package mysql-server-5.7 5.7.19-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Siddharth Kumar]

I'm not able to install/upgrade/update any of the new/old apps. I tried to change the root password of existing mysql and it somehow messed up the system.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: mysql-server-5.7 5.7.19-0ubuntu0.16.04.1
ProcVersionSignature: Ubuntu 4.4.0-97.120-generic 4.4.87
Uname: Linux 4.4.0-97-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
Date: Mon Oct 23 22:01:20 2017
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-06-22 (490 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Logs.var.log.daemon.log:

Logs.var.log.mysql.error.log:
MySQLConf.etc.mysql.conf.d.mysql.cnf: [mysql]
MySQLConf.etc.mysql.conf.d.mysqldump.cnf:
 [mysqldump]
 quick
 quote-names
 max_allowed_packet = 16M
MySQLConf.etc.mysql.mysql.conf.d.mysqld_safe_syslog.cnf:
 [mysqld_safe]
 syslog
MySQLVarLibDirListing: ['thelaks1_oprp', 'vyom_web', 'vyom_demand', 'performance_schema', 'fb_crawler', 'ib_buffer_pool', 'mailTracker', 'ib_logfile1', 'thelaks1_lakshya', 'ib_logfile0', 'thelaks1_grablinx', 'blog_strollup', 'debian-5.7.flag', 'vyom_crm_ext', 'ibdata1', 'hello', 'email', 'sendy', 'mysql_upgrade_info', 'auto.cnf', 'strollup', 'sys', 'vyom_supply', 'mysql', 'vyom_networkpartner']
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.4.0-97-generic root=UUID=157c370f-5188-40ee-aed2-2b18e601f569 ro quiet splash
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.24
SourcePackage: mysql-5.7
Title: package mysql-server-5.7 5.7.19-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.init.mysql.conf: [modified]
modified.conffile..etc.mysql.mysql.conf.d.mysqld.cnf: [modified]
mtime.conffile..etc.init.mysql.conf: 2017-06-07T15:22:07.357210
mtime.conffile..etc.mysql.mysql.conf.d.mysqld.cnf: 2016-06-24T10:43:56.071723
upstart.mysql.override: manual

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1722007, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.