ctdb_mutex_ceph_rados_helper - Man Page

Ceph RADOS cluster mutex helper

Description

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.

See Also

ctdb(7), ctdbd(1), http://ctdb.samba.org/

Author

This documentation was written by David Disseldorp

Info

09/20/2021 CTDB - clustered TDB database