1.下载yum 源

wgethttps://repo.mysql.com//mysql57-community-release-el7-11.noarch.rpm

# 链接在这里找https://dev.mysql.com/downloads/repo/yum/

2.安装 yum 源

sudo rpm -Uvh mysql57-community-release-el7-11.noarch.rpm

3.显示所有的 GA 版本

yum repolist all | grep mysql

4.选择安装的版本

sudo yum-config-manager --disable mysql57-community

sudo yum-config-manager --enable mysql56-community

如果遇到sudo：yum-config-manager：找不到命令

yum -y install yum-utils

yum repolist enabled | grep mysql

5.安装

sudo yum install mysql-community-server

6.启动 Mysql Server

sudo service mysqld start

sudo systemctl start mysqld.service

sudo service mysqld status

sudo systemctl status mysqld.service

7.MySQL Server Initialization (for MySQL 5.7 only):

A superuser account 'root'@'localhost' is created. A password for the superuser is set and stored in the error log file. To reveal it, use the following command:

sudo grep 'temporary password' /var/log/mysqld.log

其他版本没有密码

8.修改密码

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');

可能会报一下错误，5.7版本必须包含大小写字母，数字和特殊字符

ERROR 1819 (HY000): Your password does not satisfy the current policy requirements