Nagios vs Juju monitoring

[Thomas Leonard]

Hi guys,

We're trying to use Juju to set up a nagios service to monitor various other 
Juju-deployed services. We deployed nagios and some services and added 
relations between them. Nagios showed all the hosts in green. Good.

Then, to test it, we paused one of the service VMs. We were hoping that 
nagios would show the failed service in red and send a warning notification.

Instead, the service simply disappeared from the nagios display. It looks 
like Juju detected that the machine wasn't available and removed the relation.

We unpaused the machine and then manually restarted juju-machine-agent on it 
and it reappeared in nagios.

It seems like this behaviour isn't very useful; it is intentional?


-- 
Dr Thomas Leonard
IT Innovation Centre
Gamma House, Enterprise Road,
Southampton SO16 7NS, UK


tel: +44 23 8059 8866

mailto:tal at it-innovation.soton.ac.uk
http://www.it-innovation.soton.ac.uk/