I've tried all options mentioned above and still facing the problem.
This happened after upgrade from 14.04 to 16.04.
Tried: Remove all .cnf files from /etc/mysql and then did "apt purge
mysql*" and then "apt install mysql-server".
Getting following error:
Setting up mysql-server-5.7 (5.7.13-0ubuntu0.16.04.2) ...
update-alternatives: using /etc/mysql/mysql.cnf to provide /etc/mysql/my.cnf
(my.cnf) in auto mode
Renaming removed key_buffer and myisam-recover options (if present)
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.
dpkg: error processing package mysql-server-5.7 (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-5.7; however:
Package mysql-server-5.7 is not configured yet.
dpkg: error processing package mysql-server (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup
error from a previous failure.
Processing triggers for systemd (229-4ubuntu7) ...
Processing triggers for ureadahead (0.100.0-19) ...
Errors were encountered while processing:
mysql-server-5.7
mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@foss:/# systemctl status mysql.service
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset:
enabled)
Active: activating (start-post) (Result: exit-code) since Tue 2016-09-13
17:06:16 IST; 22s ago
Process: 6850 ExecStart=/usr/sbin/mysqld (code=exited, status=1/FAILURE)
Process: 6847 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre
(code=exited, status=0/SUCCESS)
Main PID: 6850 (code=exited, status=1/FAILURE); : 6851
(mysql-systemd-s)
CGroup: /system.slice/mysql.service
└─control
├─6851 /bin/bash /usr/share/mysql/mysql-systemd-start post
└─6925 sleep 1
Sep 13 17:06:16 foss.coep.org.in systemd[1]: Starting MySQL Community Server...
Sep 13 17:06:18 foss.coep.org.in systemd[1]: mysql.service: Main process
exited, code=exited, status=1/FAILURE
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https://bugs.launchpad.net/bugs/1573279
Title:
package mysql-server-5.7 5.7.11-0ubuntu6 failed to install/upgrade:
subprocess installed post-installation script returned error exit
status 1 during release upgrade
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https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1573279/+subscriptions
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