def _remove_server(group_id, server_id):
"""Remove a server from a group.
"""
group = _retrieve_group(group_id)
server = _retrieve_server(server_id, group_id)
if group.master == server.uuid:
raise _errors.ServerError(
"Cannot remove server (%s), which is master in group (%s). "
"Please, demote it first." % (server.uuid, group_id))
_server.MySQLServer.remove(server)
server.disconnect()
_server.ConnectionManager().purge_connections(server)
def _set_status_faulty(server, update_only):
"""Set server's status to fauly and trigger a failover if the server
is a master.
This function assumes that the SERVER_LOST event is executed before
the FAIL_OVER event.
"""
server.status = _server.MySQLServer.FAULTY
_server.ConnectionManager().kill_connections(server)
if not update_only:
group = _server.Group.fetch(server.group_id)
if group.master == server.uuid:
_LOGGER.info("Master (%s) in group (%s) has "
"been lost.", server.uuid, group.group_id)
_events.trigger_within_procedure("FAIL_OVER", group.group_id)
_events.trigger_within_procedure("SERVER_LOST", server.group_id,
str(server.uuid))