For me, in addition to the Package Manager messages mentioned by the OP, there's a message from AppArmor: Profile: /usr/sbin/mysqld Operation: open Name: /etc/mysql/mysql.conf.d/ Denied: r Logfile: /var/log/kern.log
Digging into the kernel log reveals these messages: Nov 12 13:12:33 brian-ubuntu-1 kernel: [854708.438037] type=1400 audit(1447294353.963:138): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/etc/mysql/mysql.conf.d/" pid=12892 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 Nov 12 13:12:33 brian-ubuntu-1 kernel: [854708.465075] type=1400 audit(1447294353.987:139): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/etc/mysql/mysql.conf.d/" pid=12909 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 Nov 12 13:12:34 brian-ubuntu-1 kernel: [854708.471298] type=1400 audit(1447294353.995:140): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/etc/mysql/mysql.conf.d/" pid=12912 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 Nov 12 13:12:34 brian-ubuntu-1 kernel: [854708.544657] type=1400 audit(1447294354.067:141): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/mysqld" pid=12950 comm="apparmor_parser" These are repeated a number of times, with different PIDs (and timestamps). Workaround: ------------------- Changing the apparmor level from "enforce" to "complain" for that profile allows the update to proceed without error: $ sudo aa-complain /usr/sbin/mysqld [sudo] password for username: Setting /usr/sbin/mysqld to complain mode. $ The same log entries occur, but this time they say: ' apparmor="ALLOWED" ' instead of DENIED. Obviously, you should change the apparmor level back again following the update: $ sudo aa-enforce /usr/sbin/mysqld [sudo] password for username: Setting /usr/sbin/mysqld to enforce mode. $ -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to mysql-5.6 in Ubuntu. https://bugs.launchpad.net/bugs/1512961 Title: package mysql-server-5.6 5.6.27-0ubuntu0.14.04.1 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-5.6/+bug/1512961/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
