What are the steps to problem solve when all I can get are 503s?

Bedis 9 bedis9 at gmail.com
Fri Jul 9 08:27:00 CEST 2010


Can you share your VCL conf?


On Fri, Jul 9, 2010 at 7:08 AM, Jacques <whshub at gmail.com> wrote:

> I am trying to use Varnish on OpenSolaris.  Due the help of others, I have
> versions compiling and not crashing that are based on three different
> versions of Varnish.
> I'm using 4516, 2.1.2 with the 649 patch, and trunk.   I've also tried
> compiling with gcc 4.3.3 in addition to the OpenSolaris standard of 3.4.3.
>  That changed nothing.
> All compiled copies of varnish seem to start just fine.  I can use
> varnishlog and see my requests arriving at Varnish.
> However, responses are always 503 with " FetchError: no backend
> connection".  Using tcpdump, I see no calls to the backend server from
> Varnish, ever.
> For simplicity, I'm using the basic start of:
> varnishd -a :80 -b
> What are right steps to determine what is wrong?  I see nothing in syslogs.
>  Varnish doesn't complain.  Using all the same steps on ubuntu, I get
> exactly what I expect, a cached version of the backend server.
> Any pointers about how I should figure out what is failing would be
> helpful.
> Thanks,
> Jacques
> I've also noticed that the cache is starting at 500GB.  Changing the cache
> size to 512MB didn't have any impact on the 503s.
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