本文适用CentOS 7.5
1、下载mysql 5.7 的rpm
wget http://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
2、
yum -y install mysql57-community-release-el7-11.noarch.rpm
3、安装mysql
yum install mysql-community-server
4、启动mysql
systemctl start mysqld.service
5、查找root初始密码
grep password /var/log/mysqld.log
2018-11-19T03:45:01.838636Z 1 [Note] A temporary password is generated for root@localhost: *Lq+RLSse31E
6、登录系统
mysql -uroot -p
7、修改root用户
ALTER USER USER() IDENTIFIED BY ‘password’;
8、新增dev用户
grant all privileges on . to dev@’%’ identified by ‘password’;