Varnish Error 503 Backend fetch failed

[Guillaume Quintard]

Have you changed http_resp_size too?

-- 
Guillaume Quintard

On Mon, Oct 17, 2016 at 9:23 AM, Guilleret Florian <
guilleret.florian at gmail.com> wrote:

> Hi,
>
> I'm getting weird 503 error on varnish.
>
> On page with ESI ( not on every page of my website ) i got Error 503
> Backend fetch failed.
>
> On varnish log i can saw FetchError http read error: overflow :
>
>
> * << BeReq >> 9
> - Begin bereq 8 fetch
> - Timestamp Start: 1476370852.736703 0.000000 0.000000
> - BereqMethod GET
> - BereqURL /pageXXX.html
> - BereqProtocol HTTP/1.1
> - BereqHeader Host: www.websiteXXXX.com
> - BereqHeader User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:47.0)
> Gecko/20100101 Firefox/47.0
> - BereqHeader Accept: text/html,application/xhtml+
> xml,application/xml;q=0.9,*/*;q=0.8
> - BereqHeader Accept-Language: fr-FR
> - BereqHeader Cookie: mage-translation-storage=%7B%7D;
> mage-translation-file-version=%7B%7D; mage-cache-storage=%7B%7D;
> mage-cache-storage-section-invalidation=%7B%7D; mage-cache-sessid=true;
> X-Magento-Vary=f970ba1c8edf4251be121a7535f2ce003b791953;
> form_key=lV5GbPY6uP
> - BereqHeader X-Forwarded-For: 80.74.72.196
> - BereqHeader Accept-Encoding: gzip
> - BereqHeader X-Varnish: 9
> - VCL_call BACKEND_FETCH
> - VCL_return fetch
> - BackendOpen 53 default(127.0.0.1,,81) 127.0.0.1 59720
> - Backend 53 default default(127.0.0.1,,81)
> - Timestamp Bereq: 1476370852.736959 0.000256 0.000256
> - FetchError http read error: overflow
> - BackendClose 53 default(127.0.0.1,,81)
> - Timestamp Beresp: 1476370865.707061 12.970358 12.970102
> - Timestamp Error: 1476370865.707072 12.970368 0.000011
> - BerespProtocol HTTP/1.1
> - BerespStatus 503
> - BerespReason Service Unavailable
> - BerespReason Backend fetch failed
> - BerespHeader Date: Thu, 13 Oct 2016 15:01:05 GMT
> - BerespHeader Server: Varnish
> - VCL_call BACKEND_ERROR
> - BerespHeader Content-Type: text/html; charset=utf-8
> - BerespHeader Retry-After: 5
> - VCL_return deliver
> - Storage malloc Transient
> - ObjProtocol HTTP/1.1
> - ObjStatus 503
> - ObjReason Backend fetch failed
> - ObjHeader Date: Thu, 13 Oct 2016 15:01:05 GMT
> - ObjHeader Server: Varnish
> - ObjHeader Content-Type: text/html; charset=utf-8
> - ObjHeader Retry-After: 5
> - Length 278
> - BereqAcct 611 0 611 7767 0 7767
> - End
>
>
> My website is a magento 2. So I suppose this is my issue :
>
>  http://devdocs.magento.com/guides/v2.0/config-guide/
> varnish/tshoot-varnish-503.html
>
> But even with this option http_resp_hdr_len it doesn't work...
>
> Can anyone know how to debug this ?
>
> _______________________________________________
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> varnish-misc at varnish-cache.org
> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
>
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