The forwarded message is very relevant for wikimetrics. I have some basic backups but we really should migrate the service to production. There are a few things to fix before we do so, but if we don't want any interruptions or data loss, this *has* to happen.
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---------- Forwarded message ---------- From: "Andrew Bogott" abogott@wikimedia.org Date: Fri, Nov 15, 2013 at 2:29 PM Subject: [Wikitech-l] Labs datacenter migration To: "A list for announcements and discussion related to the Wikimedia Labs project." labs-l@lists.wikimedia.org, "Wikimedia developers" wikitech-l@lists.wikimedia.org
Almost a year ago, the Wikimedia Foundation migrated most of ourservices from our old data center in Tampa to the new one in Ashburn [1]. In the next couple of months Labs and Tool Labs will be following suit -- we expect to have everything moved to Ashburn by mid-January at the latest. This move will provide some immediate benefits (lower latency with production, quicker database replication) and many long-term benefits (better stability, happier Operations staff). We don't yet have a specific timeline for stages of the migration, but there are a few things you can do now to help us prepare for the change and to bolster your projects against possible disruption.
- Subscribe to Labs-l, and read it. [2] Labs-l is low-volume, and
future migration announcements may not be sent to other lists. 2) Tool Labs users: As long as your tools are properly managed by the grid engine and can survive stops and restarts, the migration will be quite painless. If your tools aren't, or can't... fix them :) 3) Labs project admins: Clean up old projects and instances. If you have instances that are no longer of interest, delete them. If you know of entire projects that are no longer in use, please contact me directly and I'll mop up. 4) Labs instance owners: Make sure that puppet is running properly on your instances. If '$sudo puppetd -tv' produces any red lines, then fix them or contact me for help with fixing. When instances move to the new data center we'll be relying on puppet to update location-specific settings, so instances without puppet may not survive the move. If your instance uses self-hosting puppet (via puppetmaster::self or role::puppet::self) then you will also need to update your local puppet repo. [3] 5) All Labs users: if you have valuable data residing on local instance storage, start backing it up to shared storage in /data/project. You should be doing this anyway -- no instance is safe from catastrophe, ever. 6) If your project or tool generates log files, have a look at purging old log data. The last time we did a data migration there was at least one terabyte-sized logfile that really gummed up the works. Updates about this change will be posted to this list as soon as we know about them. Any potential downtime will be announced well in advance. In the meantime, don't hesitate to ask questions about the above steps on IRC or the mailing list. -Andrew [1] https://blog.wikimedia.org/2013/01/19/wikimedia-sites-move-to-primary-data-c... [2] https://lists.wikimedia.org/mailman/listinfo/labs-l [3] https://wikitech.wikimedia.org/wiki/Help:Self-hosted_puppetmaster#FAQ _______________________________________________ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l