Will have a look. Thanks Arjun
On Wed, Oct 21, 2015 at 8:26 PM, Ken Gaillot <kgail...@redhat.com> wrote: > On 10/21/2015 08:24 AM, Michael Schwartzkopff wrote: > > Am Mittwoch, 21. Oktober 2015, 18:50:15 schrieb Arjun Pandey: > >> Hi folks > >> > >> I had a question on monitoring of cluster events. Based on the > >> documentation it seems that cluster monitor is the only method > >> of monitoring the cluster events. Also since it seems to poll > >> based on the interval configured it might miss some events. Is > >> that the case ? > > > > No. the cluser is event-based. So it won't miss any event. If you > > use the cluster's tools, they see hte events. If you monitor the > > events you won't miss any either. > > FYI, Pacemaker 1.1.14 will have built-in handling of notification > scripts, without needing a ClusterMon resource. These will be > event-driven. Andrew Beekhof did a recent blog post about it: > http://blog.clusterlabs.org/blog/2015/reliable-notifications/ > > Pacemaker's monitors are polling, at the interval specified when > configuring the monitor operation. Pacemaker relies on the resource > agent to return status for monitors, so technically it's up to the > resource agent whether it can "miss" brief outages that occur between > polls. All the ones I've looked at would miss them, but generally > that's considered acceptable if the service is once again fully > working when the monitor runs (because it implies it recovered itself). > > Some people use an external monitoring system (nagios, icinga, zabbix, > etc.) in addition to Pacemaker's monitors. They can complement each > other, as the external system can check system parameters outside > Pacemaker's view and can alert administrators for some early warning > signs before a resource gets to the point of needing recovery. Of > course such monitoring systems are also polling at configured intervals. > > _______________________________________________ > Users mailing list: Users@clusterlabs.org > http://clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org >
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