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在使用haproxy来作为tcp代理时,需要对某些IP做限制。用iptables也可以实现的。 顺道看了看haproxy手册,看看haproxy本身有是否提供方法来限制。要熟练使用某款应用需要熟读手册,手册是最权威,最详细的。好了,不罗嗦了,来看看haproxy怎么实现的:
Syntax
1 |
tcp-request content accept [{if | unless} <condition>] |
Sections
Defaults | Frontend | Listen | Backend |
No | Yes | Yes | No |
Description
During TCP content inspection, the connection is immediately validated if the condition is true (when used with "if") or false (when used with "unless"). Most of the time during content inspection, a condition will be in an uncertain state which is neither true nor false. The evaluation immediately stops when such a condition is encountered. It is important to understand that "accept" and "reject" rules are evaluated in their exact declaration order, so that it is possible to build complex rules from them. There is no specific limit to the number of rules which may be inserted.
Note that the "if/unless" condition is optional. If no condition is set on the action, it is simply performed unconditionally.
If no tcp-request content rules are matched, the default action already is "accept". Thus, this statement alone does not bring anything without another reject statement.
Syntax
1 |
tcp-request content reject [{if | unless} <condition>] |
Sections
Defaults | Frontend | Listen | Backend |
No | Yes | Yes | No |
Description
During TCP content inspection, the connection is immediately rejected if the condition is true (when used with "if") or false (when used with "unless"). Most of the time during content inspection, a condition will be in an uncertain state which is neither true nor false. The evaluation immediately stops when such a condition is encountered. It is important to understand that "accept" and "reject" rules are evaluated in their exact declaration order, so that it is possible to build complex rules from them. There is no specific limit to the number of rules which may be inserted.
Note that the "if/unless" condition is optional. If no condition is set on the action, it is simply performed unconditionally.
If no "tcp-request content" rules are matched, the default action is set to "accept".
配置实例如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 |
global log 127.0.0.1 local2 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 4000 user haproxy group haproxy daemon defaults mode http log global option dontlognull option httpclose #option httplog option tcplog #option forwardfor option redispatch timeout connect 10000 # default 10 second time out if a backend is not found timeout client 300000 timeout server 300000 maxconn 60000 retries 3 frontend tcp-2013-front bind *:2013 mode tcp default_backend tcp-2013-back tcp-2013-back mode tcp balance leastconn tcp-request content accept if { src -f /usr/local/haproxy/white_ip_list } tcp-request content reject server tcp-2013 10.1.27.20:2013 |
white_ip_list白名单文件一行一个IP或者IP段。
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30/08/2016 下午 2:36 沙发
注释都没有,怎么看