

rabbitmqctl rotate_logs <suffix>


Re-syncing mirrors in HA mode

rabbitmqctl list_queues name slave_pids synchronised_slave_pids
# to see where it's not being synced:
rabbitmqctl list queues name synchronised_slave_pids | grep -v node_name > output
rabbitmqctl sync_queue name
# can do a sad little bash loop after cleaning the output file to just queue names
for i in `cat output` ; do sudo rabbitmqctl sync_queue $i ; done

General tuning tips