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On a Centos 8 server I'm trying to install MariaDB and MySQL.

I have used this command

dnf install mariadb-server mariadb -y

mysql-community-server-5.7.40-1.el7.x86_64 was installed after that.

Now, If i run

systemctl start mariadb

It says

Failed to start mariadb.service: Unit mariadb.service not found.

Along with php I have installed php-mysql module, so I have mysqld.service but its status is also showing following error

screenshot of systemctl status mysqld.service command

mysql -v shows following error

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

Additional Info:

Output of dnf repolist

repo id repo name
appstream CentOS Stream 8 - AppStream
baseos CentOS Stream 8 - BaseOS
epel Extra Packages for Enterprise Linux 8 - x86_64
epel-modular Extra Packages for Enterprise Linux Modular 8 - x86_64
epel-next Extra Packages for Enterprise Linux 8 - Next - x86_64
extras CentOS Stream 8 - Extras
extras-common CentOS Stream 8 - Extras common packages
mysql-connectors-community MySQL Connectors Community
mysql-tools-community MySQL Tools Community
mysql57-community MySQL 5.7 Community Server
remi-modular Remi's Modular repository for Enterprise Linux 8 - x86_64
remi-safe Safe Remi's RPM repository for Enterprise Linux 8 - x86_64

Output of command dnf info mariadb-server mysql-server mysql-community-server

Image: Output of command " dnf info mariadb-server mysql-server mysql-community-server"

Output of command systemctl start mysqld:

Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.

Output of command "systemctl status mysqld"

Note: I'm trying to setup an existing project which has its DB in mysql 5.7 so I want to install same version.

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  • Your screenshot shows no error, as far as I can tell. What's wrong with it? Commented Jan 9, 2023 at 1:34
  • I do not see that mysql-community-server is available in the CentOS 8 repositories. The minimum version of mysql-server for CentOS 8 should be v8.0 and not v5.7. Running the command dnf install mariadb-server mariadb should have installed the mariadb-server and mariadb packages with version 10.x and should not install mysql packages. Please add the output of dnf repolist and dnf info mariadb-server mysql-server mysql-community-server to your question to hopefully straighten things out. Commented Jan 9, 2023 at 19:41
  • @MarcusMüller error is this "ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)". Commented Jan 10, 2023 at 8:02
  • @GracefulRestart I have added the output commands you mentioned on the post. Please review. Commented Jan 10, 2023 at 8:05
  • If you meant to install mysql-community-server v5.7 then I am not sure why you mentioned mariadb in your post. The error then is that your mysql server is not starting. To start mysql-community-server you would run systemctl start mysqld. If that does not work, then post the MySQL error logs. Commented Jan 11, 2023 at 7:23

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