Re: [squid-users] Reverse proxy timeout

From: Nikolai Gorchilov <niki_at_x3me.net>
Date: Fri, 31 Jan 2014 03:20:14 +0200

Could it be related to Host header mismatch? In your direct example it
is localhost, but when routed via squid it will become couchdb. You
can add forceddomain=localhost parameter in your cache_peer directive
in order to fix it.

Hope this helps!

Best,
Niki

P.S. I assume you run both Squid and CouchDB on one and the same
(virtual/physical) machine. If not, then "cache_peer localhost" is a
ver wrong statement :-)

On Fri, Jan 31, 2014 at 1:29 AM, Boaz Citrin <bcitrin_at_gmail.com> wrote:
> Hello,
>
> I request a page directly from my server and all works fine.
> Same request through Squid as a reverse proxy I get a timeout.
> Squid version is 2.7.STABLE8 running on Windows 7 64-bit.
>
> The request is pretty standard:
>
>> GET /_fti/local/viz_data_hub/_design/lucene/search?q=%28directory:%22/directory/id/urn:uuid:63e5cd29-a2c0-43b9-a8fe-df4e85579c9b%22%29&skip=0&limit=50&include_docs=true HTTP/1.1
>> User-Agent: curl/7.26.0
>> Host: localhost:5984
>> Accept: */*
>
>
> My server, when requested directly, returns the following headers:
>
> < HTTP/1.1 200 OK
> < Vary: Accept, Accept-Encoding, User-Agent
> < Transfer-Encoding: chunked
> < Server: Jetty(8.1.14.v20131031), CouchDB/1.2.1 (Erlang OTP/R14B04)
> < ETag: d2efc8de394f
> < Date: Thu, 30 Jan 2014 22:59:28 GMT
> < Content-Type: text/plain;charset=UTF-8
> < Cache-Control: must-revalidate
>
>
> This is the relevant part from Squid config, all the rest is the default:
>
> http_port 5986 accel defaultsite=couchdb
> cache_peer localhost parent 5984 0 no-query originserver name=couchdb_server
> acl couchdb_access dstdomain couchdb
> http_access allow couchdb_access
> cache_peer_access couchdb_server allow couchdb_access
> cache_peer_access couchdb_server deny all
>
>
> And this is the response from Squid:
>
> < HTTP/1.0 504 Gateway Time-out
> < Server: squid/2.7.STABLE8
> < Date: Thu, 30 Jan 2014 23:15:25 GMT
> < Content-Type: text/html
> < Content-Length: 1223
> < X-Squid-Error: ERR_READ_TIMEOUT 0
> < X-Cache: MISS from bci.vizrt.internal
> < X-Cache-Lookup: MISS from bci.vizrt.internal:8089
> < Via: 1.0 bci.vizrt.internal:8089 (squid/2.7.STABLE8)
> < Connection: close
> <
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
> "http://www.w3.org/TR/html4/loose.dtd">
> <HTML><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html;
> charset=iso-8859-1">
> <TITLE>ERROR: The requested URL could not be retrieved</TITLE>
> <STYLE type="text/css"><!--BODY{background-color:#ffffff;font-family:verdana,sans-serif}PRE{font-family:sans-serif}--></STYLE>
> </HEAD><BODY>
> <H1>ERROR</H1>
> <H2>The requested URL could not be retrieved</H2>
> <HR noshade size="1px">
> <P>
> While trying to retrieve the URL:
> http://couchdb:5986/_fti/local/viz_data_hub/_design/lucene/search?
> <P>
> The following error was encountered:
> <UL>
> <LI>
> <STRONG>
> Read Timeout
> </STRONG>
> </UL>
>
> <P>
> The system returned:
> <PRE><I> [No Error]</I></PRE>
>
> <P>
> A Timeout occurred while waiting to read data from the network. The network
> or server may be down or congested. Please retry your request.
> <P>Your cache administrator is <A HREF="mailto:webmaster">webmaster</A>.
>
> <BR clear="all">
> <HR noshade size="1px">
> <ADDRESS>
> Generated Thu, 30 Jan 2014 23:15:25 GMT by bci.vizrt.internal
> (squid/2.7.STABLE8)
> </ADDRESS>
> </BODY></HTML>
> * Closing connection #0
>
>
> And in the store.log:
>
> 1391123725.384 RELEASE -1 FFFFFFFF 42ACBA69A790D14B46085473EF9FC071
> 504 1391123725 -1 -1 text/html 1223/1223 GET
> http://couchdb:5986/_fti/local/viz_data_hub/_design/lucene/search?q=%28directory:%22/directory/id/urn:uuid:63e5cd29-a2c0-43b9-a8fe-df4e85579c9b%22%29&skip=0&limit=50&include_docs=true
>
>
> And in access.log:
> 1391123725.384 900345 127.0.0.1 TCP_MISS/504 1565 GET
> http://couchdb:5986/_fti/local/viz_data_hub/_design/lucene/search? -
> FIRST_UP_PARENT/couchdb_server text/html
>
>
> Thanks!!
>
> Boaz
Received on Fri Jan 31 2014 - 01:21:02 MST

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