If you don't mine me asking. Why did you move the backend from Weblogic to IIS, I assume you have set IIS to communicate to that Weblogic then?
Oracle has a plugin for Apache to connect to Weblogic if you don't want to use mod_proxy. 2017-04-05 11:02 GMT+02:00 Luca Toscano <[email protected]>: > Hi Joe, > > > 2017-03-30 21:33 GMT+02:00 Joe Muller <[email protected]>: > >> 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/?req >> p=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> >> > > > The error seems related to the IIS server either dropping the connection > with httpd or returning something malformed response. Have you tried to > make the same request directly to the IIS server and see what happens? > Moreover, I would do the following: > > 1) increase the https://httpd.apache.org/docs/2.4/mod/core.html#loglevel > and see if anything comes up. > 2) https://httpd.apache.org/docs/2.4/mod/mod_dumpio.html may help in > debugging the issue, even if I am not 100% sure (never tried) if it works > with mod_proxy too. > > Hope it helps! > > Luca > -- *Daniel Ferradal* IT Specialist email dferradal at gmail.com linkedin es.linkedin.com/in/danielferradal
