MariaDB 10.3 in Centos 7

Step 1 - Update System

yum update

Step 2 - Added Repository MariaDB

cat > /etc/yum.repos.d/mariadb.10.3.repo << EOF
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.3/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1
EOF

• Then update a system again

  yum update -y

Step 3 - Install MariaDB 10.3

yum install mariadb mariadb-server

Step 4 - Check Status

systemctl start mariadb
systemctl enable mariadb
systemctl status mariadb

Output :

$ systemctl start mariadb
$ systemctl enable mariadb
Created symlink from /etc/systemd/system/mysql.service to /usr/lib/systemd/system/mariadb.service.
Created symlink from /etc/systemd/system/mysqld.service to /usr/lib/systemd/system/mariadb.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service.
$ systemctl status mariadb
● mariadb.service - MariaDB 10.3.20 database server
   Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/mariadb.service.d
           └─migrated-from-my.cnf-settings.conf
   Active: active (running) since Sun 2019-12-01 21:45:53 EST; 17s ago
     Docs: man:mysqld(8)
           https://mariadb.com/kb/en/library/systemd/
 Main PID: 6410 (mysqld)
   Status: "Taking your SQL requests now..."
   CGroup: /system.slice/mariadb.service
           └─6410 /usr/sbin/mysqld

Dec 01 21:45:52 db-test mysqld[6410]: 2019-12-01 21:45:52 0 [Note] InnoDB: 10.3.20 started; log sequence numbe... id 21
Dec 01 21:45:52 db-test mysqld[6410]: 2019-12-01 21:45:52 0 [Note] InnoDB: Loading buffer pool(s) from /var/li...r_pool
Dec 01 21:45:52 db-test mysqld[6410]: 2019-12-01 21:45:52 0 [Note] InnoDB: Buffer pool(s) load completed at 19...:45:52
Dec 01 21:45:52 db-test mysqld[6410]: 2019-12-01 21:45:52 0 [Note] Plugin 'FEEDBACK' is disabled.
Dec 01 21:45:52 db-test mysqld[6410]: 2019-12-01 21:45:52 0 [Note] Server socket created on IP: '::'.
Dec 01 21:45:53 db-test mysqld[6410]: 2019-12-01 21:45:53 0 [Note] Reading of all Master_info entries succeeded
Dec 01 21:45:53 db-test mysqld[6410]: 2019-12-01 21:45:53 0 [Note] Added new Master_info '' to hash table
Dec 01 21:45:53 db-test mysqld[6410]: 2019-12-01 21:45:53 0 [Note] /usr/sbin/mysqld: ready for connections.
Dec 01 21:45:53 db-test mysqld[6410]: Version: '10.3.20-MariaDB'  socket: '/var/lib/mysql/mysql.sock'  port: 3...Server
Dec 01 21:45:53 db-test systemd[1]: Started MariaDB 10.3.20 database server.
Hint: Some lines were ellipsized, use -l to show in full.

Step 5 - Secure MariaDB Installation

Set Password root MariaDB

mysqladmin -u root password 'new-password'

Secure MySQL

mysql_secure_installation

Output :

$ mysqladmin -u root password 'new-password'
$ mysql_secure_installation

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!

In order to log into MariaDB to secure it, we'll need the current
password for the root user.  If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.

You already have a root password set, so you can safely answer 'n'.

Change the root password? [Y/n] n
 ... skipping.

By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.

Remove anonymous users? [Y/n] y
 ... Success!

Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] y
 ... Success!

By default, MariaDB comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] y
 ... Success!

Cleaning up...

All done!  If you've completed all of the above steps, your MariaDB
installation should now be secure.

Thanks for using MariaDB!

Step 6 - Testing

mysql -u root -p

Output :

$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 15
Server version: 10.3.20-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]>