On Apr 1, 2019, at 1:18 PM, Brooke Storm &lt;bstorm(a)wikimedia.org <mailto:bstorm@wikimedia.org>> wrote: The OSM postgresql database service, usually accessed via osmdb.eqiad.wmnet is moving to a new server. Currently the server is a read replica of the primary database, and should be accessible via the DNS alias of osm.db.svc.eqiad.wmflabs. As detailed here https://phabricator.wikimedia.org/T219652 <https://phabricator.wikimedia.org/T219652>, osmdb.eqiad.wmnet will be changed to point at the osm.db.svc.eqiad.wmflabs. For a brief time that will make those tables that aren’t always read-only also read-only while DNS updates. Then the replica will be promoted to the master, and the rest of the steps should not cause any impact. Brooke Storm Operations Engineer Wikimedia Cloud Services bstorm(a)wikimedia.org <mailto:bstorm@wikimedia.org> IRC: bstorm_