Hi all,
We'll be migrating all Beta Cluster databases to new Debian jessie based instances next Tuesday, September 15, from 1500-1700 UTC. All Beta Cluster wikis will be in read-only mode during the migration.
Please contact someone from WMF Release Engineering (#wikimedia-releng on freenode IRC) if you have any questions or concerns regarding this maintenance operation, or refer to the Phabricator task (T138778).
https://phabricator.wikimedia.org/T138778
Thanks! Dan