503 Backend fetch failed / (again)

[Ayberk Kimsesiz]

Hi Geoff,

Thank you for your suggestion.  My current settings:

backend default {
  .host = "IP";
  .port = "8080";
  .connect_timeout = 60s;
  .first_byte_timeout = 60s;
  .between_bytes_timeout = 60s;
  .max_connections = 800;

}

The log screen: http://i.imgur.com/RixRgM3.png


And the *http first read error: EOF*  continues.

Thanks.


​


2016-11-21 13:53 GMT+03:00 Geoff Simmons <geoff at uplex.de>:

> On 11/21/2016 10:34 AM, Ayberk Kimsesiz wrote:
> >
> > Varnishlog:  *FetchError     http first read error: EOF*
>
> That's a first byte timeout.
>
> > *-   FetchError     http first read error: EOF* -   BackendClose
> > 160 boot.default -   Timestamp      Beresp: 1479720457.535409
> > 60.000158 60.000088 -   Timestamp      Error: 1479720457.535417
> > 60.000165 0.000008
>
> The Timestamp is telling you (2nd and 3rd numbers after
> Timestamp:Beresp) that your backend "boot.default" didn't send a
> response for 60 seconds before Varnish gave up, presumably because
> first_byte_timeout=60s.
>
> man vsl(7) tells you how to interpret the Timestamp log entries:
>
> https://www.varnish-cache.org/docs/trunk/reference/vsl.html#timestamps
>
> https://www.varnish-cache.org/docs/trunk/reference/vsl.html#
> backend-fetch-timestamps
>
> So you need to fix your backend.
>
>
> HTH,
> Geoff
> --
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