但是我不发出任何保证，它一定会正常工作！
1、初步说明
在本教程中使用的主机名与IP地址192.168.0.100 server1.example.com。这些设置可能会有所不同，所以你在适当情况下不得不更换他们。
2、安装的MySQL 5
首先，我们这样安装MySQL 5，终端输入命令：
yum install mysql mysql-server
然后创建MySQL系统启动链接（这样MySQL在系统启动时自动启动）启动MySQL服务器：
systemctl enable mysqld.service
systemctl start mysqld.service
现在，检查网络启用。运行
netstat -tap | grep mysql
如正常，会现实如下内容：
[root@server1 ~]# netstat -tap | grep mysql
tcp 0 0 *:mysql *:* LISTEN 1116/mysqld
[root@server1 ~]#
如果不是这样，编辑/etc/my.cnf文件并注释掉选项skip-networking：
vi /etc/my.cnf
[...]
#skip-networking
[...]
并重新启动MySQL服务器：
systemctl restart mysqld.service
运行
mysql_secure_installation
为根用户设置密码（否则任何人都可以访问你的MySQL数据库！）：
[root@server1 ~]# mysql_secure_installation
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!
In order to log into MySQL to secure it, we’ll need the current
password for the root user. If you’ve just installed MySQL, 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): <– ENTER
OK, successfully used password, moving on…
Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.
Set root password? [Y/n] <– ENTER
New password: <– yourrootsqlpassword
Re-enter new password: <– yourrootsqlpassword
Password updated successfully!
Reloading privilege tables..
… Success!
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] <– ENTER
… 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] <– ENTER
… 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] <– ENTER
- 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] <– ENTER
… Success!
Cleaning up…
All done! If you’ve completed all of the above steps, your MySQL
installation should now be secure.
