【记】本地远程连接VM VirtualBox中虚拟机Centos6的数据库MySQL

目标：远程连接虚拟机中的MySQL

效果图如下

1. VBox设置好端口转发

具体步骤请看 VM VirtualBox 网络地址转换（NAT）使用详解

2. MySQL授权

如果这时我们就去远程连接MySQL数据库，会提示

必须先授权，授权方法有多种，这里只介绍其中的一种

mysql> grant all privileges on *.* to 'root'@'%' identified by 'root' with grant option;
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

这时远程登录，仍然失败

C:UsersAdministrator>mysql -h 192.168.56.1 -P 33060 -u root -p
Enter password: ****
ERROR 2013 (HY000): Lost connection to MySQL server at 'waiting for initial communication packet', s
ystem error: 0

3. 关闭防火墙 

本地环境要关闭防火墙

虚拟机也要关闭防火墙

Linux关于启动和关闭防火墙的命令:

1) 重启后生效
　　开启： chkconfig iptables on
　　关闭： chkconfig iptables off
2) 即时生效，重启后失效
　　开启： service iptables start
   关闭： service iptables stop

关闭防火墙之后，远程登录就成功了

C:UsersAdministrator>mysql -h 192.168.56.1 -P 33060 -u root -p
Enter password: ****
Welcome to the MySQL monitor.  Commands end with ; or g.
Your MySQL connection id is 6
Server version: 5.5.21-log Source distribution

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