Joubu: I did it. It shows: An ExecStart= process belonging to unit mariadb.service has exited. ░░ ░░ The process' exit code is 'exited' and its exit status is 1. Aug 04 09:27:13 library systemd[1]: mariadb.service: Failed with result 'exit-c> ░░ Subject: Unit failed ░░ Defined-By: systemd ░░ Support: https://www.debian.org/support ░░ ░░ The unit mariadb.service has entered the 'failed' state with result 'exit-co> Aug 04 09:27:13 library systemd[1]: Failed to start mariadb.service - MariaDB 1> ░░ Subject: A start job for unit mariadb.service has failed ░░ Defined-By: systemd ░░ Support: https://www.debian.org/support ░░ ░░ A start job for unit mariadb.service has finished with a failure. ░░ ░░ The job identifier is 291585 and the job result is failed. Aug 04 09:27:13 library systemd[1]: mariadb.service: Consumed 1.693s CPU time. ░░ Subject: Resources consumed by unit runtime ░░ Defined-By: systemd ░░ Support: https://www.debian.org/support ░░ ░░ The unit mariadb.service completed and consumed the indicated resources.