After upgrading MySQL/MariaDB, the service fails to start with the following error message in
[Note] InnoDB: Starting shutdown...
[ERROR] Plugin 'InnoDB' init function returned error.
[ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
[Note] Plugin 'FEEDBACK' is disabled.
[ERROR] Unknown/unsupported storage engine: InnoDB
The same error may appear during Plesk upgrade or update.
The mariadb/mysql service was not stopped properly after an upgrade.
- Connect to the Plesk server via SSH.
Stop the service properly using the command::
# mysqladmin -uadmin -p`cat /etc/psa/.psa.shadow` -h127.0.0.1 –protocol=tcp shutdown
Start the MySQL/MariaDB service:
# service mysql restart
# service mariadb restart