ctdb_mutex_ceph_rados_helper can be used as a recovery lock provider for CTDB. When configured, split brain avoidance during CTDB recovery will be handled using locks against an object located in a Ceph RADOS pool. To enable this functionality, include the following line in the [cluster] section of ctdb.conf(5):
recovery lock = !ctdb_mutex_ceph_rados_helper [Cluster] [User] [Pool] [Object] Cluster: Ceph cluster name (e.g. ceph) User: Ceph cluster user name (e.g. client.admin) Pool: Ceph RADOS pool name Object: Ceph RADOS object name
The Ceph cluster Cluster must be up and running, with a configuration, and keyring file for User located in a librados default search path (e.g. /etc/ceph/). Pool must already exist.
For informational purposes, ctdb_mutex_ceph_rados_helper will also register the recovery lock holder in Ceph Manager's service map.
ctdb(7), ctdbd(1), http://ctdb.samba.org/
This documentation was written by David Disseldorp
Copyright © 2016 David Disseldorp
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, see http://www.gnu.org/licenses.