[ClusterLabs] Coming in Pacemaker 2.0.1 / 1.1.20: improved fencing history

[Ken Gaillot]

Hi all,

I expect to have the first release candidate for Pacemaker 2.0.1
available soon! It will mostly be a bug fix release, but one
interesting new feature is convenient access to fencing history.

Pacemaker has long had the stonith_admin --history option to show a
history of past fencing actions that the cluster has carried out.
However, this list included only events since the node it was run on
had joined the cluster, and it just wasn't very convenient.

In the upcoming release, the cluster keeps the fence history
synchronized across all nodes, so you get the same answer no matter
which node you query.

More importantly, crm_mon will now show fencing failures and pending
fencing actions by default. This gives a much greater visibility into
past and current issues in a convenient way. You can control the level
of detail (or whether it shows up at all) via command-line options.

Along with that, there is a new stonith_admin --cleanup option to erase
the fence history, once you no longer want to see it in the crm_mon
status display.
-- 
Ken Gaillot <kgaillot at redhat.com>