<div dir="ltr">Hi,<div><br></div><div>Varnishlog:  <b>FetchError     http first read error: EOF</b></div><div><br></div><div><div>*   << BeReq    >> 3244175</div><div>-   Begin          bereq 3244174 pass</div><div>-   Timestamp      Start: 1479720397.535252 0.000000 0.000000</div><div>-   BereqMethod    GET</div><div>-   BereqURL       /forum/js/brivium/CustomNodeStyle/custom_node.js?_v=00bdfbe8</div><div>-   BereqProtocol  HTTP/1.1</div><div>-   BereqHeader    Host:******.com</div><div>-   BereqHeader    User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1003.1 Safari/535.19 Awesomium/1.7.1</div><div>-   BereqHeader    Accept: */*</div><div>-   BereqHeader    Referer: <a href="https://facebook.com/">https://facebook.com/</a></div><div>-   BereqHeader    Accept-Encoding: gzip,deflate</div><div>-   BereqHeader    Accept-Language: en-us,en</div><div>-   BereqHeader    Accept-Charset: iso-8859-1,*,utf-8</div><div>-   BereqHeader    Cookie: _gat=1; pps_show_100=Tue%20Nov%2022%202016%2012%3A31%3A52%20GMT+0300%20%28Turkey%20Standard%20Time%29; pps_times_showed_100=2; _ga=GA1.2.1950747215.1479806983; xf_session=20756c36c3041eb1b77c10d43b913cd8</div><div>-   BereqHeader    X-Forwarded-For: 176.240.98.52</div><div>-   BereqHeader    X-Varnish: 3244175</div><div>-   VCL_call       BACKEND_FETCH</div><div>-   VCL_return     fetch</div><div>-   BackendOpen    160 boot.default 176.53.126.10 8080 176.53.126.10 47362</div><div>-   BackendStart   176.53.126.10 8080</div><div>-   Timestamp      Bereq: 1479720397.535321 0.000070 0.000070</div><div><b>-   FetchError     http first read error: EOF</b></div><div>-   BackendClose   160 boot.default</div><div>-   Timestamp      Beresp: 1479720457.535409 60.000158 60.000088</div><div>-   Timestamp      Error: 1479720457.535417 60.000165 0.000008</div><div>-   BerespProtocol HTTP/1.1</div><div>-   BerespStatus   503</div><div>-   BerespReason   Service Unavailable</div><div>-   BerespReason   Backend fetch failed</div><div>-   BerespHeader   Date: Mon, 21 Nov 2016 09:27:37 GMT</div><div>-   BerespHeader   Server: Varnish</div><div>-   VCL_call       BACKEND_ERROR</div><div>-   BerespHeader   Content-Type: text/html; charset=utf-8</div><div>-   BerespHeader   Retry-After: 5</div><div>-   VCL_return     deliver</div><div>-   Storage        malloc Transient</div><div>-   ObjProtocol    HTTP/1.1</div><div>-   ObjStatus      503</div><div>-   ObjReason      Backend fetch failed</div><div>-   ObjHeader      Date: Mon, 21 Nov 2016 09:27:37 GMT</div><div>-   ObjHeader      Server: Varnish</div><div>-   ObjHeader      Content-Type: text/html; charset=utf-8</div><div>-   ObjHeader      Retry-After: 5</div><div>-   Length         284</div><div>-   BereqAcct      643 0 643 0 0 0</div><div>-   End</div></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-11-16 12:56 GMT+03:00 Andreas Plesner <span dir="ltr"><<a href="mailto:apj@mutt.dk" target="_blank">apj@mutt.dk</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Wed, Nov 16, 2016 at 12:37:08PM +0300, Ayberk Kimsesiz wrote:<br>
><br>
> We were previously receiving Error 503 in Varnish and then it has fixed<br>
> after the fresh reinstall. But we are getting the same error again. I have<br>
> observed that this appears when Ajax requests increase.<br>
<br>
</span>It's hard to troubleshoot anything without a varnishlog.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Andreas<br>
<br>
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</font></span></blockquote></div><br></div>