2016-04-07 11:19:20 INFO config-changed Setting up mysql-server-5.7 (5.7.11-0ubuntu4) ...
2016-04-07 11:19:20 INFO config-changed update-alternatives: using /etc/mysql/mysql.cnf to provide /etc/mysql/my.cnf (my.cnf) in auto mode
2016-04-07 11:19:21 INFO config-changed Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" and "journalctl -xe" for details.
2016-04-07 11:19:21 INFO config-changed invoke-rc.d: initscript mysql, action "start" failed.
2016-04-07 11:19:21 INFO config-changed dpkg: error processing package mysql-server-5.7 (--configure):
2016-04-07 11:19:21 INFO config-changed  subprocess installed post-installation script returned error exit status 1
2016-04-07 11:19:21 INFO config-changed Setting up libhtml-tagset-perl (3.20-2) ...
2016-04-07 11:19:21 INFO config-changed Setting up liburi-perl (1.71-1) ...
2016-04-07 11:19:21 INFO config-changed Setting up libhtml-parser-perl (3.72-1) ...
2016-04-07 11:19:21 INFO config-changed Setting up libcgi-pm-perl (4.26-1) ...
2016-04-07 11:19:21 INFO config-changed Setting up libfcgi-perl (0.77-1build1) ...
2016-04-07 11:19:21 INFO config-changed Setting up libcgi-fast-perl (1:2.10-1) ...
2016-04-07 11:19:21 INFO config-changed Setting up libencode-locale-perl (1.05-1) ...
2016-04-07 11:19:21 INFO config-changed Setting up libhtml-template-perl (2.95-2) ...
2016-04-07 11:19:21 INFO config-changed Setting up libtimedate-perl (2.3000-2) ...
2016-04-07 11:19:21 INFO config-changed Setting up libhttp-date-perl (6.02-1) ...
2016-04-07 11:19:21 INFO config-changed Setting up libio-html-perl (1.001-1) ...
2016-04-07 11:19:21 INFO config-changed Setting up liblwp-mediatypes-perl (6.02-1) ...
2016-04-07 11:19:21 INFO config-changed Setting up libhttp-message-perl (6.11-1) ...
2016-04-07 11:19:22 INFO config-changed No apport report written because the error message indicates its a followup error from a previous failure.
2016-04-07 11:19:22 INFO config-changed dpkg: dependency problems prevent configuration of mysql-server:
2016-04-07 11:19:22 INFO config-changed  mysql-server depends on mysql-server-5.7; however:
2016-04-07 11:19:22 INFO config-changed   Package mysql-server-5.7 is not configured yet.
2016-04-07 11:19:22 INFO config-changed 
2016-04-07 11:19:22 INFO config-changed dpkg: error processing package mysql-server (--configure):
2016-04-07 11:19:22 INFO config-changed  dependency problems - leaving unconfigured
2016-04-07 11:19:22 INFO config-changed Processing triggers for ureadahead (0.100.0-19) ...
2016-04-07 11:19:22 INFO config-changed Processing triggers for systemd (229-3ubuntu2) ...
2016-04-07 11:19:22 INFO config-changed Errors were encountered while processing:
2016-04-07 11:19:22 INFO config-changed  mysql-server-5.7
2016-04-07 11:19:22 INFO config-changed  mysql-server
2016-04-07 11:19:22 INFO config-changed E: Sub-process /usr/bin/dpkg returned an error code (1)
2016-04-07 11:19:22 INFO juju-log dataset size in bytes: 1241513984
2016-04-07 11:19:22 INFO config-changed Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" and "journalctl -xe" for details.
2016-04-07 11:19:22 INFO juju-log Restart failed, trying again
2016-04-07 11:19:22 INFO config-changed Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" and "journalctl -xe" for details.
2016-04-07 11:19:22 INFO config-changed Traceback (most recent call last):
2016-04-07 11:19:22 INFO config-changed   File "/var/lib/juju/agents/unit-mysql-0/charm/hooks/config-changed", line 400, in <module>
2016-04-07 11:19:22 INFO config-changed     check_call(['service', 'mysql', 'restart'])
2016-04-07 11:19:22 INFO config-changed   File "/usr/lib/python2.7/subprocess.py", line 541, in check_call
2016-04-07 11:19:22 INFO config-changed     raise CalledProcessError(retcode, cmd)
2016-04-07 11:19:22 INFO config-changed subprocess.CalledProcessError: Command '['service', 'mysql', 'restart']' returned non-zero exit status 1
2016-04-07 11:19:22 ERROR juju.worker.uniter.operation runhook.go:107 hook "config-changed" failed: exit status 1