Hi there!
Today 2020-12-10 @ 15:30 UTC we will perform an upgrade of the Toolforge
kubernetes cluster [0].
We don't expect any major disruption of the service, but we detected in past
upgrades that some components might be restarted, causing brief interruptions of
network flows.
Given the amount of worker nodes we have, more than 50, the operation will take
us at least a couple of hours.
Tools maintainers: you don't have to do anything during this operation, but if
you detect anything weird please contact us either in the phabricator task [0],
in the IRC channel #wikimedia-cloud or in the cloud(a)lists.wikimedia.org [1]
mailing list.
regards.
[0]
https://phabricator.wikimedia.org/T263284
[1]
https://lists.wikimedia.org/mailman/listinfo/cloud
--
Arturo Borrero Gonzalez
SRE / Wikimedia Cloud Services
Wikimedia Foundation