Intermittent 503's from Varnish

[Rob S]

Can you send the varnishlog for one of these failing requests?  Is
this a POST or a GET request?  Are you using default VCL, or can you
send the VCL you are using?

Rob
On Fri, Nov 4, 2011 at 6:44 PM, Gresens, August <AGresens at scholastic.com> wrote:
> Hello
>
>
>
> We’re having a very nasty production issue. We’re getting intermittent 503
> from Varnish in front of a healthy backend.
>
>
>
> This seems to happen on cache-miss, but we’re not seeing requests make it to
> the backend. Varnish immediately returns the 503. After the first 503, the
> page can usually be loaded by requesting it a few more times. This seems to
> indicate that there is some condition within Varnish that prevents it from
> hitting the backend that clears up quickly.
>
>
>
> Has anyone seen this issue before? Is there anything we can try?
>
>
>
> This is our startup config:
>
>
>
> DAEMON_OPTS="-a :80 \
>
> -T localhost:6082 \
>
> -f /etc/varnish/default.vcl \
>
> -S /etc/varnish/secret \
>
> -s file,/var/lib/varnish/$INSTANCE/varnish_storage.bin,1G \
>
> -p http_headers=128 \
>
> -p sess_workspace=262144 \
>
> -p connect_timeout=60 \
>
> -p max_restarts=6 \
>
> -p log_hashstring=on \
>
> -p cli_timeout=60 \
>
> -t 0"
>
>
>
> We are on version 2.0.5
>
>
>
> Thanks,
>
>
>
> August
>
>
>
>
>
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