On 5/3/21 8:57 AM, Ulrich Windl wrote:
Andrei Borzenkov <arvidj...@gmail.com> schrieb am 30.04.2021 um 18:24 in
Nachricht <e8c962de-59d8-814e-5fa0-6402d864b...@gmail.com>:
On 30.04.2021 17:57, Ken Gaillot 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.
The documentation for it is rather short. In particular ...
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 is not documented anywhere.
Is there any howto, blog or whatever with example usage and configuration?
For SLES15 SP2 I found:
monitor_scripts (string): space-separated list of monitor scripts
To additionally monitor services within the virtual domain, add this
parameter with a list of scripts to monitor.
Note: when monitor scripts are used, the start and migrate_from
operations
will complete only when all monitor scripts have completed successfully.
Be sure to set the timeout of these operations to accommodate this delay.
Guess this is a different feature (one of the virtualdomain-RA)
but might be useful here as well.
(This feature was added before OS containers became popular, so the
naming is a bit unfortunate.)
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