Thank you for taking the time to file a bug report. The mysql-server postinst script is failing because of this:
/var/lib/dpkg/info/mysql-server-8.0.postinst: line 191: /usr/share/mysql-common/configure-symlinks: No such file or directory The /usr/share/mysql-common/configure-symlinks file is provided by mysql-common. Checking the list of package you have I found this: mysql-client-8.0 8.0.26-0ubuntu0.20.04.2 mysql-client-core-8.0 8.0.26-0ubuntu0.20.04.2 mysql-common 8.0.13-1ubuntu16.04 [origin: unknown] mysql-server-core-8.0 8.0.26-0ubuntu0.20.04.2 Your mysql-common package was not installed from the Ubuntu archive. In a system running Ubuntu Focal you need the following: $ dpkg -l | grep mysql ii mysql-client-8.0 8.0.26-0ubuntu0.20.04.2 amd64 MySQL database client binaries ii mysql-client-core-8.0 8.0.26-0ubuntu0.20.04.2 amd64 MySQL database core client binaries ii mysql-common 5.8+1.0.5ubuntu2 all MySQL database common files, e.g. /etc/mysql/my.cnf ii mysql-server 8.0.26-0ubuntu0.20.04.2 all MySQL database server (metapackage depending on the latest version) ii mysql-server-8.0 8.0.26-0ubuntu0.20.04.2 amd64 MySQL database server binaries and system database setup ii mysql-server-core-8.0 8.0.26-0ubuntu0.20.04.2 amd64 MySQL database server binaries Note that you'll need to remove your mysql-common package manually because its version is greater than the version in the Ubuntu archive and apt will not override it. With the correct version of mysql-common you should be able to install mysql-server. Since it seems likely to me that this is a local configuration problem, rather than a bug in Ubuntu, I am marking this bug as 'Incomplete'. However, if you believe that this is really a bug in Ubuntu, then we would be grateful if you would provide a more complete description of the problem with steps to reproduce, 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-8.0 (Ubuntu) Status: New => Incomplete ** Summary changed: - package mysql-server-8.0 8.0.26-0ubuntu0.20.04.2 failed to install/upgrade: installed mysql-server-8.0 package post-installation script subprocess returned error exit status 127 + mysql-server postinst failure: /usr/share/mysql-common/configure-symlinks: No such file or directory -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1938599 Title: mysql-server postinst failure: /usr/share/mysql-common/configure- symlinks: No such file or directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-8.0/+bug/1938599/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs