Hi Paride, based on my experience and on what I read on these bug reports, the steps to repro are:
- have an Ubuntu system with mysql-server-5.7 version 5.7.30 installed - systemctl stop mysql - systemctl disable mysql - apt install mysql-server-5.7 (in order to upgrade it to the latest version, which is 5.7.31 now) => postinst scripts fail with the mentioned error: mysql_upgrade: Got error: 2002: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) while connecting to the MySQL server Workaround: - systemctl enable mysql (<= important!) - systemctl start mysql - apt install mysql-server-5.7 Anyway, there's a thorough analysis here and, if I understand this LP page, the fix was delivered to 16.09 (and hence inherited from subsequent releases) but not to 16.04, correct me if I'm wrong. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1592669 Title: postinst fails when daemon is not running (or is disabled by policy- rc.d) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1592669/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
