Hello,

We will switch the CI services from contint1001 (eqiad) to contint2001
(codfw).  The maintenance is scheduled for Wednesday May 27th 9:30 CEST
(7:30 UTC).

The maintenance window is TWO HOURS, but the migration will most
probably be complete in a shorter time frame.

We previously tried the upgrade on May 11st which got rollbacked since I
have missed the java 8 to 11 upgrade which turned out to be a deal breaker.


During the maintenance, CI will not be available: no tests will be run
and events (code-review +2, rebase, new patchsets) will not be captured.

The beta cluster will NOT be automatically updated.

If a change has to happen on the configuration repositories:

* operations/puppet :
  locally run:
  - bundle update && bundle exec rake test
  or if you have Docker:
  - $puppet_dir/utils/run_ci_locally.sh

* operations/mediawiki-config :
  locally run: composer install && composer test

Then manually V+2 and Submit the change.

After the maintenance, Antoine will retrigger most events.

The related ticket is:  https://phabricator.wikimedia.org/T224591

Synchronization will happen on IRC in #wikimedia-operations

-- 
Antoine "hashar" Musso

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