Open Stack

Hi all:

What Fabian is describing is exactly the problem we're having, there
are _many_ routers in these environments so we'd be looking at N
requests which can get out of control quickly

Thanks
Mohammed

On Mon, Aug 17, 2020 at 10:05 AM Fabian Zimmermann <dev.faz at gmail.com> wrote:
>
> Hi,
>
> yes for 1 router, but doing this in a loop for hundreds is not so performant ;)
>
>  Fabian
>
> Am Mo., 17. Aug. 2020 um 16:04 Uhr schrieb Assaf Muller <amuller at redhat.com>:
> >
> > On Mon, Aug 17, 2020 at 9:59 AM Fabian Zimmermann <dev.faz at gmail.com> wrote:
> > >
> > > Hi,
> > >
> > > I can just tell you that we are doing a similar check for dhcp-agent, but here we just execute a suitable SQL-statement to detect more than 1 agent / AZ.
> > >
> > > Doing the same for L3 shouldn't be that hard, but I dont know if this is what you are looking for?
> >
> > There's already an API for this:
> > neutron l3-agent-list-hosting-router <router_id>
> >
> > It will show you the HA state per L3 agent for the given router.
> >
> > >
> > >  Fabian
> > >
> > >
> > > Am Mo., 17. Aug. 2020 um 14:11 Uhr schrieb Mohammed Naser <mnaser at vexxhost.com>:
> > >>
> > >> Hi all,
> > >>
> > >> Over the past few days, we were troubleshooting an issue that ended up
> > >> having a root cause where keepalived has somehow ended up active in
> > >> two different L3 agents.  We've yet to find the root cause of how this
> > >> happened but removing it and adding it resolved the issue for us.
> > >>
> > >> As we work on improving our monitoring, we wanted to implement
> > >> something that gets us the info of # of active routers to check if
> > >> there's a router that has >1 active L3 agent but it's hard because
> > >> hitting the /l3-agents endpoint on _every_ single router hurts a lot
> > >> on performance.
> > >>
> > >> Is there something else that we can watch which might be more
> > >> productive?  FYI -- this all goes in the open and will end up inside
> > >> the openstack-exporter:
> > >> https://github.com/openstack-exporter/openstack-exporter and the Helm
> > >> charts will end up with the alerts:
> > >> https://github.com/openstack-exporter/helm-charts
> > >>
> > >> Thanks!
> > >> Mohammed
> > >>
> > >> --
> > >> Mohammed Naser
> > >> VEXXHOST, Inc.
> > >>
> >



-- 
Mohammed Naser
VEXXHOST, Inc.