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

[Michael Scherer]

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 66.187.224.201

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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