Error installing Mariadb 10.4. How to fix?

Question

ubuntu

Hello.
I can not install mariadb, I do everything according to the instructions .

spoiler

I’ll make a reservation right away, the system is clean (Ubuntu 18.04.3), I installed it today. After installed only php 7.3.

After completing these steps

sudo apt-get install software-properties-common
sudo apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xF1656F24C74CD1D8
sudo add-apt-repository 'deb [arch=amd64,arm64,ppc64el] http://mirror.realcompute.io/mariadb/repo/10.4/ubuntu bionic main'

sudo apt update
sudo apt install mariadb-server

Installation starts but fails with an error

Setting up mariadb-common (1:10.4.8+maria~bionic) ...
(Reading database ... 202092 files and directories currently installed.)
Preparing to unpack .../mariadb-server-10.4_1%3a10.4.8+maria~bionic_amd64.deb ...
Failed to stop mysql.service: Unit mysql.service not loaded.
'systemctl stop mysql' 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/mariadb-server-10.4_1%3a10.4.8+maria~bionic_amd64.deb (--unpack):
 new mariadb-server-10.4 package pre-installation script subprocess returned error exit status 1
Selecting previously unselected package libmysqlclient20:amd64.
Preparing to unpack .../libmysqlclient20_5.7.27-0ubuntu0.18.04.1_amd64.deb ...
Unpacking libmysqlclient20:amd64 (5.7.27-0ubuntu0.18.04.1) ...
Selecting previously unselected package libdbd-mysql-perl.
Preparing to unpack .../libdbd-mysql-perl_4.046-1_amd64.deb ...
Unpacking libdbd-mysql-perl (4.046-1) ...
Selecting previously unselected package libterm-readkey-perl.
Preparing to unpack .../libterm-readkey-perl_2.37-1build1_amd64.deb ...
Unpacking libterm-readkey-perl (2.37-1build1) ...
Selecting previously unselected package mariadb-server.
Preparing to unpack .../mariadb-server_1%3a10.4.8+maria~bionic_all.deb ...
Unpacking mariadb-server (1:10.4.8+maria~bionic) ...
Errors were encountered while processing:
 /var/cache/apt/archives/mariadb-server-10.4_1%3a10.4.8+maria~bionic_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

When trying to restart the installation (sudo apt install mariadb-server), the following warning appears:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
mariadb-server is already the newest version (1:10.4.8+maria~bionic).
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 mariadb-server : Depends: mariadb-server-10.4 (>= 1:10.4.8+maria~bionic) 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 run sudo apt --fix-broken install I get the following:

spoiler

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following additional packages will be installed:
  mariadb-server-10.4
Suggested packages:
  mailx mariadb-test tinyca
The following NEW packages will be installed:
  mariadb-server-10.4
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
Need to get 0 B/4 657 kB of archives.
After this operation, 77,9 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Preconfiguring packages ...
(Reading database ... 202590 files and directories currently installed.)
Preparing to unpack .../mariadb-server-10.4_1%3a10.4.8+maria~bionic_amd64.deb ...
Failed to stop mysql.service: Unit mysql.service not loaded.
'systemctl stop mysql' 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/mariadb-server-10.4_1%3a10.4.8+maria~bionic_amd64.deb (--unpack):
 new mariadb-server-10.4 package pre-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/mariadb-server-10.4_1%3a10.4.8+maria~bionic_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Tried deleting the repository and trying again - to no avail. I just can't figure out what it could be? Ubuntu installed in the minimum assembly) without additional. by ..
Even though the message says:

Failed to stop mysql.service: Unit mysql.service not loaded.
'systemctl stop mysql' returned 5

But mysql is not installed! When checked by the team: sudo systemctl status myslqI get Unit myslq.service could not be found.
Some kind of damn mysticism. Does anyone have any ideas how to fix it?

Answer 1

perhaps the package maintainers did not take into account that someone would install a custom version from scratch.
first try to put the version that comes in the distribution
and then put your 10.4 on top ,
well, that is.

sudo add-apt-repository -r 'deb [arch=amd64,arm64,ppc64el] http://mirror.realcompute.io/mariadb/repo/10.4/ubuntu bionic main'
apt update
apt install mariadb-server

then the same without the -r switch in the first command