我有apache监听端口443运行https和执行一个ProxyPass回到独立jenkins进程在同一台服务器上。
大部分时间，这工作正常，但它往往会产生一个502错误。 我可以通过加载jenkin的网页并自动刷新来重现这一点。 通常在20分钟内，我可以得到一个502页。
我在Apache中启用了debugging日志logging，并在下面提供了我的config + apache日志。 jenkins日志没有透露（就像从未收到请求）。
我需要更多的指针来跟踪这个（最终解决）。
Apache / 2.2.3jenkinsver。 1.451
<Location /> ProxyPass http://jenkins.example.com:8080/ ProxyPassReverse http://jenkins.example.com:8080/ </Location> /usr/lib/jvm/jre-1.6.0/bin/java -Dcom.sun.akuma.Daemon=daemonized -Djava.awt.headless=true -DJENKINS_HOME=/var/lib/jenkins -jar /usr/lib/jenkins/jenkins.war --logfile=/var/log/jenkins/jenkins.log --daemon --httpPort=8080 --ajp13Port=8009 --debug=5 --handlerCountMax=100 --handlerCountMaxIdle=20 我自己得到错误： 192.168.186.207 - - [13/Mar/2013:09:23:16 -0400] "GET /?auto_refresh=true HTTP/1.1" 502 473
[Wed Mar 13 09:23:16 2013] [info] Initial (No.1) HTTPS request received for child 10 (server jenkins.example.com:443) [Wed Mar 13 09:23:16 2013] [debug] mod_proxy_http.c(56): proxy: HTTP: canonicalising URL //jenkins.example.com:8080/ [Wed Mar 13 09:23:16 2013] [debug] proxy_util.c(1505): [client 192.168.186.207] proxy: http: found worker http://jenkins.example.com:8080/ for http://jenkins.example.com:8080/?auto_re fresh=true, referer: https://jenkins.example.com/?auto_refresh=true [Wed Mar 13 09:23:16 2013] [debug] mod_proxy.c(986): Running scheme http handler (attempt 0) [Wed Mar 13 09:23:16 2013] [debug] mod_proxy_http.c(1982): proxy: HTTP: serving URL http://jenkins.example.com:8080/?auto_refresh=true [Wed Mar 13 09:23:16 2013] [debug] proxy_util.c(2007): proxy: HTTP: has acquired connection for (jenkins.example.com) [Wed Mar 13 09:23:16 2013] [debug] proxy_util.c(2063): proxy: connecting http://jenkins.example.com:8080/?auto_refresh=true to jenkins.example.com:8080 [Wed Mar 13 09:23:16 2013] [debug] proxy_util.c(2189): proxy: connected /?auto_refresh=true to jenkins.example.com:8080 [Wed Mar 13 09:23:16 2013] [error] [client 192.168.186.207] (104)Connection reset by peer: proxy: error reading status line from remote server jenkins.example.com, referer: https://jenkins.example.com/?auto_refresh=true [Wed Mar 13 09:23:16 2013] [debug] mod_proxy_http.c(1484): [client 192.168.186.207] proxy: NOT Closing connection to client although reading from backend server jenkins.example.com failed., r eferer: https://jenkins.example.com/?auto_refresh=true [Wed Mar 13 09:23:16 2013] [error] [client 192.168.186.207] proxy: Error reading from remote server returned by /, referer: https://jenkins.example.com/?auto_refresh=true [Wed Mar 13 09:23:16 2013] [debug] proxy_util.c(2025): proxy: HTTP: has released connection for (jenkins.example.com) [Wed Mar 13 09:23:16 2013] [debug] ssl_engine_kernel.c(1823): OpenSSL: Write: SSL negotiation finished successfully [Wed Mar 13 09:23:16 2013] [info] [client 192.168.186.207] Connection closed to child 10 with standard shutdown (server jenkins.example.com:443) [Wed Mar 13 09:23:17 2013] [info] [client 192.168.186.207] Connection to child 7 established (server jenkins.example.com:443)
“502”表示后端服务器有问题，而不是Apache。 你也可以在日志中看到这个：
[Wed Mar 13 09:23:16 2013] [error] [client 192.168.186.207] (104)Connection reset by peer: proxy: error reading status line from remote server jenkins.example.com, referer: https://jenkins.example.com/?auto_refresh=true
这是你的Jenkins服务器挂在apache服务器上。 如果直接在Jenkins实例（端口8080）上执行此操作，请尝试是否也出现此问题。