Thank you for taking the time to file a bug report. While it looks like the post-install failed, but looks like the server is up and waiting:
2018-01-02T09:23:07.999499Z 0 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.7.20-0ubuntu0.16.04.1' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu) 2018-01-02T09:23:07.999518Z 0 [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '--disable-partition-engine-check' to skip this check. 2018-01-02T09:23:07.999525Z 0 [Note] Beginning of list of non-natively partitioned tables 2018-01-02T09:23:08.490012Z 0 [Note] End of list of non-natively partitioned tables 2018-01-02T09:23:08.535226Z 3 [Note] Access denied for user 'root'@'localhost' (using password: NO) Are you sure you are using the correct password and username that you setup during the install? Can you provide the output you are seeing when you try to connect and the output of /var/log/mysql/error.log after attempting? Since there is not enough information in your report to begin triage or to differentiate between a local configuration problem and a bug in Ubuntu, I am marking this bug as "Incomplete". We would be grateful if you would: provide a more complete description of the problem, explain why you believe this is a bug in Ubuntu rather than a problem specific to your system, and then change the bug status back to "New". For local configuration issues, you can find assistance here: http://www.ubuntu.com/support/community ** Changed in: mysql-5.7 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1740835 Title: package mysql-server-5.7 5.7.20-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1740835/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs