[Bug 1435080] Re: mysql-server upgrade hangs dpkg --reconfigure

[Kristian Erik Hermansen]

*** This bug is a duplicate of bug 1421303 ***
    https://bugs.launchpad.net/bugs/1421303

Ultimately, apparmor is the culprit. I noticed that the file
/etc/apparmor.d/usr.sbin.mysqld has a line:

  /run/mysqld/mysqld.sock r,

Which means that the socket file will never be able to be written the
first time, which seems a bug to me. I made it this instead:

  /run/mysqld/mysqld.sock rw,

Works great now. I made a bunch of changes and many files have been
edited. I think there may have been some other lines I edited, like:

  /run/mysqld/mysqld.pid rw,
  /var/log/mysql.log rw,
  /var/log/mysql.err rw,
  /etc/mysql/mysql.conf.d/** rw,
  /etc/mysql/mysql.cnf rw,
  /etc/mysql/my.cnf rw,

If you can't figure out, then temporarily disable apparmor and change
the apparmor profile until you get it working.

/etc/init.d/apparmor stop

Then mysql should work again:

/etc/init.d/mysql restart

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https://bugs.launchpad.net/bugs/1435080

Title:
  mysql-server upgrade hangs dpkg --reconfigure

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