the Analytics team has been working with the SRE Data Persistence team during the last months to replace dbstore1002 with three brand new nodes, dbstore100[3-5]. We are moving from a single mysql instance (multi-source) to a multi-instance environment.

For more info please check:

* T210478 and related subtasks.

* https://wikitech.wikimedia.org/wiki/Analytics/Data_access#MariaDB_replicas

We are planning to decommission the dbstore1002 host (namely stopping mysql and shutting down the server) on Monday March 4th (EU morning). We have recently been following up with a lot of users to help them migrate to the new environment, so we are reasonably sure that this move should not heavily impact anybody, but if we have left some use case aside please let us know in https://phabricator.wikimedia.org/T215589. If we don't hear anything before the March 4th deadline we'll proceed with the host decommission maintenance.

Luca (on behalf of the Analytics team)