CentOS 7 安装mysql

主要使用Rails 搭配PG，但是经常要帮人搭建Mysql环境。
CentOS 7默认搭配的是MariaDB，为防止踩坑，还是安装官方Mysql。

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
sudo rpm -ivh mysql-community-release-el7-5.noarch.rpm

#更新yum软件包
yum check-update  

#更新系统 
yum update

 #安装mysql
yum install mysql mysql-server 

启动
systemctl start mysqld

mysql -u root

#授权远程访问
use mysql;
grant all privileges  on *.* to root@'%' identified by "root";
FLUSH RIVILEGES;