HAProxy的高级配置选项-修改报文首部
作者：尹正杰
版权声明：原创作品，谢绝转载！否则将追究法律责任。
我们之前学习过在Nginx上可以修改客户端的报文信息，在haproxy中也是支持该功能的，接下来我们一起来学习一下吧。
一.修改报文首部概述
在请求报文尾部添加指定报文(使用较少)： reqadd<string> [{if | unless} <cond>] 支持条件判断 在响应报文尾部添加指定报文： rspadd<string> [{if | unless} <cond>] 示例： rspadd X-Via: HAPorxy 从请求报文中删除匹配正则表达式的首部 reqdel<search> [{if | unless} <cond>] reqidel<search> [{if | unless} <cond>] 不分大小写 从响应报文中删除匹配正则表达式的首部 rspdel<search> [{if | unless} <cond>] rspidel<search> [{if | unless} <cond>] 示例： rspidel server.* 从相应报文删除server信息 rspidel X-Powered-By:.* 从响应报文删除X-Powered-By信息
二.试验环境准备
1>.安装httpd服务
安装apache httpd服务，并准备测试数据。
参考连接:
https://www.cnblogs.com/yinzhengjie/p/12114195.html
2>.配置haproxy服务器
[root@node102.yinzhengjie.org.cn ~]# cat /etc/haproxy/haproxy.cfg global maxconn 100000 chroot /yinzhengjie/softwares/haproxy stats socket /yinzhengjie/softwares/haproxy/haproxy.sock mode 600 level admin user haproxy group haproxy daemon nbproc 2 cpu-map 1 0 cpu-map 2 1 nbthread 2 pidfile /yinzhengjie/softwares/haproxy/haproxy.pid log 127.0.0.1 local5 info defaults option http-keep-alive option forwardfor option redispatch option abortonclose maxconn 100000 mode http timeout connect 300000ms timeout client 300000ms timeout server 300000ms listen status_page bind 172.30.1.102:8888 stats enable stats uri /haproxy-status stats auth admin:yinzhengjie stats realm "Welcome to the haproxy load balancer status page of YinZhengjie" stats hide-version stats admin if TRUE stats refresh 5s listen WEB_PORT_80 bind 172.30.1.102:80 balance roundrobin cookie HAPROXY-COOKIE insert indirect nocache server web01 172.30.1.106:80 cookie httpd-106 check inter 3000 fall 3 rise 5 server web02 172.30.1.107:80 cookie httpd-107 check inter 3000 fall 3 rise 5 server web03 172.30.1.108:80 cookie httpd-107 check inter 3000 fall 3 rise 5 backup [root@node102.yinzhengjie.org.cn ~]# [root@node102.yinzhengjie.org.cn ~]# systemctl restart haproxy [root@node102.yinzhengjie.org.cn ~]#
3>.客户端访问haproxy服务器(http://node102.yinzhengjie.org.cn/)并查看响应报文，如下图所示。
三.为响应报文添加指定字段实战案例
1>.编辑haproxy服务器的配置文件并重启haproxy服务
[root@node102.yinzhengjie.org.cn ~]# cat /etc/haproxy/haproxy.cfg global maxconn 100000 chroot /yinzhengjie/softwares/haproxy stats socket /yinzhengjie/softwares/haproxy/haproxy.sock mode 600 level admin user haproxy group haproxy daemon nbproc 2 cpu-map 1 0 cpu-map 2 1 nbthread 2 pidfile /yinzhengjie/softwares/haproxy/haproxy.pid log 127.0.0.1 local5 info defaults option http-keep-alive option forwardfor option redispatch option abortonclose maxconn 100000 mode http timeout connect 300000ms timeout client 300000ms timeout server 300000ms listen status_page bind 172.30.1.102:8888 stats enable stats uri /haproxy-status stats auth admin:yinzhengjie stats realm "Welcome to the haproxy load balancer status page of YinZhengjie" stats hide-version stats admin if TRUE stats refresh 5s listen WEB_PORT_80 bind 172.30.1.102:80 #添加响应报文头部信息 rspadd HAProxy-Version: HAPorxy-1.8.20 balance roundrobin cookie HAPROXY-COOKIE insert indirect nocache server web01 172.30.1.106:80 cookie httpd-106 check inter 3000 fall 3 rise 5 server web02 172.30.1.107:80 cookie httpd-107 check inter 3000 fall 3 rise 5 server web03 172.30.1.108:80 cookie httpd-107 check inter 3000 fall 3 rise 5 backup [root@node102.yinzhengjie.org.cn ~]# [root@node102.yinzhengjie.org.cn ~]# systemctl restart haproxy [root@node102.yinzhengjie.org.cn ~]# [root@node102.yinzhengjie.org.cn ~]#
2>.客户端访问haproxy服务器(http://node102.yinzhengjie.org.cn/)并查看响应报文，如下图所示。
三.为响应报文删除指定字段实战案例
1>.编辑haproxy服务器的配置文件并重启haproxy服务
[root@node102.yinzhengjie.org.cn ~]# cat /etc/haproxy/haproxy.cfg global maxconn 100000 chroot /yinzhengjie/softwares/haproxy stats socket /yinzhengjie/softwares/haproxy/haproxy.sock mode 600 level admin user haproxy group haproxy daemon nbproc 2 cpu-map 1 0 cpu-map 2 1 nbthread 2 pidfile /yinzhengjie/softwares/haproxy/haproxy.pid log 127.0.0.1 local5 info defaults option http-keep-alive option forwardfor option redispatch option abortonclose maxconn 100000 mode http timeout connect 300000ms timeout client 300000ms timeout server 300000ms listen status_page bind 172.30.1.102:8888 stats enable stats uri /haproxy-status stats auth admin:yinzhengjie stats realm "Welcome to the haproxy load balancer status page of YinZhengjie" stats hide-version stats admin if TRUE stats refresh 5s listen WEB_PORT_80 bind 172.30.1.102:80 #添加响应报文头部信息 rspadd HAProxy-Version: HAPorxy-1.8.20 #删除响应报文头部信息 rspdel ^Server:.* balance roundrobin cookie HAPROXY-COOKIE insert indirect nocache server web01 172.30.1.106:80 cookie httpd-106 check inter 3000 fall 3 rise 5 server web02 172.30.1.107:80 cookie httpd-107 check inter 3000 fall 3 rise 5 server web03 172.30.1.108:80 cookie httpd-107 check inter 3000 fall 3 rise 5 backup [root@node102.yinzhengjie.org.cn ~]# [root@node102.yinzhengjie.org.cn ~]# systemctl restart haproxy [root@node102.yinzhengjie.org.cn ~]#
2>.客户端访问haproxy服务器(http://node102.yinzhengjie.org.cn/)并查看响应报文，如下图所示。
