HAProxy Log 日志系统详解
1、实验拓扑
2、相关配置博客参照以下链接
HAProxy Balance 调度算法详解（包括 hash type）
HAProxy 的 server 参数、 stats 相关参数和 cookie 参数详解（包含其它相关参数 rspadd / rspdel / option / mode / maxconn ）
3、日志系统介绍
## log global # 采用全局 log 配置
## log <address> [len <length>] <facility> [<level> [<minlevel>]] # 自定义 log
## no log # 不记录 log
## 注意：默认发往本机的日志服务器
## (1) local2.* /var/log/local2.log
## (2) $ModLoad imudp
$UDPServerRun 514
常用的一些日志命令：
## log-format <string>
## capture cookie <name> len <length>
Capture and log a cookie in the request and in the response.
## capture request header <name> len <length>
Capture and log the last occurrence of the specified request header.
## 示例： capture request header X-Forwarded-For len 15
## capture response header <name> len <length>
Capture and log the last occurrence of the specified response header.
## 示例 ：capture response header Content-length len 9
## 示例： capture response header Location len 15
4、日志的前提配置参照以下博客
HAProxy 简单示例及 HAProxy_Log 的简单配置
5、HAProxy 的原始日志格式
[root@Tang ~]# tail -6 /var/log/haproxy/haproxy.log
Nov 8 11:10:03 neo haproxy[5165]: 172.16.141.99:65301 [08/Nov/2019:11:10:03.031] web websrvs/srv1 7/0/1/1/9 304 142 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Nov 8 11:10:08 neo haproxy[5165]: 172.16.141.99:65309 [08/Nov/2019:11:10:08.916] web websrvs/srv2 1/0/0/1/2 200 292 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Nov 8 11:10:10 neo haproxy[5165]: 172.16.141.99:65309 [08/Nov/2019:11:10:08.919] web websrvs/srv1 1160/0/0/2/1162 200 293 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Nov 8 11:10:14 neo haproxy[5165]: 172.16.141.99:65309 [08/Nov/2019:11:10:10.080] web websrvs/srv2 3933/0/0/1/3934 200 292 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Nov 8 11:10:14 neo haproxy[5165]: 172.16.141.99:65309 [08/Nov/2019:11:10:14.014] web websrvs/srv1 467/0/1/1/469 200 293 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Nov 8 11:10:14 neo haproxy[5165]: 172.16.141.99:65309 [08/Nov/2019:11:10:14.484] web websrvs/srv2 385/0/0/1/386 200 292 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
6、Chromy 进行访问时报头守护
7、HAProxy 的 cfg 文件修改
[root@Tang ~]# vim /etc/haproxy/haproxy.cfg
frontend web
bind *:80
default_backend websrvs
rspadd X-Via:\ Tangtang's\ HAPorxy
option forwardfor
capture request header User-Agent len 20
capture request header Cookie len 20
capture request header Host len 20
capture response header Content-length len 20
capture response header X-Via len 20
capture response header Location len 20
backend websrvs
balance roundrobin
server srv1 172.16.141.209:80 weight 1 weight 2 check rise 1 fall 2 maxconn 3000 cookie srv1-tangtang
server srv2 172.16.141.209:8080 weight 1 weight 2 check rise 1 fall 2 maxconn 3000 cookie srv2-tangtang
[root@Tang ~]# systemctl restart haproxy
8、HAProxy 的日志格式（已经捕捉到新的报文守护）
[root@Tang ~]# tail /var/log/haproxy/haproxy.log
Nov 8 11:10:10 neo haproxy[5165]: 172.16.141.99:65309 [08/Nov/2019:11:10:08.919] web websrvs/srv1 1160/0/0/2/1162 200 293 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Nov 8 11:10:14 neo haproxy[5165]: 172.16.141.99:65309 [08/Nov/2019:11:10:10.080] web websrvs/srv2 3933/0/0/1/3934 200 292 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Nov 8 11:10:14 neo haproxy[5165]: 172.16.141.99:65309 [08/Nov/2019:11:10:14.014] web websrvs/srv1 467/0/1/1/469 200 293 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Nov 8 11:10:14 neo haproxy[5165]: 172.16.141.99:65309 [08/Nov/2019:11:10:14.484] web websrvs/srv2 385/0/0/1/386 200 292 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.1"
Nov 8 11:23:30 neo haproxy[5220]: Proxy stats started.
Nov 8 11:23:30 neo haproxy[5220]: Proxy web started.
Nov 8 11:23:30 neo haproxy[5220]: Proxy websrvs started.
Nov 8 11:25:18 neo haproxy[5226]: 172.16.141.99:49951 [08/Nov/2019:11:25:18.065] web websrvs/srv1 3/0/1/1/5 200 293 - - ---- 2/2/0/0/0 0/0 {Mozilla/5.0 (Windows|WEBSRVS=srv1-tangtan|172.16.141.252} {33||} "GET / HTTP/1.1"
Nov 8 11:25:19 neo haproxy[5226]: 172.16.141.99:49954 [08/Nov/2019:11:25:19.338] web websrvs/srv2 2/0/0/1/3 200 292 - - ---- 2/2/0/0/0 0/0 {Mozilla/5.0 (Windows|WEBSRVS=srv1-tangtan|172.16.141.252} {32||} "GET / HTTP/1.1"
Nov 8 11:25:20 neo haproxy[5226]: 172.16.141.99:49954 [08/Nov/2019:11:25:19.342] web websrvs/srv1 1345/0/1/1/1347 200 293 - - ---- 2/2/0/0/0 0/0 {Mozilla/5.0 (Windows|WEBSRVS=srv1-tangtan|172.16.141.252} {33||} "GET / HTTP/1.1"
