[ovirt-users] hosted engine health check issues

[Martin Sivak]

Hi,

> >> How can I disable notifications?

The notification is configured in /etc/ovirt-hosted-engine-ha/broker.conf section notification.
The email is sent when the key state_transition exists and the string OldState-NewState contains the (case insensitive) regexp from the value.

> >> Is it intended to send out these messages and detect that ovirt engine
> >> is down (which is false anyway), but not to restart the vm?

Forget about emails for now and check the /var/log/ovirt-hosted-engine-ha/agent.log and broker.log (and attach them as well btw).

> >> oVirt hosts think that hosted engine is down because it seems that hosts
> >> can't write to hosted-engine.lockspace due to glusterfs issues (or at
> >> least I think so).

The hosts think so or can't really write there? The lockspace is managed by sanlock and our HA daemons do not touch it at all. We only ask sanlock to get make sure we have unique server id.

> >> Is is possible or planned to make the whole ha feature optional?

Well the system won't perform any automatic actions if you put the hosted engine to global maintenance and only start/stop/migrate the VM manually.
I would discourage you from stopping agent/broker, because the engine itself has some logic based on the reporting.

Regards

--
Martin Sivák
msivak at redhat.com
Red Hat Czech
RHEV-M SLA / Brno, CZ

----- Original Message -----
> On 04/15/2014 04:53 PM, Jiri Moskovcak wrote:
> > On 04/14/2014 10:50 AM, René Koch wrote:
> >> Hi,
> >>
> >> I have some issues with hosted engine status.
> >>
> >> oVirt hosts think that hosted engine is down because it seems that hosts
> >> can't write to hosted-engine.lockspace due to glusterfs issues (or at
> >> least I think so).
> >>
> >> Here's the output of vm-status:
> >>
> >> # hosted-engine --vm-status
> >>
> >>
> >> --== Host 1 status ==--
> >>
> >> Status up-to-date                  : False
> >> Hostname                           : 10.0.200.102
> >> Host ID                            : 1
> >> Engine status                      : unknown stale-data
> >> Score                              : 2400
> >> Local maintenance                  : False
> >> Host timestamp                     : 1397035677
> >> Extra metadata (valid at timestamp):
> >>      metadata_parse_version=1
> >>      metadata_feature_version=1
> >>      timestamp=1397035677 (Wed Apr  9 11:27:57 2014)
> >>      host-id=1
> >>      score=2400
> >>      maintenance=False
> >>      state=EngineUp
> >>
> >>
> >> --== Host 2 status ==--
> >>
> >> Status up-to-date                  : True
> >> Hostname                           : 10.0.200.101
> >> Host ID                            : 2
> >> Engine status                      : {'reason': 'vm not running on this
> >> host', 'health': 'bad', 'vm': 'down', 'detail': 'unknown'}
> >> Score                              : 0
> >> Local maintenance                  : False
> >> Host timestamp                     : 1397464031
> >> Extra metadata (valid at timestamp):
> >>      metadata_parse_version=1
> >>      metadata_feature_version=1
> >>      timestamp=1397464031 (Mon Apr 14 10:27:11 2014)
> >>      host-id=2
> >>      score=0
> >>      maintenance=False
> >>      state=EngineUnexpectedlyDown
> >>      timeout=Mon Apr 14 10:35:05 2014
> >>
> >> oVirt engine is sending me 2 emails every 10 minutes with the following
> >> subjects:
> >> - ovirt-hosted-engine state transition EngineDown-EngineStart
> >> - ovirt-hosted-engine state transition EngineStart-EngineUp
> >>
> >> In oVirt webadmin I can see the following message:
> >> VM HostedEngine is down. Exit message: internal error Failed to acquire
> >> lock: error -243.
> >>
> >> These messages are really annoying as oVirt isn't doing anything with
> >> hosted engine - I have an uptime of 9 days in my engine vm.
> >>
> >> So my questions are now:
> >> Is it intended to send out these messages and detect that ovirt engine
> >> is down (which is false anyway), but not to restart the vm?
> >>
> >> How can I disable notifications? I'm planning to write a Nagios plugin
> >> which parses the output of hosted-engine --vm-status and only Nagios
> >> should notify me, not hosted-engine script.
> >>
> >> Is is possible or planned to make the whole ha feature optional? I
> >> really really really hate cluster software as it causes more troubles
> >> then standalone machines and in my case the hosted-engine ha feature
> >> really causes troubles (and I didn't had a hardware or network outage
> >> yet only issues with hosted-engine ha agent). I don't need any ha
> >> feature for hosted engine. I just want to run engine virtualized on
> >> oVirt and if engine vm fails (e.g. because of issues with a host) I'll
> >> restart it on another node.
> >
> > Hi, you can:
> > 1. edit /etc/ovirt-hosted-engine-ha/{agent,broker}-log.conf and tweak
> > the logger as you like
> > 2. or kill ovirt-ha-broker & ovirt-ha-agent services
> 
> Thanks for the information.
> So engine is able to run when ovirt-ha-broker and ovirt-ha-agent isn't
> running?
> 
> 
> Regards,
> René
> 
> >
> > --Jirka
> >>
> >> Thanks,
> >> René
> >>
> >>
> >
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