我有一台服务器,充当网络中cPanel邮件服务器的前端。前端服务器上的apache代理无故障运行了152天,然后突然发现使用它访问邮件服务器的Webmail客户端时出现500/502错误。
前端服务器使用已签名的SSL证书,cPanel服务器正在使用自签名的证书。这是前端服务器首次开始发生时的错误日志输出:
[Tue Sep 10 18:22:52.959291 2013] [proxy:error] [pid 19531] (502)Unknown error 502: [client 173.xx.xx.xx:9558] AH01084: pass request body failed to 184.xx.xx.xx:2096 (184.xx.xx.xx), referer: https://domain.com:2096/cpsess12385596/3rdparty/roundcube/?_task=mail&_refresh=1&_mbox=INBOX
[Tue Sep 10 18:22:52.959469 2013] [proxy:error] [pid 19531] [client 173.xx.xx.xx:9558] AH00898: Error during SSL Handshake with remote server returned by /cpsess12385596/3rdparty/roundcube/, referer: https://domain.com:2096/cpsess12385596/3rdparty/roundcube/?_task=mail&_refresh=1&_mbox=INBOX
前端服务器是一个EC2实例Apache/2.4.6 (Amazon)
,它在此服务器上为该代理运行My VirtualHost设置,如下所示:
< VirtualHost *:2096>
ServerName domain.com
SSLEngine on
SSLProxyEngine on
SSLProxyVerify none
SSLProxyCheckPeerCN off
SSLCertificateFile /x/x/x/domain.com.crt
SSLCertificateKeyFile /x/x/x/domain.com.key
SSLCACertificateFile /x/x/x/domain.com.cabundle
ProxyPass / https://184.xx.xx.xx:2096/
ProxyPassReverse / https://184.xx.xx.xx:2096/
ProxyPassReverseCookieDomain 184.xx.xx.xx:2096 domain.com
ProxyPassReverseCookiePath / /
SetOutputFilter INFLATE;proxy-html;DEFLATE
ProxyHTMLURLMap https://184.xx.xx.xx:2096 /
< /VirtualHost>
据我所知,前端服务器上没有任何变化,我没有进行更新或任何操作,一旦注意到此问题并且摆弄不成功,我尝试在两台服务器上重新启动,但都无济于事。
有什么建议么?