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。