Cent OS 6 MYSQL 2分でインストール！！

[root@mail1 ~]# yum install mysql mysql-server

[root@mail1 ~]# chkconfig --levels 235 mysqld on

[root@mail1 ~]# /etc/init.d/mysqld start

[root@mail1 ~]# mysql_secure_installation

Enter current password for root (enter for none): 何もしないでエンター

Set root password? [Y/n]
New password:            ←　新しいパスワードを入力
Re-enter new password:   ←　新しいパスワードを入力(確認)

By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL 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, MySQL 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] ←　空ENTER
 ... Success!

Cleaning up...



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

Thanks for using MySQL!

[root@mail1 ~]# mysql -u root -p      ←先ほど設定したroot パスワードでmysqlにログインできるか確認。
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 5.1.69 Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

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

mysql>
mysql>exit

Bye
[root@mail1 ~]#