HAProxy：显示“BADREQ” | BADREQ 数以千计

Question

我的 HAProxy 配置。

#HA-Proxy version 1.3.22 2009/10/14  Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
global
    maxconn 10000
    spread-checks 50
    user haproxy
    group haproxy
    daemon
    stats socket /tmp/haproxy
    log localhost   local0
    log localhost   local1 notice

defaults
    mode    http
    maxconn 50000
    timeout client 10000
    option forwardfor except 127.0.0.1
    option httpclose
    option httplog

listen dcaustin 0.0.0.0:80
    mode http
    timeout connect 12000
    timeout server 60000
    timeout queue 120000
    balance roundrobin
    option httpchk GET /index.html
    log global
    option httplog
    option dontlog-normal
    server web1 10.10.10.101:80 maxconn 300 check fall 1
    server web2 10.10.10.102:80 maxconn 300 check fall 1
    server web3 10.10.10.103:80 maxconn 300 check fall 1
    server web4 10.10.10.104:80 maxconn 300 check fall 1

listen stats 0.0.0.0:9000
    mode http
    balance
    log global
    timeout client 5000
    timeout connect 4000
    timeout server 30000
    stats uri /haproxy

HAProxy 正在运行，并且套接字正在工作...

adam@dcaustin:/etc/haproxy# echo "show info" | socat stdio /tmp/haproxy 
Name: HAProxy
Version: 1.3.22
Release_date: 2009/10/14
Nbproc: 1
Process_num: 1
Pid: 6320
Uptime: 0d 0h14m58s
Uptime_sec: 898
Memmax_MB: 0
Ulimit-n: 20017
Maxsock: 20017
Maxconn: 10000
Maxpipes: 0
CurrConns: 47
PipesUsed: 0
PipesFree: 0
Tasks: 51
Run_queue: 1
node: dcaustin
desiption: 

错误从套接字显示任何内容...

adam@dcaustin:/etc/haproxy# echo "show errors" | socat stdio /tmp/haproxy 
adam@dcaustin:/etc/haproxy# 

然而...

我的错误日志随着错误代码为 cR 的“badrequests”而爆炸。cR（根据 1.3 文档）是客户端发送完整 HTTP 请求之前的“超时 http-request”笔画。这有时是由于 PPPoE 网络客户端的 TCP MSS 值太大而导致的，无法传输完整大小的数据包，或者客户端手动发送请求并且输入速度不够快，或者忘记在末尾输入空行要求。这里的 HTTP 状态代码可能是 408。

在 408 上是正确的，但我们每小时收到数以千计的此类请求。（这个日志片段是一个大约 10 秒的剪辑......）

Jun 30 11:08:52 localhost haproxy[6320]: 92.22.213.32:26448 [30/Jun/2011:11:08:42.384] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10002 408 212 - - cR-- 35/35/18/0/0 0/0 "<BADREQ>"
Jun 30 11:08:54 localhost haproxy[6320]: 71.62.130.24:62818 [30/Jun/2011:11:08:44.457] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10001 408 212 - - cR-- 39/39/16/0/0 0/0 "<BADREQ>"
Jun 30 11:08:55 localhost haproxy[6320]: 84.73.75.236:3589 [30/Jun/2011:11:08:45.021] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10008 408 212 - - cR-- 35/35/15/0/0 0/0 "<BADREQ>"
Jun 30 11:08:55 localhost haproxy[6320]: 69.39.20.190:49969 [30/Jun/2011:11:08:45.709] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10000 408 212 - - cR-- 37/37/16/0/0 0/0 "<BADREQ>"
Jun 30 11:08:56 localhost haproxy[6320]: 2.29.0.9:58772 [30/Jun/2011:11:08:46.846] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10001 408 212 - - cR-- 43/43/22/0/0 0/0 "<BADREQ>"
Jun 30 11:08:57 localhost haproxy[6320]: 212.139.250.242:57537 [30/Jun/2011:11:08:47.568] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10000 408 212 - - cR-- 42/42/21/0/0 0/0 "<BADREQ>"
Jun 30 11:08:58 localhost haproxy[6320]: 74.79.195.75:55046 [30/Jun/2011:11:08:48.559] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10000 408 212 - - cR-- 46/46/24/0/0 0/0 "<BADREQ>"
Jun 30 11:08:58 localhost haproxy[6320]: 74.79.195.75:55044 [30/Jun/2011:11:08:48.554] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10004 408 212 - - cR-- 45/45/24/0/0 0/0 "<BADREQ>"
Jun 30 11:08:58 localhost haproxy[6320]: 74.79.195.75:55045 [30/Jun/2011:11:08:48.554] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10005 408 212 - - cR-- 44/44/24/0/0 0/0 "<BADREQ>"
Jun 30 11:09:00 localhost haproxy[6320]: 68.197.56.2:52781 [30/Jun/2011:11:08:50.975] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10000 408 212 - - cR-- 49/49/28/0/0 0/0 "<BADREQ>"

从我在 google 上读到的内容来看，如果我想查看错误的请求是什么，我可以向套接字显示错误，然后它会将它们吐出。我们确实运行了一个流量非常大的网站，并且“BADREQS”与正常请求的百分比非常低，但我希望能够了解该请求是什么，以便我可以对其进行调试。

统计数据

# pxname,svname,qcur,qmax,scur,smax,slim,stot,bin,bout,dreq,dresp,ereq,econ,eresp,wretr,wredis,status,weight,act,bck,chkfail,chkdown,lastchg,downtime,qlimit,pid,iid,sid,throttle,lbtot,tracked,type,rate,rate_lim,rate_max,
dcaustin,FRONTEND,,,64,120,50000,88433,105889100,2553809875,0,0,4641,,,,,OPEN,,,,,,,,,1,1,0,,,,0,45,0,128,
dcaustin,web1,0,0,10,28,300,20941,25402112,633143416,,0,,0,3,0,0,UP,1,1,0,0,0,2208,0,,1,1,1,,20941,,2,11,,30,
dcaustin,web2,0,0,9,30,300,20941,25026691,641475169,,0,,0,3,0,0,UP,1,1,0,0,0,2208,0,,1,1,2,,20941,,2,11,,30,
dcaustin,web3,0,0,10,27,300,20940,30116527,635015040,,0,,0,9,0,0,UP,1,1,0,0,0,2208,0,,1,1,3,,20940,,2,10,,31,
dcaustin,web4,0,0,5,28,300,20940,25343770,643209546,,0,,0,8,0,0,UP,1,1,0,0,0,2208,0,,1,1,4,,20940,,2,11,,31,
dcaustin,BACKEND,0,0,34,95,50000,83762,105889100,2553809875,0,0,,0,34,0,0,UP,4,4,0,,0,2208,0,,1,1,0,,83762,,1,43,,122,

88500 “会话”和 4​​500 错误。在最后 20 分钟。

Answer 1

尝试明确设置： timeout http-request 20s

另一种可能性是 http 请求标头中存在无效字符，HAProxy 基于此拒绝。如果它们是脚本编写不佳的机器人，那么拒绝可能是一件好事。如果您想允许它们，请设置：option accept-invalid-http-request