[Pacemaker] Using pacemaker for service startup / single node cluster ?

Robert reg at elconas.de
Fri Aug 15 09:07:11 EDT 2008

>> Well the idea is to automate system administration while letting the 
>> administrator be the commander in chief :)
>> Setting up disaster recovery sites is difficult and errorprone.
> DR site is not a supported scenario so far. There's so much more we need
> to get right until then ...
You are right. And why is this - basically because it is REALLY hard to 
reliably tell the current status the nodes (as it really is and not as 
the cluster sees it, split brain etc.). This is due to the really 
unreliable heartbeat infrastructure in DR / Split Site / Wan 
environments, isn't is ? Well with a manually confirming administrator 
your have a reliable source of information. the admin can contact other 
departments prior to doing the failover and ask for the real status of 
the data center. That's better than any cluster can eventually get.


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