How to upgrade for MariaDB 5.5 to 10.1 and then to 10.3
You might encounter a situation (e.g. on AWS) where you have a new CentOS 7 server, but an old version of MariaDB 5.5 on the
mariadb-upgrade
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: