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 Follow me on: LinkedIn <http://www.linkedin.com/in/alberttollkuci> Google+ <https://plus.google.com/+AlbertTollku%C3%A7i/posts> Facebook <https://www.facebook.com/albert.tollkuci> Twitter <https://twitter.com/AlbertTollkuci> Career 2.0 <http://careers.stackoverflow.com/atollkuci> ------------------------------
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