[Pacemaker] STONITH Deathmatch Explained

[Tim Serong]

Greetings,

I've written up a brief document entitled "STONITH Deathmatch Explained
(and Some Hints for Resource Agent Authors and Systems Engineers)":

  http://ourobengr.com/ha

It's a description of causes of STONITH deathmatch in
Heartbeat/Pacemaker HA clusters, where two nodes continually shoot each
other, thus rendering the system less available than a non-HA system
would be.

Hopefully publishing this will save at least a few people from some of
the pain myself and a couple of others experienced last year, in
particular when trying to debug resource agents that were misbehaving in
unexpected ways.

Comments, feedback, etc. welcome.

Thanks,

Tim