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---------- Forwarded message ---------
From: Bryan Davis <bd808(a)wikimedia.org>
Date: Thu, Oct 19, 2017 at 2:46 AM
Subject: [Cloud] [Cloud-announce] Wiki Replica c1.labsdb and c3.labsdb to
be shutdown 2017-12-13
To: <cloud-announce(a)lists.wikimedia.org>
The labsdb1001.eqiad.wmnet (aka c1.labsdb) and labsdb1003.eqiad.wmnet
(aka c3.labsdb) servers are being shutdown and permanently removed
from service on Wednesday 2017-12-13.
TL;DR
* Change your tools and scripts to use:
- "*.web.db.svc.eqiad.wmflabs" (real-time response needed)
- "*.analytics.db.svc.eqiad.wmflabs" (batch jobs; long queries)
* Replace "*" with either a shard name (e.g. s1) or a wikidb name
(e.g. enwiki).
* The new servers do not support user created databases/tables because
replication can't be guaranteed. See T156869 and below for more
information.
* Migrate your user created tables to tools.db.svc.eqiad.wmflabs
(also known as tools.labsdb) and JOIN via application space logic
rather than in-process in the database.
What is changing?
* Week of 2017-10-30 to 2017-11-03 (exact date to be determined)
** Reboot labsdb1001.eqiad.wmnet (aka c1.labsdb) for kernel updates
** There is a possibility of catastrophic hardware failure in this
reboot. There will be no way to recover the server or the data it
currently hosts if that happens.
* Week of 2017-11-06 to 2017-11-10 (exact date to be determined)
** Reboot labsdb1003.eqiad.wmnet (aka c3.labsdb) for kernel updates
** There is a possibility of catastrophic hardware failure in this
reboot. There will be no way to recover the server or the data it
currently hosts if that happens.
* Wednesday 2017-12-13
* "*.labsdb" service names switched to point at
"*.web.db.svc.eqiad.wmflabs" equivalents.
* User created tables will not be allowed on the new servers
"c1.labsdb" and "c3.labsdb" point to.
* labsdb1001.eqiad.wmnet removed from service.
* labsdb1003.eqiad.wmnet removed from service.
Why are we doing this?
See <https://wikitech.wikimedia.org/wiki/Wiki_Replica_c1_and_c3_shutdown>
and <https://phabricator.wikimedia.org/T142807> for a more complete
description of the reasons for these changes.
Bryan (on behalf of the Wikimedia Cloud Services and DBA teams)
--
Bryan Davis Wikimedia Foundation <bd808(a)wikimedia.org>
[[m:User:BDavis_(WMF)]] Manager, Cloud Services Boise, ID USA
irc: bd808 v:415.839.6885 x6855
<(415)%20839-6885>
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