Hi,

Toolforge's Harbor instance will briefly be down for a version upgrade from 2.5 to 2.9 this Wednesday at 8:00 UTC. https://phabricator.wikimedia.org/T346241 

This should not affect any tools that are not using the new build service, nor any tools that are already running. https://wikitech.wikimedia.org/wiki/Help:Toolforge/Build_Service 

If you are using the builds service, you will not be able to run any new builds, or start a job or a webservice from an image built with the build service while Harbor is down.

We will send an update before starting maintenance work, and once everything is back up and running.