Hi there! Next Monday 2019-10-28 @ 14:30 UTC we will do a maintenance operation on Toolforge which consists in rebuilding the main front proxy [0] used to serve webservices. We expect this to be done within a 30 minutes window. The operation consists on replacing the old virtual machines supporting the proxy (currently running Debian Jessie) with more modern instances running Debian Buster. Both Grid/Kubernetes backends are affected by this change. We don't expect a lot of service downtime, but there is a key point in the operation which is migrating data stored in Redis which can be tricky. The o Examples of things affected by this change: * Browsing Toolforge webservices * Browsing to https://tools.wmflabs.org/<toolname> * Browsing to https://tools.wmflabs.org/admin/ (Toolforge landing page) * Browsing PAWS (to some extent, since it shares part of the toolforge proxy) Example of things not affected by this change: * webservices backend operations * SSH bastions * grid queues, grid jobs * wiki-replicas, toolsdb * other CloudVPS projects regards. [0] https://phabricator.wikimedia.org/T235627 -- Arturo Borrero Gonzalez SRE / Wikimedia Cloud Services Wikimedia Foundation