[Labs-admin] Labsdb migration (was: Report from ops meeting)

[Jaime Crespo]

Ok to me.

On Mon, Jan 30, 2017 at 7:54 PM, Yuvi Panda <yuvipanda at gmail.com> wrote:

> How about Feb 14? That gives us two weeks.
>
> On Mon, Jan 30, 2017 at 10:33 AM, Jaime Crespo <jcrespo at wikimedia.org>
> wrote:
> > As an admin, everything you should know about the upcoming labsdb1005
> > reimage:
> >
> > * We are ready (DBAs) to do this at any time, we just need to tell users
> in
> > advance of potential outages/degradations of service
> > * For 99% of the users, we will just switchover them transparently to the
> > slave (should not cause issues). As usual, if their application does not
> > retry to reconnect, there will be problems.
> > * For 3 users (databases), there will be full outage because they have
> such
> > a heavy usage that we cannot replicate them in real time. They were made
> > aware of this limitation months ago, so it should not come as a surprise:
> > https://phabricator.wikimedia.org/T127164 The users's databases are
> > documented at:
> > https://phabricator.wikimedia.org/diffusion/OPUP/browse/
> production/templates/mariadb/tools.my.cnf.erb;
> f21ce599fe626e7c96010a5d0335370ebe510ca7$65
> > * Data will be copied away, server will be reimaged, then data will be
> > copied back That normally takes 3 hours, but things could go wrong...
> > * People could complain for a 10.0 upgrade (?). But some people actually
> > complained already for the lack of 5.5 -> 10 upgrade.
> > https://phabricator.wikimedia.org/T138517#2796682
> > * On switch-back, again bad-programmed application may temporarily fail,
> but
> > good ones should just switch transparently; unavailable dbs should be
> > available again
> >
> > That should be enough background to schedule and send an email to users
> :-)
> >
> > ---------- Forwarded message ----------
> > From: Yuvi Panda <yuvipanda at gmail.com>
> > Date: Mon, Jan 30, 2017 at 7:14 PM
> > Subject: [Labs-admin] Report from ops meeting
> > To: Labs admin list for infrastructure and discussion
> > <labs-admin at lists.wikimedia.org>
> >
> >
> > 1. Faidon talking about ip space discussions wrt asia dc discussion,
> > and mentioned we might / should renumber labs IP space. Not sure about
> > more details.
> > 2. Ping on labsdb migration to Jessie
> > 3. Mid-year review of annual goals coming up, need status about OGE
> > migration
> >
> > That's it.
> >
> > --
> > Yuvi Panda T
> > http://yuvi.in/blog
> >
> > _______________________________________________
> > Labs-admin mailing list
> > Labs-admin at lists.wikimedia.org
> > https://lists.wikimedia.org/mailman/listinfo/labs-admin
> >
> >
> >
> > --
> > Jaime Crespo
> > <http://wikimedia.org>
> >
> > _______________________________________________
> > Labs-admin mailing list
> > Labs-admin at lists.wikimedia.org
> > https://lists.wikimedia.org/mailman/listinfo/labs-admin
> >
>
>
>
> --
> Yuvi Panda T
> http://yuvi.in/blog
>
> _______________________________________________
> Labs-admin mailing list
> Labs-admin at lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/labs-admin
>



-- 
Jaime Crespo
<http://wikimedia.org>
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