Due to unavoidable network switch maintenance[0], some WMCS services
will be offline briefly tomorrow. The downtime will last for 20-30
minutes and take place sometime between 14:00 and 16:00 UTC.
Here is what to expect during the downtime:
* *Toolsdb will be unavailable and all queries will fail*
* Some of the wiki replica databases may be unavailable
* Some DNS servers will be offline; some services may fail to resolve
hosts, depending on their fallback logic
We anticipate a graceful recovery from this outage, but NFS is fickle so
we may need to reboot some or all VMs after the outage.
Sorry in advance for any inconvenience or upset emails that result from
this maintenance.
- Andrew + the WMCS team
[0]
https://phabricator.wikimedia.org/T330165