Could not create the upgrade info file ‘/var/lib/mysql/mysql_upgrade_info’ in the MariaDB Servers datadir, errno: 13

Whilst doing this:

mysql_upgrade -uusername -ppassword

You get this:

Could not create the upgrade info file '/var/lib/mysql/mysql_upgrade_info' in the MariaDB Servers datadir, errno: 13

Solution:

Run the above command as root.

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