haproxy-自定义日志格式

log global 开启日志功能，默认只会在记录下面格式的日志

[root@haproxy ~]#tail /var/log/haproxy.log
Apr  9 19:38:46 localhost haproxy[60049]: Connect from 172.16.0.200:54628 to 172.16.0.100:80 (web_prot_http_nodes/HTTP)

option httplog 可以将http格式记录下，并且可以使用相关指令将特定信息记录在haproxy的日志中

但一般不建议开启，这会加重 HAProxy 负载

配置选项

log global                                  #开启记录日志,默认不开启
option httplog                              #开启记录httplog日志格式选项
capture cookie <name> len <length>          #捕获请求和响应报文中的 cookie并记录日志    
capture request header <name> len <length>  #捕获请求报文中指定的首部内容和长度并记录日志
capture response header <name> len <length> #捕获响应报文中指定的内容和长度首部并记录日志

#示例：
log global  
option httplog
capture request header Host len  256
capture request header User-Agent len 512   
capture request header Referer len 15
capture request header X-Forwarded-For len 15

只开启日志功能log global和option httplog，记录日志格式如下

[root@haproxy ~]#tail /var/log/haproxy.log
Apr  9 19:42:02 localhost haproxy[60236]: 172.16.0.200:54630 [09/Apr/2020:19:42:02.623] web_prot_http_nodes web_prot_http_nodes/web1 0/0/1/1/2 200 4264 - - ---- 1/1/0/0/0 0/0 "GET / HTTP/1.1"

配置示例

listen  web_host
  bind 10.0.0.7:80
  mode http
  balance  roundrobin
  log global                                        #开启日志功能
  option httplog                                    #开启httplog日志格式选项
  capture request header User-Agent len 512         #记录日志信息
  capture request header Host len  256              #记录日志信息
  cookie  SERVER-COOKIE  insert  indirect nocache
  server web1 10.0.0.17:80  cookie web1 check inter 3000 fall 3 rise 5
  server web2 10.0.0.27:80  cookie web2 check inter 3000 fall 3 rise 5

验证日志格式

[root@centos7 ~]#tail -n3 /var/log/haproxy.log
Apr  2 12:44:26 localhost haproxy[27637]: 10.0.0.6:50004 [02/Apr/2020:12:44:26.817] web_port web_port/web1 0/0/0/2/3 200 42484 - - --NI 1/1/0/0/0 0/0 {curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.27.1 zlib/1.2.3 libidn/1.18 libssh2/1.4.2|10.0.0.7} "GET /test.php HTTP/1.1"
Apr  2 12:44:27 localhost haproxy[27637]: 10.0.0.6:50006 [02/Apr/2020:12:44:27.294] web_port web_port/web2 0/0/0/1/1 404 370 - - --NI 1/1/0/0/0 0/0 {curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.27.1 zlib/1.2.3 libidn/1.18 libssh2/1.4.2|10.0.0.7} "GET /test.php HTTP/1.1"
Apr  2 12:44:27 localhost haproxy[27637]: 10.0.0.6:50008 [02/Apr/2020:12:44:27.840] web_port web_port/web1 0/0/0/3/4 200 42484 - - --NI 1/1/0/0/0 0/0 {curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.27.1 zlib/1.2.3 libidn/1.18 libssh2/1.4.2|10.0.0.7} "GET /test.php HTTP/1.1"

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