Varnish 503 Service unavailable error

Paras Fadte plfgoa at gmail.com
Thu Dec 17 13:17:06 CET 2009


Hi,

Sometimes I see following  when using varnishlog

*Interrupted  b BackendOpen*

What does it mean and under what condition(s) does it occur ?

Thank you.

-Paras

On Fri, Nov 27, 2009 at 2:58 PM, Tollef Fog Heen
<tfheen at redpill-linpro.com>wrote:

> ]] Paras Fadte
>
> Hi,
>
> |   FetchError  showed  " *no backend connection* "  .  Would playing
> around
> | with "backend probes" rectify this issue if backends are sometimes under
> | load ?
> |   or  would increasing the "connect_timeout"  help ?
>
> «no backend connection» means just that – we failed to find a backend
> connection in time, ran into the maximum number of connections or
> similar.  If the problem is connect_timeout, increasing that further
> might help, yes.
>
> --
> Tollef Fog Heen
> Redpill Linpro -- Changing the game!
> t: +47 21 54 41 73
> _______________________________________________
> varnish-misc mailing list
> varnish-misc at projects.linpro.no
> http://projects.linpro.no/mailman/listinfo/varnish-misc
>
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