package mysql-server-5.7 5.7.21-1ubuntu1 failed to install/upgrade: installed mysql-server-5.7 package post-installation script subprocess returned error exit status 1

[Cigi Sebastine]

mysql installation failed

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: mysql-server-5.7 5.7.21-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
Date: Mon Apr 15 16:32:39 2019
ErrorMessage: installed mysql-server-5.7 package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2018-04-13 (367 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Logs.var.log.daemon.log:

Logs.var.log.mysql.error.log:
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.15.0-29-generic root=UUID=b9d09161-c9c4-49dd-9555-6d3965391d20 ro quiet splash vt.handoff=1
Python3Details: /usr/bin/python3.6, Python 3.6.7, python3-minimal, 3.6.7-1~18.04
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.3
SourcePackage: mysql-5.7
Title: package mysql-server-5.7 5.7.21-1ubuntu1 failed to install/upgrade: installed mysql-server-5.7 package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Andreas Hasenack (ahasenack)]

Thanks for filing this bug in Ubuntu.

This is the error that was reported:
ERROR: Unable to start MySQL server:
mysqld: Can't read dir of '/etc/mysql/conf.d/' (Errcode: 2 - No such file or directory)

That is a very core directory of mysql, and it shouldn't have gone missing. Maybe you removed it while attempting to purge packages from your system before trying a reinstall, and something broke during that process?

I'll mark this bug as incomplete, bug if you can provide us with steps on how to reproduce this problem, please switch the state back to "new".

[Launchpad Janitor (janitor)]

[Expired for mysql-5.7 (Ubuntu) because there has been no activity for 60 days.]