Error 503 Backend fetch failed - XID: 208396
Albert Tollkuçi
albert.tollkuci at gmail.com
Mon Jun 20 09:29:52 CEST 2016
Something else that I found out is that no request is actually being made
to the backend server (at least nothing shows up in the log). It looks like
varnish is not even trying to fetch the page...
Albert
On Fri, Jun 17, 2016 at 5:35 PM, Albert Tollkuçi <albert.tollkuci at gmail.com>
wrote:
> Hello,
> I configured varnish a few weeks ago and things were running OK. Suddently
> yesterday it stopped working with the following error:
> *Error 503 Backend fetch failed*
>
> *Backend fetch failed*
> *Guru Meditation:*
>
> *XID: 208396*
> Here it's the result of varnishlog:
>
> ** << Request >> 65581*
> *- Begin req 2 rxreq*
> *- Timestamp Start: 1466080309.362022 0.000000 0.000000*
> *- Timestamp Req: 1466080309.362022 0.000000 0.000000*
> *- ReqStart 66.249.64.175 47813*
> *- ReqMethod GET*
> *- ReqURL /lajme/c66d2a2515/news.aspx*
> *- ReqProtocol HTTP/1.1*
> *- ReqHeader Host: time.ikub.al <http://time.ikub.al>*
> *- ReqHeader Connection: Keep-alive*
> *- ReqHeader Accept:
> text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8*
> *- ReqHeader From: googlebot(at)googlebot.com
> <http://googlebot.com>*
> *- ReqHeader User-Agent: Mozilla/5.0 (compatible; Googlebot/2.1;
> +http://www.google.com/bot.html <http://www.google.com/bot.html>)*
> *- ReqHeader Accept-Encoding: gzip,deflate,br*
> *- ReqHeader If-Modified-Since: Wed, 15 Jun 2016 07:10:05 UTC*
> *- ReqHeader X-Forwarded-For: 66.249.64.175*
> *- VCL_call RECV*
> *- ReqUnset Host: time.ikub.al <http://time.ikub.al>*
> *- ReqHeader Host: time.ikub.al <http://time.ikub.al>*
> *- ReqURL /lajme/c66d2a2515/news.aspx*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- VCL_return hash*
> *- ReqUnset Accept-Encoding: gzip,deflate,br*
> *- ReqHeader Accept-Encoding: gzip*
> *- VCL_call HASH*
> *- VCL_return lookup*
> *- Debug "XXXX MISS"*
> *- VCL_call MISS*
> *- ReqHeader x-state: MISS*
> *- VCL_return fetch*
> *- Link bereq 65582 fetch*
> *- Timestamp Fetch: 1466080309.362211 0.000190 0.000190*
> *- RespProtocol HTTP/1.1*
> *- ^C*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- ReqHeader Cookie:*
> *- ReqUnset Cookie:*
> *- VCL_return hash*
> *- ReqUnset Accept-Encoding: gzip,deflate,br*
> *- ReqHeader Accept-Encoding: gzip*
> *- VCL_call HASH*
> *- VCL_return lookup*
> *- Debug "XXXX MISS"*
> *- VCL_call MISS*
> *- ReqHeader x-state: MISS*
> *- VCL_return fetch*
> *- Link bereq 32810 fetch*
> *- Timestamp Fetch: 1466080311.215487 0.000181 0.000181*
> *- RespProtocol HTTP/1.1*
> *- RespStatus 503*
> *- RespReason Backend fetch failed*
> *- RespHeader Date: Thu, 16 Jun 2016 12:31:51 GMT*
> *- RespHeader Server: Varnish*
> *- RespHeader Content-Type: text/html; charset=utf-8*
> *- RespHeader Retry-After: 5*
> *- RespHeader X-Varnish: 32809*
> *- RespHeader Age: 0*
> *- RespHeader Via: 1.1 varnish-v4*
> *- VCL_call DELIVER*
> *- RespHeader X-Cache: MISS*
> *- RespHeader X-Cache-Hits: 0*
> *- RespUnset Server: Varnish*
> *- RespUnset X-Varnish: 32809*
> *- RespUnset Via: 1.1 varnish-v4*
> *- VCL_return deliver*
> *- Timestamp Process: 1466080311.215512 0.000206 0.000025*
> *- RespHeader Content-Length: 282*
> *- Debug "RES_MODE 2"*
> *- RespHeader Connection: keep-alive*
> *- Timestamp Resp: 1466080311.215539 0.000233 0.000027*
> *- Debug "XXX REF 1"*
> *- ReqAcct 389 0 389 215 282 497*
>
> I have tested the same page with:
>
>
> *curl time.ikub.al/lajme/c66d2a2515/news.aspx
> <http://time.ikub.al/lajme/c66d2a2515/news.aspx>*
>
> and it's working fine. Headers from curl are:
>
> ** Trying 13.94.212.211...*
> ** Connected to time.ikub.al <http://time.ikub.al> (13.94.212.211) port 80
> (#0)*
> *> HEAD /lajme/c66d2a2515/news.aspx HTTP/1.1*
> *> Host: time.ikub.al <http://time.ikub.al>*
> *> User-Agent: curl/7.43.0*
> *> Accept: */**
> *>*
> *< HTTP/1.1 200 OK*
> *HTTP/1.1 200 OK*
> *< Cache-Control: private*
> *Cache-Control: private*
> *< Content-Length: 93606*
> *Content-Length: 93606*
> *< Content-Type: text/html; charset=utf-8*
> *Content-Type: text/html; charset=utf-8*
> *< Last-Modified: Fri, 06 Sep 2013 11:50:00 GMT*
> *Last-Modified: Fri, 06 Sep 2013 11:50:00 GMT*
> *< Server: Microsoft-IIS/8.5*
> *Server: Microsoft-IIS/8.5*
> *< X-AspNet-Version: 2.0.50727*
> *X-AspNet-Version: 2.0.50727*
> *< X-Powered-By: ASP.NET <http://ASP.NET>*
> *X-Powered-By: ASP.NET <http://ASP.NET>*
> *< Date: Fri, 17 Jun 2016 15:31:24 GMT*
> *Date: Fri, 17 Jun 2016 15:31:24 GMT*
>
> Any idea what may be causing this?
>
> Thank you,
> Albert
>
>
> --
> Web: http://www.tollkuci.com
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> ------------------------------
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>
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