centos7安装mysql

step1:下载mysql的源

wget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm

step2:安装yum库

yum localinstall -y mysql57-community-release-el7-7.noarch.rpm

step3: 安装mysql

yum install -y mysql-community-server

step4:启动MySQL服务

systemctl start mysqld.service

step5:查看mysql的初始密码

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

step6: 进入mysql

mysql -uroot -p密码

step7: 修改mysql 初始密码

进入mysql 输入
SET PASSWORD = PASSWORD('新密码'); ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;