Question
Where can I find my MySQL/MariaDB upgrade logs?
Answer
The upgrade logs for MySQL and MariaDB are in the /var/cpanel/logs directory:
[05:30:45 root ~]cPs# ls -lah /var/cpanel/logs
total 28K
drwxr-xr-x 8 root root 4.0K Jun 4 03:33 .
drwx--x--x 128 root root 12K Jun 4 05:32 ..
drwxr-xr-x 2 root root 98 May 20 2016 mysql_upgrade.20160520-152345
drwxr-xr-x 2 root root 98 Jun 4 02:09 mysql_upgrade.20210604-020934
drwxr-xr-x 2 root root 98 Jun 4 03:33 mysql_upgrade.20210604-033335
[05:35:24 root ~]cPs#
Reference:
https://docs.cpanel.net/whm/sql-services/mysql-or-mariadb-upgrade/#mysql-upgrade-log