[Gluster-infra] r.g.o down?

[Michael Scherer]

Le jeudi 21 avril 2016 à 15:01 +0530, Kaushal M a écrit :
> On Thu, Apr 21, 2016 at 2:58 PM, Michael Scherer <misc at redhat.com> wrote:
> > Le jeudi 21 avril 2016 à 14:29 +0530, Kaushal M a écrit :
> >> On Thu, Apr 21, 2016 at 1:14 PM, Michael Scherer <misc at redhat.com> wrote:
> >> > Le jeudi 21 avril 2016 à 12:47 +0530, Kaushal M a écrit :
> >> >> I restarted Gerrit that should have fixed it for now.
> >> >>
> >> >> As this has happened several times since the migration, I thought
> >> >> something wasn't done correctly.
> >> >> Turns out the gerrit VM is a really-(really)-low end VM with just 1
> >> >> CPU core and 2GBs of RAM!!
> >> >>
> >> >> Michael, was this intentional or did you some how overlook this?
> >> >
> >> > I likely overlooked. I reused the same type of VM than the one for
> >> >
> >> >>  IIRC,
> >> >> before the migration the VM was running with a dual-core CPU at least
> >> >> and more RAM.
> >> >
> >> > 4G of ram and 2 cpus. So I propose to go to 6G and still 2 cpu for now ?
> >>
> >> Fine with me. We always have room to grow if required.
> >>
> >> >
> >> >> The hypervisor has more than enough resources to run a beefier VM. I
> >> >> was thinking of bumping the VM to a 4 Cores and 8 GB of RAM (or more).
> >> >> I'll do this if there are no objections.
> >> >
> >> > This requires a reboot however, is this ok ?
> >>
> >> Doing this shouldn't take longer that ~5minutes. We could do it any time.
> >> It would have been so much easier if libvirt allowed hot-plugging cpu
> >> and ram like disks.
> >
> > Seems to be supported in openstack, and in version we use on RHEL 7.
> >
> > And virsh has a command setvcpus with a --live switch, and the same for
> > the ram.
> 
> TIL! I've been trying to do this all the time by editing the VM xml
> config. I believe virt-manager does the same as well, because it fails
> to add cpus live as well.

so Kaushal tested and this requires a specific setup for that before. 

> >
> > Shall I try later today ?
> > (worst case, it crash and we reboot)
> 
> Sure.

So i am gonna shutdown the VM and increase ressources now. So 5 minutes
of downtime.

-- 
Michael Scherer
Sysadmin, Community Infrastructure and Platform, OSAS