[ClusterLabs] Pacemaker 1.1.16 - Release Candidate 1

Klaus Wenninger kwenning at redhat.com
Thu Nov 3 12:53:05 EDT 2016

On 11/03/2016 05:28 PM, Adam Spiers wrote:
> Ken Gaillot <kgaillot at redhat.com> wrote:
>> ClusterLabs is happy to announce the first release candidate for
>> Pacemaker version 1.1.16. Source code is available at:
>> https://github.com/ClusterLabs/pacemaker/releases/tag/Pacemaker-1.1.16-rc1
>> The most significant enhancements in this release are:
> [snipped]
>> * Watchdog-based fencing using sbd now works on remote nodes.
> What were the problems with this before, exactly?  Thanks!
If you enabled just cluster-watcher on remote-nodes that
was not much of an observation.

But if you in addition enabled pacemaker-watcher then
when the remote-node-resource switched from one
cluster-node to another the client receiving the
cib inside pacemaker-watcher didn't get that switch
and still insisted on getting something via the old
connection so that the node was reset via watchdog.

Introducing a tcp-timeout derived from the
sbd-watchdog-timeout makes the connection timeout
and the client switches to the new control-node.

So a remote-node would just be watchdog-fenced
if the remote-node-resource doesn't reconnect within
time - regardless which node it is running now.

Actually that commit in pacemaker should be beneficial
for tooling run on remote-nodes - via proxy - in general.
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