haproxy 超时机制

<pre name="code" class="python">option  redispatch  option redispatch   是否允许重新分配在session 失败后

option abortonclose 丢弃由于客户端等待时间过长而关闭连接但仍在haproxy等待队列中的请求

    option abortonclose

    #当服务器负载很高的时候，自动结束掉当前队列处理比较久的链接  

defaults
        log     global
        mode    http
        option  httplog
        option  dontlognull
        retries 3
        option  redispatch
        option  abortonclose
        maxconn 65535
        timeout connect 5000
        timeout client  50000
        timeout server 50000

        timeout check   5s
        stats   refresh 30s

timeout http request ：在客户端建立连接但不请求数据时，关闭客户端连接
timeout queue ：等待最大时长
timeout connect： 定义haproxy将客户端请求转发至后端服务器所等待的超时时长
timeout client：客户端非活动状态的超时时长
timeout server：客户端与服务器端建立连接后，等待服务器端的超时时长，
timeout http-keep-alive ：定义保持连接的超时时长
timeout check：健康状态监测时的超时时间，过短会误判，过长资源消耗

client_timeout 是 app 连接 haproxy的时间
server_timeout 是haproxy 连接后端的时间.

目前发现 超时后,前台一个点击 haproxy 会收到两个相同的请求,原因待查明。

设置 5秒超时时:
     timeout connect 5000
        timeout client  50000
        timeout server 50000

        timeout check   5s
        stats   refresh 30s

Apr 13 17:29:23 localhost haproxy[31428]: 192.168.33.29:53793 [13/Apr/2016:17:29:20.210] www zlserver_8081/zlhost01_8081 0/0/0/2975/2975 200 325 - - ---- 7/7/0/1/0 0/0 "POST /web/fileUpload 

HTTP/1.1"

Apr 13 17:30:17 localhost haproxy[31428]: 192.168.33.29:53793 [13/Apr/2016:17:29:23.185] www zlserver_8081/zlhost01_8081 3965/0/0/-1/53966 -1 0 - - cD-- 9/9/0/0/0 0/0 "GET /web/adminauth?

fileNames=201604131728504d4a55c40faf4717b428ea0cd04eeebb.txt&method=%2Fwze%2Fsettlement%2Fsubmit HTTP/1.1"

Apr 13 17:31:07 localhost haproxy[31428]: 192.168.33.29:53822 [13/Apr/2016:17:30:17.153] www zlserver_8081/zlhost01_8081 0/0/1/-1/50002 504 194 - - sH-- 3/3/0/0/0 0/0 "GET /web/adminauth?

fileNames=201604131728504d4a55c40faf4717b428ea0cd04eeebb.txt&method=%2Fwze%2Fsettlement%2Fsubmit HTTP/1.1"

相同请求发了2次

设置

        timeout connect 500000
        timeout client  500000
        timeout server 500000

        timeout check   500s

Apr 13 17:34:50 localhost haproxy[31579]: 192.168.33.29:53958 [13/Apr/2016:17:34:46.969] www zlserver_8081/zlhost01_8081 0/0/1/3100/3101 200 325 - - ---- 8/8/0/1/0 0/0 "POST /web/fileUpload 

HTTP/1.1"

Apr 13 17:35:01 localhost haproxy[30096]: 192.168.33.29:53932 [13/Apr/2016:17:34:09.780] www zlserver_8081/zlhost01_8081 1581/0/0/-1/51583 -1 0 - - cD-- 8/8/0/0/0 0/0 "GET /web/adminauth?

fileNames=20160413173337310c4e58eb244e6aa4855064ee439f24.txt&method=%2Fwze%2Fsettlement%2Fsubmit HTTP/1.1"

修改超时时间后只发一次