We have a database running in MariaDB 5.5.60 and we want to upgrade it to the last 10.3.7 version.
However I'm looking at MariaDB knowledge base ( https://mariadb.com/kb/en/library/upgrading/ ) and I'm not sure if we can perform a direct in-place upgrade from 5.5 to 10.3, or we should perform a "step by step" upgrade (5.5 > 10.0 > 10.1 > 10.2 > 10.3 ).
All the documentation I see in the oficial MariaDB knowledge base seems to suggest to do a in-place step by step upgrade (furthermore, looks like a logical upgrade with mysqldump cannot be permormed from 10.2 to 10.3), however I've seen some other examples in blogs where a direct in-place upgrade from 5.5 to 10.2 seems possible ( http://www.linuxtopic.com/2017/10/upgrade-mariadb-5.2-to-10.2.html ).
Any help? Regards