check mysql status on commandline
$ systemctl status mysql
● mysql.service - LSB: Start and stop the mysql database server daemon
Loaded: loaded (/etc/init.d/mysql; generated)
Active: active (running) since Tue 2021-05-18 13:34:02 CEST; 12s ago
Docs: man:systemd-sysv-generator(8)
Process: 127538 ExecStart=/etc/init.d/mysql start (code=exited, status=0/SUCCESS)
Tasks: 33 (limit: 9079)
Memory: 100.8M
CPU: 569ms
...