There is an ongoing maintenance in the eqiad datacenter that involves changing
power connectors of the servers. More info in this phabricator task: T226778 .
The PDU upgrade could potentially leave our hypervisors without power briefly.
For some hypervisors, we plan to take the risks of leaving them running. For
some other hypervisors (those running important DBs in the form of virtual
machines) we will probably do a controlled shutdown before the operations to
ensure no data corruption happen in the databases.
The PDU upgrades will happen this very week (see phab task ) and it could
potentially affect every virtual machine we run in CloudVPS. This includes
In the case of power loss, we expect the disruptions to be very briefly and to
don't cause extended downtime in any case.
Please, let us know any issue you may find related to this operation.
Arturo Borrero Gonzalez
SRE / Wikimedia Cloud Services