I have tried to install ISPConfig3 on Debian Jessie 8.1, and it couldnt connect to mySQL (mariaDB 10.1). So I CTRL+C to kill the install and I tried to manually login to mySQL, but I failed. It was complaining about the socket. So I purged and removed mariaDB and mySQL:

service mysql stop
apt-get --purge remove "mysql*"
mv /etc/mysql/ /tmp/mysql_configs/
apt-get remove --purge mysql*
apt-get autoremove
apt-get autoclean
service apache2 restart
apt-get update

Inside the source.list I have (added last two lines) (nano /etc/apt/sources.list):

deb http://debian.mirror.constant.com/ jessie main contrib non-free
deb-src http://debian.mirror.constant.com/ jessie main contrib non-free

deb http://security.debian.org/ jessie/updates main contrib non-free
deb-src http://security.debian.org/ jessie/updates main contrib non-free

deb [arch=amd64,i386] http://ftp.utexas.edu/mariadb/repo/10.0/debian jessie main
deb-src http://ftp.utexas.edu/mariadb/repo/10.0/debian jessie main

Then I followed the commands given by MariaDB:

sudo apt-get install software-properties-common
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xcbcb082a1bb943db
sudo apt-get update
sudo apt-get install mariadb-server

I get the following error:

Setting up mariadb-server-10.1 (10.1.9+maria-1~jessie) ...
2015-12-15 11:26:57 140472422967232 [Note] /usr/sbin/mysqld (mysqld 10.1.9-MariaDB-1~jessie) starting as process 12018 ...
2015-12-15 11:26:57 140472422967232 [Note] Using unique option prefix 'myisam_recover' is error-prone and can break in the future. Please use the full name 'myisam-recover-options' instead.
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Using mutexes to ref count buffer pool pages
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: The InnoDB memory heap is disabled
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Memory barrier is not used
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Compressed tables use zlib 1.2.8
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Using Linux native AIO
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Using CPU crc32 instructions
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Initializing buffer pool, size = 256.0M
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Completed initialization of buffer pool
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Highest supported file format is Barracuda.
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: 128 rollback segment(s) are active.
2015-12-15 11:26:57 140472422967232 [Note] InnoDB: Waiting for purge to start
2015-12-15 11:26:57 140472422967232 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.26-74.0 started; log sequence number 19615081045
2015-12-15 11:26:57 140471636559616 [Note] InnoDB: Dumping buffer pool(s) not yet started
2015-12-15 11:26:58 140472422967232 [Note] Plugin 'FEEDBACK' is disabled.
Job for mariadb.service failed. See 'systemctl status mariadb.service' and 'journalctl -xn' for details.
invoke-rc.d: initscript mysql, action "start" failed.
dpkg: error processing package mariadb-server-10.1 (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mariadb-server:
 mariadb-server depends on mariadb-server-10.1 (= 10.1.9+maria-1~jessie); however:
  Package mariadb-server-10.1 is not configured yet.

dpkg: error processing package mariadb-server (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)

How can I fix it?

7 Answers 7


Try the following:

apt-get remove --purge mysql*
apt-get remove --purge mysql
apt-get remove --purge mariadb
apt-get remove --purge mariadb*
apt-get --purge remove mariadb-server
apt-get --purge remove python-software-properties

Note: When prompted if you want to dump your current Databases, say no. But you can deconfigure the phpmyadmin database easily.

Install everything from fresh: Add the following to your /etc/apt/sources.list file:

deb [arch=amd64,i386] http://ftp.utexas.edu/mariadb/repo/10.1/debian jessie main
deb-src http://ftp.utexas.edu/mariadb/repo/10.1/debian jessie main


apt-get install python-software-properties
apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xcbcb082a1bb943db
apt-get install software-properties-common
apt-get install mariadb-server mariadb-client

Once your are done you should be able to run mysql -V and see something like:

mysql  Ver 15.1 Distrib 10.1.9-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2
  • apt-get remove --purge mysql will remove all existing databases too ? Oct 22, 2018 at 5:27
  • python-software-properties and software-properties-common have got nothing to do with mysql/maridab.
    – Nimrod
    Feb 6 at 5:26

I just got this error. For those new here.

The problem was from mysql database missing. Because I deleted the folders /var/lib/mysql/ and /etc/mysql/.

I just executed sudo mysql_install_db. Then start the MySql service sudo service mysql start. It should work.

If you get error when executed sudo mysql_install_db, execute sudo mkdir /etc/mysql/conf.d/. Then start again.


I had a very similar issue installing MariaDB server 10.0 on Ubuntu 16.04 upgraded from Ubuntu 14.04.

Setting up mariadb-server-10.0 (10.0.31-0ubuntu0.16.04.2) ...
dpkg: error processing package mariadb-server-10.0 (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mariadb-server:
 mariadb-server depends on mariadb-server-10.0 (>= 10.0.31-0ubuntu0.16.04.2); however:
  Package mariadb-server-10.0 is not configured yet.

dpkg: error processing package mariadb-server (--configure):
 dependency problems - leaving unconfigured

@user3502626's answer gave a hint using sudo mysql_install_db, which provided a new error:

/usr/sbin/mysqld: Can't read dir of '/etc/mysql/mariadb.conf.d/' (Errcode: 13 "Permission denied")

Searching for that error led to a Debian bug report that pointed the problem at AppArmor, and could be solved with:

$ echo -n "/usr/sbin/mysqld" | sudo tee /sys/kernel/security/apparmor/.remove
$ apt install -f
$ apparmor_parser -r /etc/apparmor.d/usr.sbin.mysqld

That installed MariaDB properly.


This situation could occur if the timeout for the init script was too short. For example, see MDEV-9382, a situation where the timeout was 30 seconds, but the server was taking 48 seconds to start.

On systems where systemd is not enabled/supported :

The timeout can be increased by setting MYSQLD_STARTUP_TIMEOUT either directly in the script or via the command line. In MariaDB 10.1.13 and later versions, the init script also sources /etc/default/mariadb, so it can also be used to set MYSQLD_STARTUP_TIMEOUT to persistently change the startup timeout. The default timeout has been increased from 30s to 60s in MariaDB 10.1.13.

On systems that support systemd:

The startup timeout can be increased by setting TimeoutStartSec systemd option. If there are some systemd settings to override or to set, create a file /etc/systemd/system/mariadb.service.d/XXXX.conf file where XXXX is something meaningful to you and place the configuration option(s) in an appropriate section, usually [Service]. If a systemd option is a list you may need to set this to empty before you set the replacement values, e.g.:



After any configuration change systemctl daemon-reload will be required to pick up the changes.

Source: https://mariadb.com/kb/en/mariadb/apt-upgrade-fails-but-the-database-is-running/


Do you have a .my.cnf file in your home directory? This was causing the error for me. I simply delete it and restart the installation process.

sudo apt-get dist-upgrade

..resolved this for me

Use this with caution because dist-upgrade may remove a package if there's a conflict between packages or dependencies that can't be satisfied. dist-upgrade will tell you the list of packages that it deems fit for installation and removal. Observe the list before making changes

Credits to Florian

  • It downloads something new, but not changes real version. Sep 21, 2018 at 12:39

This usually happens when you didn't remove mysql completely before trying to use mariadb. So try this.

sudo apt remove --purge mysql*
sudo apt remove --purge mysql
sudo apt remove --purge mariadb
sudo apt remove --purge mariadb*
sudo apt --purge remove mariadb-server

Then try re installing it again

sudo apt install mariadb-server mariadb-client

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.