Re: [Rdo-list] [Mitaka] Automatic restart for services
On 11/12/2015 08:06 AM, Alan Pevec wrote:
2015-11-12 14:00 GMT+01:00 Perry Myers <pmyers(a)redhat.com>:
> can you describe what you mean here by automatic restart for services?
>
> I'm worried what the implications would be for things that are running
> under Pacemaker control in an HA environment, so I think we need more
> details here
Can we have more details what "under Pacemaker control" means?
Haikel's proposal is about modifying systemd service unit files but
afaik Pacemaker is not using them but what they call "resource agents"
?
Not correct... not every service _has_ a resource agent. Mariadb/galera
and rabbitmq do, but all other services are controlled via Pacemaker via
their systemd scripts
So when you tell pacemaker to stop nova-api, it does so via systemd
If something outside of pacemaker knowledge (like user from command
line, or rpm %post or whatever) uses systemd directly to stop nova-api,
pacemaker says "OMG the service died" and tries to recover
Perry