Hello List,
suppose i have a cluster with 2 members, lets call
them server1 and server2.
Before a network outage - a service configured for
heartbeat is running on server2 only, crm_mon shows
that both nodes are online on both servers.
Now after the network outage, server1 starts up the
same service as server2 - this makes sense at is the
expected behaviour of a fail over.
During this time the service is running on both
servers because they do not "see each other".
After a few hours, the network is restored - server1
sees that server2 is already (or still) running the
service in question - so it disables the service.
server1 shows both nodes online and that the service
is running on server2.
However, on server2 both nodes show as offline but the
service in question is still running and managed by
heartbeat.
Is this the expected behaviour for a Split Brain
situation ? I.e. do not activate the node (server2)
after a split brain to be sure to not have
inconsistency ?
For the record, after restarting heartbeat on server2
- crm_mon shows both nodes as online.
If this is the expected behaviour, can i disable it ?
Because the service in question can run after a split
brain - no harm will be done, no inconsitency can
exist.
Or is it a bug - that after a network outage, and
restoring of the network, server2 shows both nodes
(itself, and server1) as offline and only a restart
repairs it to the online status ?
Thank you for your input
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