We are running Apache 2.4.18 with mod_proxy and recently moved a backend site from a Weblogic server to an IIS server, and now we are facing intermittent issues when users connect. Users tend to receive the error:
Proxy Error The proxy server received an invalid response from an upstream server. The server could not handle the request GET/. Reason: Error reading from remote server. The logs usually look something like this: [Wed Mar 29 14:10:42.893220 2017] [proxy:error] [pid 26435:tid 139648193414912] [client 12.34.56.78:62044] AH00898: Error reading from remote server returned by / or this: [Wed Mar 29 14:14:17.085777 2017] [proxy_http:error] [pid 26519:tid 139648184960768] (104)Connection reset by peer: [client 11.22.33.44:60271] AH01102: error reading status line from remote server iisserver.internaldomain.com:70, referer: http://externaldomain.com/?reqp=1&r eqr= Below is the current config (IP addresses have been changed to protect the innocent.) We have tried several different options but had no luck. Anybody else ever experience this ? We would appreciate any and all help on the matter. We do not see any errors on the backend IIS server when this occurs. I have yet to do a network trace between the systems. -Joe <VirtualHost a.b.c.d:80> ServerName www.externaldomain.com ServerAlias externaldomain.com SSLEngine off TransferLog "logs/www_externaldomain_access_log" ErrorLog "logs/www_externaldomain_error_log" <Location /> ProxyPass http://iisserver.internaldomain.com:70/ ProxyPassReverse http://iisserver.internaldomain.com:70/ SetEnv force-proxy-request-1.0 1 SetEnv proxy-nokeepalive 1 </Location> </VirtualHost>
