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mysql安装，配置，远程连接_MySQL

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May 31, 2016 am 08:48 AM

目标是在linux上安装mysql，先去http://dev.mysql.com/downloads/mysql/下载，选好平台，我直接下载的Linux - Generic (glibc 2.5) (x86, 64-bit), RPM Bundle，里面server，client都有。

解压后，执行rpm -ivh MySQL-server-***.rpm和rpm -ivhMySQL-client-***.rpm就成功安装了server和client，默认配置文件在/usr/my.cnf，可以修改端口号等。

在/usr/share/mysql/下执行mysql.server start可以启动mysql。

按照提示，安装后在/root/.mysql_secret中有为root生成的随机密码。

1、执行mysql -u root -p随机的密码进入mysql控制台（后续执行命令都要以;结尾）

2、set password for 'root'@'localhost' = password('123456'); 改密码

3、至此可以用新密码登录；

默认情况下Mysql只允许本地进入设置，如果需要外部IP连接到mysql（比如用mysql workbench访问mysql，是不行的），需要向mysql数据库里的“user”表里添加相关授权，如下：

1、grant all on *.* to 'root'@'172.16.2.7' identified by '123456';

2、flush privileges;

此时在172.16.2.7上用MySQL workbench可以成功连上服务器上的mysql。

grant语法：

grant 权限名（所有的权限用all） on 库名（*全部）.表名（*全部） to ‘要授权的用户名’@’%’(%表示所有的IP，可以只写一个IP） identified by “密码”；

身份检查使用user表(Host, User和Password)3个范围列执行。服务器只有在user表记录的Host和User列匹配客户端主机名和用户名并且提供了正确的密码时才接受连接。

可以用select Host,User from mysql.user;命令查看当前用户。

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