Varnish return 503 (no backend connection) and never can back

Per Buer perbu at
Fri Jul 12 10:06:36 CEST 2013

On Thu, Jul 11, 2013 at 10:11 PM, Fabio Gomes dos Santos <
supergrilo at> wrote:

> i have a problem using varnish 3.0 and debian wheezy. When i use backend
> on command line, everything works. If i use init script, after some
> connections varnish return 503 and never can back. Backend is not a sick
> mode, health check still return 200, varnishlog only retorns  '4 FetchError
>   c no backend connection'.
Are you using saintmode? If so, you might want to try to set
saintmode_threshold to 0. Saintmode will kick in and make a backend sort of
sick. And if I recall correctly it does this without logging it.

 <> *Per Buer*
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