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From Daniel <dferra...@gmail.com>
Subject Re: [users@httpd] Issue with proxy to IIS
Date Wed, 05 Apr 2017 12:23:24 GMT
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 <toscano.luca@gmail.com>:

> Hi Joe,
>
>
> 2017-03-30 21:33 GMT+02:00 Joe Muller <jmuller@arccorp.com>:
>
>> 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

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