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Reply to topic   Topic: Proxy Error in accessing web portal
Author
rks4sm



Joined: 28 Nov 2013
Posts: 17
Location: New Delhi
PostPosted: Thu 06 Nov '14 13:23    Post subject: Proxy Error in accessing web portal Reply with quote
Hello Friends,

We are getting the error from the SAP portal where we have installed Apache as a reverse Proxy on Windows server.

The Apache Server received an invalid response from an upstream server.
The Proxy server could not handle the request POST/irj/portal

Reason: Error reading from remote server
--------------------------------------------------
Apache/2.4.9 (Win32)OpenSSL/1.0.1h Server at www.xyz.com port 80

Can you please tell me what do I need to check?

TIA,
rakesh
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7373
Location: Germany, Next to Hamburg
PostPosted: Thu 06 Nov '14 19:36    Post subject: Reply with quote
What is in your error log about that?
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rks4sm



Joined: 28 Nov 2013
Posts: 17
Location: New Delhi
PostPosted: Tue 16 Dec '14 3:16    Post subject: We have got the log during the issue Reply with quote
Hi,

we are seeing this entry on the log when we had temporary issue

---------------

Mon Dec 15 15:24:10.763255 2014] [autoindex:error] [pid 8484:tid 4212] [client x.y.z.u:42628] AH01276: Cannot serve directory G:/Program Files (x86)/Apache Software Foundation/Apache2.2/htdocs/: No matching DirectoryIndex (index.html) found, and server-generated directory index forbidden by Options directive
--------------------------------

Does this points to our Proxy error issues in the portal which is very intermittent?

Thanks,
Rakesh

[/img]
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7373
Location: Germany, Next to Hamburg
PostPosted: Thu 18 Dec '14 12:27    Post subject: Reply with quote
It seems that the DirectoryIndex in not set to the index file of the backend. Like default.jsp or what ever. Or the path is not configured so apache searches in its own directory.
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rks4sm



Joined: 28 Nov 2013
Posts: 17
Location: New Delhi
PostPosted: Thu 18 Dec '14 12:44    Post subject: Reply with quote
Thanks James!
But what could be the possible reason for the intermittent issue?


Regards,
Rakesh
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7373
Location: Germany, Next to Hamburg
PostPosted: Tue 23 Dec '14 13:12    Post subject: Reply with quote
reason for a intermittent issue. I can only guess.

It can be

- the network connection
- the backend server is too busy

You can find that out by setting the log level to debug for the proxy module.
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rks4sm



Joined: 28 Nov 2013
Posts: 17
Location: New Delhi
PostPosted: Tue 20 Jan '15 13:51    Post subject: Reply with quote
The only issues in setting the log to debug is the issue is intermittent and we can't anticipate when the issues will come.

Is it prudent to set the log level as debug?

Thanks,
Rakesh
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7373
Location: Germany, Next to Hamburg
PostPosted: Tue 20 Jan '15 15:11    Post subject: Reply with quote
Well setting the log to debug is opening a flood of log entries, but at least it can help to find the error.
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