[Linux-HA] Need to restart heartbeat on the recovered node?

[Dejan Muhamedagic]

On Wed, Sep 05, 2007 at 02:28:40PM +0800, Ian Jiang wrote:
> I have 2 nodes:
>     Primary hostname=IanVM-4, ipaddr=192.168.1.224
>     Slave    hostname=IanVM-5, ipaddr= 192.168.1.225
> and one resource
>     IPaddr_192_168_1_230
> configured.
> 
> This resource will be failovered to IanVM-5 when I disconnect the
> ethernet card of IanVM-4. My question is: should heartbeat be
> restarted on IanVM-4 after I reconnect and start up the ethernet card
> of IanVM-4?

No. Heartbeat should be able to recover from split brain.
However, there are reports on failures in this case. However
again...

** WARNING ******************************************
A split brain is a very very very very bad thing. It should not
be allowed to ever happen. If there is a chance that it does then
you need to redesign your cluster. Healthy communication is the
one most important thing. If it fails, well, all bets are off.
*****************************************************

And pulling network cables is not a good way to test.

> 
> 
> -- 
> Ian Jiang
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