title: Unable to install mysql-server on ubuntu 16.04
body: <p>This is the terminal output coming when i am trying to install the mysql-server using the command - </p>
  
  <pre><code>sudo apt-get install mysql-server
  </code></pre>
  
  <p>Terminal o/p</p>
  
  <pre><code>Setting up mysql-community-server (5.7.18-1ubuntu16.04) ...
  update-alternatives: using /etc/mysql/mysql.cnf to provide /etc/mysql/my.cnf (my.cnf) in auto mode
  AppArmor parser error for /etc/apparmor.d/usr.sbin.mysqld in /etc/apparmor.d/usr.sbin.mysqld at line 7: Could not open 'abstractions/mysql'
  Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" and "journalctl -xe" for details.
  invoke-rc.d: initscript mysql, action "start" failed.
  ● mysql.service - MySQL Community Server
     Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Mon 2017-06-12 14:23:11 IST; 7ms ago
    Process: 26677 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid (code=exited, status=1/FAILURE)
    Process: 26612 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
   Main PID: 23756 (code=exited, status=1/FAILURE)
  
  Jun 12 14:23:06 prat14k systemd[1]: Starting MySQL Community Server...
  Jun 12 14:23:07 prat14k mysql-systemd-start[26612]: AppArmor parser error for...
  Jun 12 14:23:07 prat14k mysqld[26677]: Initialization of mysqld failed: 0
  Jun 12 14:23:07 prat14k systemd[1]: mysql.service: Control process exited, ...=1
  Jun 12 14:23:11 prat14k systemd[1]: Failed to start MySQL Community Server.
  Jun 12 14:23:11 prat14k systemd[1]: mysql.service: Unit entered failed state.
  Jun 12 14:23:11 prat14k systemd[1]: mysql.service: Failed with result 'exit...'.
  Hint: Some lines were ellipsized, use -l to show in full.
  dpkg: error processing package mysql-community-server (--configure):
   subprocess installed post-installation script returned error exit status 1
  dpkg: dependency problems prevent configuration of mysql-server:
   mysql-server depends on mysql-community-server (= 5.7.18-1ubuntu16.04); however:
    Package mysql-community-server is not configured yet.
  
  dpkg: error processing package mysql-server (--configure):
   dependency problems - leaving unconfigured
  Processing triggers for libc-bin (2.23-0ubuntu7) ...
  No apport report written because the error message indicates its a followup error from a previous failure.
                            Processing triggers for systemd (229-4ubuntu17) ...
  Processing triggers for ureadahead (0.100.0-19) ...
  Errors were encountered while processing:
   mysql-community-server
   mysql-server
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  </code></pre>
  
  <p>i have tried about 5 times just removing,purging and all other commands, but cannot get it done.</p>
  
  <p>also,</p>
  
  <pre><code>systemctl mysql status
  </code></pre>
  
  <p>is showing</p>
  
  <pre><code>AppArmor parser error for /etc
  </code></pre>
  
  <p>Please help</p>