mysql 在linux下的操作

1. 安装mysql客户端：

   yum install mysql

   安装mysql 服务器端：

   yum install mysql-server

   yum install mysql-devel

2. 添加修改 etc/my.cnf      character_set_server=utf8
3. service mysqld start

4. Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.
    [FAILED] 启动报错的话执行下面语句

   mysql_install_db --user=mysql --ldata=/var/lib/mysql/

5. mysql -u root -p 进入mysql控制台
6. 开启远程被访问 修改mysql数据库下的user表 
   

              修改user表：update user set host = '%' where user = 'root'; 若本地不能访问，则可将update修改为insert