Good work to everyone involved! -bawolff On 2013-01-22 6:53 PM, "Ct Woo" <ct...@wikimedia.org> 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 <ct...@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 <ct...@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@lists.wikimedia.org>, Development > > and Operations Engineers <engineer...@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@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikitech-l > _______________________________________________ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
