[ClusterLabs] VirtualDomain & "deeper" monitors - what/how?

[Strahil Nikolov]

Hey Ken,
does this feature work for other Nagios stuff ?
Best Regards,Strahil Nikolov
 
 
  On Fri, Apr 30, 2021 at 17:57, Ken Gaillot<kgaillot at redhat.com> wrote:   On Fri, 2021-04-30 at 11:00 +0100, lejeczek wrote:
> Hi guys
> 
> I'd like to ask around for thoughts & suggestions on any 
> semi/official ways to monitor VirtualDomain.
> Something beyond what included RA does - such as actual 
> health testing of and communication with VM's OS.
> 
> many thanks, L.

This use case led to a Pacemaker feature many moons ago ...

Pacemaker supports nagios plug-ins as a resource type (e.g.
nagios:check_apache_status). These are service checks usually used with
monitoring software such as nagios, icinga, etc.

If the service being monitored is inside a VirtualDomain, named vm1 for
example, you can configure the nagios resource with the resource meta-
attribute container="vm1". If the nagios check fails, Pacemaker will
restart vm1.

(This feature was added before OS containers became popular, so the
naming is a bit unfortunate.)
-- 
Ken Gaillot <kgaillot at redhat.com>

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