Navicat 远程连接mysql数据库 2003：Can't connect to MySQL server (10060) /1130: Host '192.168.1.3' is not all

原因分析：

1. 2003：Can't connect to MySQL server (10060)

远程服务器防火墙没有开放mysql端口 ，例如3306

2.1130: Host '192.168.1.3' is not allowed to connect to thisMySQL server 

用户帐号不允许从远程登陆，只能localhost登陆

解决方法：

1.修改/etc/sysconfig/iptables 添加或者修改，下面两条添加在 22 端口下方

-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT（允许80端口通过防火墙）

-A INPUT -m state –state NEW -m tcp -p tcp –dport 3306 -j ACCEPT（允许3306端口通过防火墙）

添加好之后防火墙规则如下所示：

######################################
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 22 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 3306 -j ACCEPT
-A INPUT -j REJECT –reject-with icmp-host-prohibited
-A FORWARD -j REJECT –reject-with icmp-host-prohibited
COMMIT
#####################################

重启防火墙使配置生效： command 执行 /etc/init.d/iptables restart

2.登入mysql后，更改"mysql" 数据库里的 "user" 表里的 "host"项，从"localhost"改称"%"，（需要重启server）

连接mysql：格式： mysql -h主机地址 -u用户名 -p用户密码

use mydatabase;
update user set host = '%' where user ='root';mysql>select host, user from user;
flush privileges;