Configuring the CTDB recovery lock
From SambaWiki
Goal
Configure CTDB to use a recovery lock to avoid a "split-brain" situation.
Prerequisites
- Setting up a cluster filesystem (by default - see below)
CTDB configuration
The recovery lock, configured via the recovery lock
option in the cluster
section, provides important split-brain prevention and is usually configured to point to a lock file in the cluster filesystem. See the RECOVERY LOCK section in ctdb(7) for more details.
For example:
[cluster] recovery lock = /clusterfs/.ctdb/reclock
Samba <= 4.8
The equivalent ctdbd.conf
option is CTDB_RECOVERY_LOCK
. For example:
CTDB_RECOVERY_LOCK=/clusterfs/.ctdb/reclock