1.输入网址https://www.mysql.com/downloads/，进入downloads，选择Community

2.选择对应的版本和系统；

输入命令：wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.19-1.el6.x86_64.rpm-bundle.tar  下载

3. 解压缩

tar -xvf mysql-5.7.19-1.el6.x86_64.rpm-bundle.tar

4.rpm安装

rpm -ivh mysql-community-common-5.7.19-1.el6.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.19-1.el6.x86_64.rpm
rpm -ivh mysql-community-client-5.7.19-1.el6.x86_64.rpm
rpm -ivh mysql-community-server-5.7.19-1.el6.x86_64.rpm

5.安装成功后，修改my.cnf文件，添加user=root

vi /etc/my.cnf

6.初始化数据库

输入命令：mysqld --initialize-insecure

7.启动

输入命令：mysqld

这种启动方法

或者 nohup mysqld &  方式启动