[Bug 1689006] Re: package mysql-server-5.7 5.7.18-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Nish Aravamudan]

>From DpkgTerminalLog:

Configuration file '/etc/mysql/mysql.conf.d/mysqld.cnf'
 ==> Modified (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : start a shell to examine the situation
 The default action is to keep your current version.
*** mysqld.cnf (Y/I/N/O/D/Z) [default=N] ? Y N
invoke-rc.d: Unit mysql.service is masked
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)
ERROR: Unable to start MySQL server:
2017-05-07T04:42:35.280297Z 0 [ERROR] unknown variable 'myisam-recover=BACKUP'
2017-05-07T04:42:35.286070Z 0 [ERROR] Aborting
Please take a look at https://wiki.debian.org/Teams/MySQL/FAQ for tips on fixing common upgrade issues.
Once the problem is resolved, run apt-get --fix-broken install to retry.
dpkg: error processing package mysql-server-5.7 (--configure):
 subprocess installed post-installation script returned error exit status 1

Did you try the suggested wiki page?

** Changed in: mysql-5.7 (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1689006

Title:
  package mysql-server-5.7 5.7.18-0ubuntu0.16.04.1 failed to
  install/upgrade: subprocess installed post-installation script
  returned error exit status 1

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