MySQL - Centos安装MySQL
环境：Centos7.3
No.1 切换为root用户，是则略过
su root
No.2 下载MySQL的repo源
wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
No.3 安装repo包
rpm -ivh mysql-community-release-el7-5.noarch.rpm
No.4 安装MySQL
yum install mysql-server
如果有提示则选择y
No.5 启动MySQL的服务
systemctl start mysqld.service
systemctl status mysqld.service # 查看服务是否成功启动， active(running)则表示成功，dead则是启动失败
No.6 进入MySQL，并设置密码
mysql
UPDATE mysql.user SET Password = PASSWORD('root!admin') WHERE User = 'root';
FLUSH PRIVILEGES;
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