● mysqld.service - MariaDB database server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: activating (start-post) (Result: exit-code) since Sat 2015-07-25 10:31:53 AEST; 49s ago
  Process: 6045 ExecStart=/usr/bin/mysqld --pid-file=/run/mysqld/mysqld.pid (code=exited, status=1/FAILURE)
 Main PID: 6045 (code=exited, status=1/FAILURE);         : 6046 (mysqld-post)
   CGroup: /system.slice/mysqld.service
           └─control
             ├─6046 /bin/sh /usr/bin/mysqld-post
             └─6389 sleep 1

Jul 25 10:31:53 fusion809-vbox systemd[1]: Starting MariaDB database serv....
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: 150725 10:31:53 [Note] /usr/....
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: 150725 10:31:53 [Warning] Ca...t
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: [96B blob data]
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: 150725 10:31:53 [ERROR] Aborting
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: 150725 10:31:53 [Note] /usr/...e
Jul 25 10:31:53 fusion809-vbox systemd[1]: mysqld.service: Main process e...E
Hint: Some lines were ellipsized, use -l to show in full.
[/code]

whilst running:
[code]journalctl -xe[/code]

gives:

[code]
Jul 25 10:33:23 fusion809-vbox systemd[1]: Failed to start MariaDB database s
-- Subject: Unit mysqld.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has failed.
--
-- The result is failed.
Jul 25 10:33:23 fusion809-vbox systemd[1]: mysqld.service: Unit entered faile
Jul 25 10:33:23 fusion809-vbox systemd[1]: mysqld.service: Failed with result
Jul 25 10:33:23 fusion809-vbox systemd[1]: mysqld.service: Service hold-off t
Jul 25 10:33:23 fusion809-vbox systemd[1]: Starting MariaDB database server..
-- Subject: Unit mysqld.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has begun starting up.
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: 150725 10:33:23 [Note] /usr/bin/
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: 150725 10:33:23 [Warning] Can't
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: [96B blob data]
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: 150725 10:33:23 [ERROR] Aborting
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: 150725 10:33:23 [Note] /usr/bin/
Jul 25 10:33:23 fusion809-vbox systemd[1]: mysqld.service: Main process exite
 ESCOD
Jul 25 10:28:51 fusion809-vbox mysqld[4690]: 150725 10:28:51 [Note] /usr/bin/
Jul 25 10:28:51 fusion809-vbox systemd[1]: mysqld.service: Main process exite
Jul 25 10:30:21 fusion809-vbox systemd[1]: mysqld.service: Start-post operati
Jul 25 10:30:21 fusion809-vbox polkitd[379]: Unregistered Authentication Agen
Jul 25 10:30:21 fusion809-vbox systemd[1]: Failed to start MariaDB database s
-- Subject: Unit mysqld.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has failed.
--
-- The result is failed.
Jul 25 10:30:21 fusion809-vbox systemd[1]: mysqld.service: Unit entered faile
Jul 25 10:30:21 fusion809-vbox systemd[1]: mysqld.service: Failed with result
Jul 25 10:30:21 fusion809-vbox polkitd[379]: Registered Authentication Agent
Jul 25 10:30:22 fusion809-vbox systemd[1]: mysqld.service: Service hold-off t
Jul 25 10:30:22 fusion809-vbox systemd[1]: Reloading.
Jul 25 10:30:22 fusion809-vbox systemd[1]: Started CUPS Scheduler.
-- Subject: Unit org.cups.cupsd.service has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit org.cups.cupsd.service has finished starting up.
--
-- The start-up result is done.
Jul 25 10:30:22 fusion809-vbox polkitd[379]: Unregistered Authentication Agen
Jul 25 10:30:22 fusion809-vbox systemd[1]: Starting MariaDB database server..
-- Subject: Unit mysqld.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has begun starting up.
Jul 25 10:30:22 fusion809-vbox mysqld[5412]: 150725 10:30:22 [Note] /usr/bin/
Jul 25 10:30:22 fusion809-vbox mysqld[5412]: 150725 10:30:22 [Warning] Can't
Jul 25 10:30:22 fusion809-vbox mysqld[5412]: [96B blob data]
Jul 25 10:30:22 fusion809-vbox mysqld[5412]: 150725 10:30:22 [ERROR] Aborting
Jul 25 10:30:22 fusion809-vbox mysqld[5412]: 150725 10:30:22 [Note] /usr/bin/
Jul 25 10:30:22 fusion809-vbox systemd[1]: mysqld.service: Main process exite
Jul 25 10:31:52 fusion809-vbox systemd[1]: mysqld.service: Start-post operati
Jul 25 10:31:52 fusion809-vbox systemd[1]: Failed to start MariaDB database s
-- Subject: Unit mysqld.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has failed.
--
-- The result is failed.
Jul 25 10:31:52 fusion809-vbox systemd[1]: mysqld.service: Unit entered faile
Jul 25 10:31:52 fusion809-vbox systemd[1]: mysqld.service: Failed with result
Jul 25 10:31:53 fusion809-vbox systemd[1]: mysqld.service: Service hold-off t
Jul 25 10:31:53 fusion809-vbox systemd[1]: Starting MariaDB database server..
-- Subject: Unit mysqld.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has begun starting up.
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: 150725 10:31:53 [Note] /usr/bin/
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: 150725 10:31:53 [Warning] Can't
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: [96B blob data]
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: 150725 10:31:53 [ERROR] Aborting
Jul 25 10:31:53 fusion809-vbox mysqld[6045]: 150725 10:31:53 [Note] /usr/bin/
Jul 25 10:31:53 fusion809-vbox systemd[1]: mysqld.service: Main process exite
Jul 25 10:33:23 fusion809-vbox systemd[1]: mysqld.service: Start-post operati
Jul 25 10:33:23 fusion809-vbox systemd[1]: Failed to start MariaDB database s
-- Subject: Unit mysqld.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has failed.
--
-- The result is failed.
Jul 25 10:33:23 fusion809-vbox systemd[1]: mysqld.service: Unit entered faile
Jul 25 10:33:23 fusion809-vbox systemd[1]: mysqld.service: Failed with result
Jul 25 10:33:23 fusion809-vbox systemd[1]: mysqld.service: Service hold-off t
Jul 25 10:33:23 fusion809-vbox systemd[1]: Starting MariaDB database server..
-- Subject: Unit mysqld.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has begun starting up.
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: 150725 10:33:23 [Note] /usr/bin/
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: 150725 10:33:23 [Warning] Can't
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: [96B blob data]
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: 150725 10:33:23 [ERROR] Aborting
Jul 25 10:33:23 fusion809-vbox mysqld[6677]: 150725 10:33:23 [Note] /usr/bin/
Jul 25 10:33:23 fusion809-vbox systemd[1]: mysqld.service: Main process exite