SLES 15
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MariaDB : Install
2019/01/25
 
Install MariaDB to configure Database Server.
[1] Install and start MariaDB.
www:~ #
zypper -n install mariadb
www:~ #
vi /etc/my.cnf
# line 12: add

[mysqld]
character-set-server=utf8
www:~ #
systemctl start mariadb

www:~ #
systemctl enable mariadb

[2] Initial Settings for MariaDB.
www:~ #
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
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
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
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
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
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!

# connect to MariaDB with root

www:~ #
mysql -u root -p

Enter password:    
# password you set

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 17
Server version: 10.2.15-MariaDB openSUSE package

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

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

# show user list
MariaDB [(none)]> select user,host,password from mysql.user; 
+------+-----------+-------------------------------------------+
| user | host      | password                                  |
+------+-----------+-------------------------------------------+
| root | localhost | *xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx |
| root | 127.0.0.1 | *xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx |
| root | ::1       | *xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx |
+------+-----------+-------------------------------------------+
3 rows in set (0.00 sec)

# show database list
MariaDB [(none)]> show databases; 
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
+--------------------+
3 rows in set (0.00 sec)

MariaDB [(none)]> exit
Bye
[3] If Firewalld is running and you connect to MariaDB from remote Hosts, allow service like follows.
www:~ #
firewall-cmd --add-service=mysql --permanent

success
www:~ #
firewall-cmd --reload

success
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