[Gluster-infra] Migrating Gerrit and Jenkins out of iWeb

Michael Scherer mscherer at redhat.com
Fri Feb 12 11:16:44 UTC 2016

Le mercredi 10 février 2016 à 19:18 +0530, Kaushal M a écrit :
> On Wed, Feb 10, 2016 at 1:53 PM, Michael Scherer <mscherer at redhat.com> wrote:
> > Le mercredi 10 février 2016 à 11:44 +0530, Kaushal M a écrit :
> >> On Sun, Feb 7, 2016 at 2:34 PM, Michael Scherer <mscherer at redhat.com> wrote:
> >> > Le samedi 06 février 2016 à 18:17 -0500, Vijay Bellur a écrit :
> >> >> I think starting around 0900 UTC on Friday of next week (12th Feb)
> >> >> should be possible. We should be done with 3.7.8 before that and can
> >> >> afford a bit of downtime then. In case any assistance is needed post the
> >> >> migration, we can have folks around the clock to help.
> >> >>
> >> >> If migration fails for an unforeseen reason, would we be able to
> >> >> rollback and maintain status quo?
> >> >
> >> > Yes. Worst case, I think people would just redo a few reviews or push
> >> > again patch.
> >> >
> >> > Also, since gerrit is critical, I wonder what is the support of gerrit
> >> > for slaves and replication.
> >>
> >> Michael are you okay with the time? If you are, I think we should
> >> announce the migration.
> >
> > I am ok.
> So as discussed in the community meeting, we will be announcing the
> migration and downtime. Vijay, you said you required the exact
> schedule? This is what I expect
> Friday 12th Feb 2016
> 0900 UTC : build.gluster.org and review.gluster.org are taken down and
> migration begins.
> <1-2 hrs?>: Michael copies over data onto the RH community infra and
> sets up the VMs.
> <? hrs>: The DNS records are updated, and some time is for it to propogate.
> <3hr?>: Verify everything is working well (I can help with this). We'd
> possibly need to run a regression job, so this will take longest I
> think.
> 1700UTC <or earlier>: We announce the finish of the migration and open
> the services back up. If migration failed, we bring the existing
> servers back on, and continue on.

So, for people wanting to know, the migration has started.

1) gerrit
gerrit seems to be ok, it has a new IP

people who used to have access there need to contact me so I can
explain/create required account on the new virt host.

the old VM is shutdown for now. I will make a backup copy of the disk.

2) jenkins

so the preparation of the migration didn't worked as well, so we have to
copy the VM when offline, and then prepare it later ( ie, import in
libvirt, adjust network, etc). So jenkins master is offline (sorry manu
for your tcpdump monitoring), we are making a copy of the disk that is
gonna take between 3 and 14h (most likely < 4h, but rsync estimation is
moving a lot), and then restart like before.

If anything is broken, please do not hesitate to tell us.

I will send a email to tell when people can start again to submit patch
and stuff :)

Michael Scherer
Sysadmin, Community Infrastructure and Platform, OSAS

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