So seamless. Well done! --tomasz
On Tue, Jan 22, 2013 at 2:53 PM, Ct Woo <[email protected]> wrote: > 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 <[email protected]> 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 <[email protected]> >> 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 <[email protected]>, Development >> and Operations Engineers <[email protected]> >> >> >> 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 >> >> >> >> >> > > _______________________________________________ > Engineering mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/engineering > > _______________________________________________ Wikitech-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikitech-l
