How to install MariaDB 10.3 in Debian 9

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How to install MariaDB 10.3 in Debian 9
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SystemMen - In this article, I will guide you step by step to install MariaDB 10.3 in Debian 9.

The installation steps have been tested in Debian 9 (Stretch).

Add MariaDB repository to the server

First, we need to install some dependencies.

# apt update && apt-get install software-properties-common dirmngr -y

Next, we add the key of the repository to verify.

# apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xF1656F24C74CD1D8

Then, type the following command to add repositor to the server.

# add-apt-repository 'deb [arch=amd64,i386,ppc64el] http://mariadb.nethub.com.hk/repo/10.3/debian stretch main'

Installing MariaDB 10.3

Type the following command to install MariaDB server.

# apt update && apt install mariadb-server -y

When installing, it will ask you to set a password for the root user of mysql. Repeat 3 times.

Configuring mariadb-server-10.3
-------------------------------

While not mandatory, it is highly recommended that you set a password for the MariaDB administrative "root" user.

If this field is left blank, the password will not be changed.

New password for the MariaDB "root" user:

You can press Enter to skip and can set the password later.

how-to-install-mariadb-10-3-in-debian-9 How to install MariaDB 10.3 in Debian 9
Install MariaDB 10.3 in Debian 9.

Enable and start mysql service.

# systemctl enable mysql && systemctl start mysql

Next, run this command to set up the original secure for mysql service.

# mysql_secure_installation

Implementation looks like this.

root@debian9:~# 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.

Set root password? [Y/n] y
New password: 
Re-enter new password: 
Password updated successfully!
Reloading privilege tables..
 ... Success!


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!

You can now login to mysql.

# mysql -u root -p

Conclusion

Above, I guide you to successfully install MariaDB 10.3 in Debian 9. If you only run mysql server local, not public for other machines, you do not need to open the port 3306. Otherwise, if you want to machine Other can be accessed remotely, you need to open port 3306 on the firewall.

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