[outages] Wikipedia Migration Complete

[Jay Ashworth]

They got it all done last night; cancelling tonight and tomorrow night's
windows.

Not bad for the #5 site on the web.

Cheers,
-- jra

----- Forwarded Message -----
> From: "Ct Woo" <ctwoo at wikimedia.org>
> To: "Wikimedia developers" <wikitech-l at lists.wikimedia.org>, "Wikimedia Engineering" <engineering at lists.wikimedia.org>
> Sent: Tuesday, January 22, 2013 5:53:42 PM
> Subject: [Wikitech-l] Completed ! Re: More Update on Ashburn data center switchover / migration – target date is week
> of 1/22/13
> All,
> 
> The switchover work is done.
> 
> The site was was available to readers throughout the migration work
> though
> it was in read-only mode for about 32 minutes, when Asher and Mark had
> to
> migrate the database masters over from Tampa to Ashburn.
> 
> We will cancel the reminding maintenance windows.
> 
> Thank you all for your patience and understanding.
> 
> Regards,
> CT Woo
> 
> On Sat, Jan 19, 2013 at 10:57 AM, Ct Woo <ctwoo at wikimedia.org> wrote:
> 
> >  All,
> >
> > We will be proceeding with the datacenter switchover plan this
> > coming
> > Tuesday (Jan 22, 2013), unless we discover some unexpected and
> > insurmountable issues in our tests between now and then.
> >
> > During the 8-hour migration window on the 22nd, 23rd and 24th (from
> > 17:00
> > UTC to 01:00 UTC hours / 9am to 5pm PST), there would be times
> > (lasting
> > about 30 minutes) where the site would be set to "read-only" mode,
> > to
> > facilitate master database switchovers from one datacenter to
> > another.
> > While the site should be available to readers, no new contents could
> > be
> > created, edited or uploaded.
> >
> > We are aware of the inconvenience and we have put together plans to
> > minimize such annoyances, e.g., automating much of the procedures,
> > mitigating known risks, and performing tests to identify issues
> > prior to
> > deployment. Given the scale and complexity of this migration, we do
> > realize
> > not all operational impact is predictable. Some users could
> > experience
> > intermittent site unavailability and/or performance issues
> > unfortunately.
> >
> > You can follow the migration on
> > chat.freenode.net<http://irc.freenode.net>
> > (and not irc.freenode.org as mentioned in previous email) in the
> > #wikimedia-operations channel.
> >
> > Thanks,
> > CT Woo
> >
> > ---------- Forwarded message ----------
> > From: Ct Woo <ctwoo at wikimedia.org>
> > Date: Fri, Jan 11, 2013 at 12:07 PM
> > Subject: Update on Ashburn data center switchover / migration –
> > target
> > date is week of 1/22/13
> > To: Wikimedia developers <wikitech-l at lists.wikimedia.org>,
> > Development
> > and Operations Engineers <engineering at lists.wikimedia.org>
> >
> >
> > All,
> >
> > The Migration team is in the last lap on completing the remaining
> > tasks to
> > ready our software stack and Ashburn infrastructure for the big
> > switchover day.
> >
> > Per my last
> > update,<http://lists.wikimedia.org/pipermail/wikitech-l/2012-October/063668.html>
> > with the Fundraising activity behind us now, the team has scheduled
> > the *week
> > of 22nd January*, 2013 to perform the switchover. We are going to
> > block a
> > 8-hour migration window on the *22nd, 23rd and 24**th*. During those
> > periods, *17:00 UTC to 01:00 UTC hours (9am to 5pm PST*), there will
> > be
> > intermittent blackouts and they will be treated as 'planned'
> > outages. You
> > can follow the migration on irc.freenode.org in the
> > #wikimedia-operations
> > channel.
> >
> > The team is putting the finishing touches to the last few tasks and
> > we
> > will make the final Go/No decision on 18th Jan, 2013. An update will
> > send
> > out then. For those interested in tracking the progress, the meeting
> > notes
> > are captured on this wikitech
> > page<http://wikitech.wikimedia.org/view/Eqiad_Migration_Planning#Improving_Switchover>
> > .
> >
> > *Please note that we will be restricting code deployment during that
> > week, allowing only emergency and critical ones only.*
> >
> > Thanks.
> >
> > CT Woo
> >
> >
> >
> >
> >
> _______________________________________________
> Wikitech-l mailing list
> Wikitech-l at lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/wikitech-l

-- 
Jay R. Ashworth                  Baylink                       jra at baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com         2000 Land Rover DII
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