Difference between revisions of "Configuring the CTDB recovery lock"

(CTDB configuration: Update for 4.9 (and 4.8))
m (Samba <= 4.8)
Line 16: Line 16:
 
     recovery lock = /clusterfs/.ctdb/reclock
 
     recovery lock = /clusterfs/.ctdb/reclock
  
== Samba <= 4.8 ==
+
== Samba &le; 4.8 ==
  
 
The equivalent <code>ctdbd.conf</code> option is <code>CTDB_RECOVERY_LOCK</code>.  For example:
 
The equivalent <code>ctdbd.conf</code> option is <code>CTDB_RECOVERY_LOCK</code>.  For example:
  
 
   CTDB_RECOVERY_LOCK=/clusterfs/.ctdb/reclock
 
   CTDB_RECOVERY_LOCK=/clusterfs/.ctdb/reclock

Revision as of 05:53, 17 September 2018

Goal

Configure CTDB to use a recovery lock to avoid a "split-brain" situation.

Prerequisites

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