At Mon May 3 15:58:28 UTC 2021 clouddb1013 pinged the ops channel and the WMCS email list about a memory alert.
PROBLEM - MariaDB memory on clouddb1013 is CRITICAL: CRIT Memory 95% used. Largest process: mysqld (6246) = 66.4% https://wikitech.wikimedia.org/wiki/MariaDB/troubleshooting
The databases are honestly under only light usage without lots of connections above normal. What to do.