centos7中mysql的rpm包安装

下载

 wget https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm

rpm安装mysql57-community-release-el7-9.noarch.rpm

rpm -ivh mysql57-community-release-el7-9.noarch.rpm

更新包

yum update

安装mysql server 

yum install mysql-server

修改所属组/var/lib/mysql

chown mysql:mysql -R /var/lib/mysql

修改文件权限

chmod -R 777 /var/lib/mysql

初始化MySQL

mysqld --initialize

启动mysql

systemctl start mysqld

查看 MySQL 运行状态

systemctl status mysqld　　

修改root密码

mysqladmin -u root password "123456";