Nagios peer config error: Could not find any host matching 'juju-placement-1'

[Bas de Bruijne]

Nagios dashboard fails with:

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[1637248412] Nagios 3.5.1 starting... (PID=16822)
[1637248412] Local time is Thu Nov 18 15:13:32 UTC 2021
[1637248412] LOG VERSION: 2.0
[1637248412] livestatus: Livestatus 1.2.8p16 by Mathias Kettner. Socket: '/var/lib/nagios3/livestatus/socket'
[1637248412] livestatus: Please visit us at http://mathias-kettner.de/
[1637248412] livestatus: Hint: please try out OMD - the Open Monitoring Distribution
[1637248412] livestatus: Please visit OMD at http://omdistro.org
[1637248412] livestatus: Warning: environment_macros are enabled. This might decrease the overall nagios performance
[1637248412] livestatus: Finished initialization. Further log messages go to /var/log/nagios3/livestatus.log
[1637248412] Event broker module '/usr/lib/check_mk/livestatus.o' initialized successfully.
[1637248412] Error: Could not find any host matching 'juju-placement-1' (config file '/etc/nagios3/conf.d/juju-hostgroup_juju-placement.cfg', starting on line 4)
[1637248412] Error: Could not expand members specified in hostgroup (config file '/etc/nagios3/conf.d/juju-hostgroup_juju-placement.cfg', starting on line 4)
[1637248412] Bailing out due to one or more errors encountered in the configuration files. Run Nagios from the command line with the -v option to verify your config before restarting. (PID=16822)
[1637248412] livestatus: deinitializing
[1637248412] Caught SIGSEGV, shutting down...
--------------------------------------------------------------

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ubuntu@nagios2-2:~$ cat /etc/nagios3/conf.d/juju-hostgroup_juju-placement.cfg
# Configuration file /etc/nagios3-inprogress/conf.d/juju-hostgroup_juju-placement.cfg
# Edited by PyNag on Mon Nov 22 18:59:07 2021

define hostgroup {
         hostgroup_name juju-placement
         notes #autogenerated#
         members juju-placement-0,juju-placement-1
}
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Running
$ juju status --model foundations-maas:openstack placement
and
$ juju status --model foundations-maas:lma nagios
Shows that placement/0 and placement/1 and nagios/0 are all happy and alive.

Maybe the problem is that placement is on model foundations-maas:openstack and nagios is on model foundations-maas:lma, but this difference is not defined in `juju-hostgroup_juju-placement.cfg`.

[Eric Chen (eric-chen)]

This charm is no longer being actively maintained. There is no further update of this issue over 1 year. We will close it.
Please consider using the new Canonical Observability Stack instead.
(https://charmhub.io/topics/canonical-observability-stack).