Mysql installation error (unmet dependencies) - mysql

Question

I just wanted to re-install the mysql from my ubuntu. So i have purge the mysql but when i am trying to install it. It's show dependencies unmet error.
sudo apt-get install mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
mysql-server is already the newest version (5.7.22-0ubuntu0.17.10.1).
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
mysql-server : Depends: mysql-server-5.7 but it is not going to be installed
mysql-testsuite-5.7 : Depends: mysql-server-5.7 (= 5.7.22-0ubuntu0.17.10.1) but it is not going to be installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
When i try to update it shows:-
sudo apt-get update
Hit:1 http://archive.ubuntu.com/ubuntu artful InRelease
Hit:2 http://de.archive.ubuntu.com/ubuntu artful InRelease
Hit:3 http://security.ubuntu.com/ubuntu artful-security InRelease
Err:4 http://ppa.launchpad.net/canonical-kernel-team/pti/ubuntu artful InRelease
403 Forbidden
Ign:5 http://archive.ubuntu.com/ubuntu trusty InRelease
Hit:6 http://de.archive.ubuntu.com/ubuntu artful-updates InRelease
Hit:7 http://archive.ubuntu.com/ubuntu trusty Release
Hit:8 http://de.archive.ubuntu.com/ubuntu artful-backports InRelease
Hit:9 http://ppa.launchpad.net/mutlaqja/ppa/ubuntu artful InRelease
Reading package lists... Done
E: Failed to fetch http://ppa.launchpad.net/canonical-kernel-team/pti/ubuntu/dists/artful/InRelease 403 Forbidden
E: Some index files failed to download. They have been ignored, or old ones used instead.
When i try to fix dependency the problem we get is still the same:-
sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following additional packages will be installed:
mysql-server-5.7
Suggested packages:
mailx tinyca
The following NEW packages will be installed:
mysql-server-5.7
0 upgraded, 1 newly installed, 0 to remove and 105 not upgraded.
3 not fully installed or removed.
Need to get 3,189 kB of archives.
After this operation, 48.3 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://de.archive.ubuntu.com/ubuntu artful-updates/main amd64 mysql-server-5.7 amd64 5.7.22-0ubuntu0.17.10.1 [3,189 kB]
Fetched 3,189 kB in 0s (14.9 MB/s)
Preconfiguring packages ...
(Reading database ... 158292 files and directories currently installed.)
Preparing to unpack .../mysql-server-5.7_5.7.22-0ubuntu0.17.10.1_amd64.deb ...
grep: /etc/mysql/: No such file or directory
Failed to stop mysql.service: Unit mysql.service not loaded.
invoke-rc.d: initscript mysql, action "stop" failed.
invoke-rc.d returned 5
There is a MySQL server running, but we failed in our attempts to stop it.
Stop it yourself and try again!
dpkg: error processing archive /var/cache/apt/archives/mysql-server-5.7_5.7.22-0ubuntu0.17.10.1_amd64.deb (--unpack):
subprocess new pre-installation script returned error exit status 1
Errors were encountered while processing:
/var/cache/apt/archives/mysql-server-5.7_5.7.22-0ubuntu0.17.10.1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
none of the fix works for me.
Thanks in advance :)
Happy coding

Answer 1

Seems your system is stuck in the process of mysql. Restart your system and run the following code.
sudo apt-get update
sudo apt-get -f install
sudo apt purge -y mysql-server
sudo apt install -y mysql-server
Then you should be prompted by the mysql installer to provide a password and it should work just fine.