Today we discovered that unattended-upgrades updated the mariadb package.
Start-Date: 2019-09-12 06:07:47 Commandline: /usr/bin/unattended-upgrade Upgrade: wmf-mariadb101:amd64 (10.1.39-1, 10.1.41-1) End-Date: 2019-09-12 06:08:11
We have been sitting in the pending service restart for a month, and today clouddb1001 was rebooted and the new version started. But the mysql_upgrade script wasn't run and the DB has been malfunctioning.
This upgrade needs to be done manually or the DB will malfunction. We need to prevent unattended-upgrades from doing this.