i started from perfect server debian 7.6 and then upgraded successfully to deb 8.1. Now i am trying to upgrade to debian 9 following your https://www.howtoforge.com/tutorial/how-to-upgrade-debian-8-jessie-to-9-stretch/ all goes smoothly until during dist-upgrade i get this error: Errors were encountered while processing: mariadb-server-10.1 default-mysql-server mysql-server E: Sub-process /usr/bin/dpkg returned an error code (1) i tryied to use flag -f to resolve, but still in this error. any ideas?
Do the upgrade following Debian upgrade instructions, they are in the release notes. You might need to follow first the release notes for Debian 8 to make sure that upgrade is completed successfully. https://www.debian.org/releases/jessie/releasenotes
Most likely there are some settings in the mariadb config files that are not supported anymore by the new version. Check mysql logs and syslogs for further error messages.
yes i did the check and the upgrade to 8.1 is completed successfully and works fine. the problem is going to the 9, when dealing with the change from mysql to mariadb
Have you read chapter "2.2.4. MariaDB replaces MySQL" from https://www.debian.org/releases/str...s/ch-whats-new.en.html#mariadb-replaces-mysql
