mysql繫結多個ip地址

weixin_33816946發表於2018-03-17
MySql

http://jpuyy.com/2013/07/mysql-bind-multi-address.html

mysql繫結多個ip地址

發表於2013 年 7 月 1 日

my.cnf中有選項bind-address=127.0.0.1，是說mysql server監聽的是本地發來的請求，如果是任意主機都可以請求，則寫為0.0.0.0，但是這樣又不太安全。監聽某ip，指定此ip地址即可，但是要保證mysql的user中有允許此ip訪問，否則不能對資料庫操作。那麼是否可以在配置裡只規定幾個ip呢？

簡單直接回答：不可能

請參考：http://dev.mysql.com/doc/refman/5.1/en/server-options.html#option_mysqld_bind-address

The MySQL server listens on a single network socket for TCP/IP connections. This socket is bound to a single address, but it is possible for an address to map onto multiple network interfaces. The default address is 0.0.0.0. To specify an address explicitly, use the –bind-address=addr option at server startup, where addr is an IPv4 address or a host name. If addr is a host name, the server resolves the name to an IPv4 address and binds to that address. The server treats different types of addresses as follows:

If the address is 0.0.0.0, the server accepts TCP/IP connections on all server host IPv4 interfaces.
If the address is a “regular” IPv4 address (such as 127.0.0.1), the server accepts TCP/IP connections only for that particular IPv4 address.

但是有此需求，就會到訪問控制，那麼使用防火牆iptables可實現此效果

mysql-server為192.168.1.3，只允許192.168.1.4,  192.168.1.5,  192.168.1.6來訪問3306埠

在my.cnf中

bind-address = 0.0.0.0

在訪問3306埠的主機中，只允許192.168.1.4-6，其他ip一律DROP掉

/sbin/iptables -A INPUT -p tcp -s 192.168.1.4 --dport 3306 -j ACCEPT
/sbin/iptables -A INPUT -p tcp -s 192.168.1.5 --dport 3306 -j ACCEPT
/sbin/iptables -A INPUT -p tcp -s 192.168.1.6 --dport 3306 -j ACCEPT
/sbin/iptables -A INPUT -p tcp --dport 3306 -j DROP

或

/sbin/iptables -A INPUT -p tcp --dport 3306 ! -s 192.168.1.4 -j DROP
/sbin/iptables -A INPUT -p tcp --dport 3306 ! -s 192.168.1.5 -j DROP
/sbin/iptables -A INPUT -p tcp --dport 3306 ! -s 192.168.1.6 -j DROP

儲存防火牆規則

service iptables save

檢視INPUT鏈包含3306的規則

echo -e "target prot opt source destination\n$(iptables -L INPUT -n | grep 3306)"

這樣就實現了mysql只允許指定ip訪問。

參考：

http://www.cyberciti.biz/faq/unix-linux-mysqld-server-bind-to-more-than-one-ip-address/

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