下载安装包
登录https://dev.mysql.com/downloads/mysql/ 选择需要安装的包


查看虚拟机是否已经安装mysql
rpm -qa |grep mysql

解压包
查看文件
file mysql-5.7.20-1.el7.x86_64.rpm-bundle.tar

查看压缩包里的文件
tar -tf mysql-5.7.20-1.el7.x86_64.rpm-bundle.tar

解压
mkdir -p /usr/src/mysql
tar -xvf mysql-5.7.20-1.el7.x86_64.rpm-bundle.tar -C /usr/src/mysql/

安装
rpm -ivh MySQL-client-5.6.38-1.el7.x86_64.rpm

为了避免安装过程中出现依赖问题也可以用yum的方式安装
yum install MySQL-server-5.6.38-1.el7.x86_64.rpm

密码存放位置‘/root/.mysql_secret‘.

cat /root/.mysql_secret

启动MySQL
systemctl enable mysql
systemctl start mysql
systemctl status mysql

初始化MySQL
mysql_secure_installation
.

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!
[root@mysqlrpm ~]# cat /root/.mysql_secret

The random password set for the root user at Sat Jan 13 17:33:06 2018 (local time): 0feC3z6vS4RuU6jB

[root@mysqlrpm ~]# 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):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
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] y
New password:
Re-enter new password:
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] 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] y
... Success!

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

Thanks for using MySQL!

Cleaning up...

用户登录
mysql -uroot -pP@ssw0rd