We need to upgrade and restart s1 (enwiki) primary database masters as part of: T239791
The following wikis will go read-only:
enwiki
Impact: enwiki will go read-only for around 30 minutes (hopefully a lot less). Reads will not be impacted
When: Thu 21th May at 05:00 AM UTC
s1 primary db master: db1083
The read only window request is at: T251985