On Wed, Sep 30, 2009 at 02:22:32PM +0200, James Brackinshaw wrote:
> Hello,
> 
> I have a two node heartbeat setup on Centos 5.3.
> 
> The two nodes are in separate locations and connected only via
> ethernet. Because of this we require that a human guarantee that a
> node is dead before a switchover occurs. We use meatclient for this.
> 
> Automatic failback is turned off. We would like the primary node to do
> all of the work unless we manually switch roles or the primary node
> dies.
> 
> We recently had a network outage. We expected that the primary node
> would stay active and providing services. Instead, the two nodes
> switched roles while the network was being repaired.
> 
> I cannot understand how the role switching happened since we ran no
> scripts manually (at least not at the start), and did not run
> meatclient.
> 
> Can anyone help me understand why this happened?

Connectivity came back.

> I attach my log files.

I did not have a look.

But you are likely to find
 WARN node whatever-xy: is dead
 ...
 CRIT: Cluster node whatever-xy returning after partition.
 WARN: Deadtime value may be too small
...

this is handled by the cluster software by stopping all resources,
then starting on the "preferred" node.

-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
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