Hi all,
In our setup we have 2 varnishes next in parallel.
If one of them gets a question which it cannot serve it will 'ask' the
other first. If the other also doesn't have the object the question goes
through to the backend servers.
This works fine with as side effect is that we get a 'Via 1.1 varnish,
1.1 varnish' response header and 2 entries in the X-varnish response as
well.
So far so good. But when I tested the HA parts of our site and
stop/started both varnishes a couple of times the headers have been
increasing rapidly to
'Via 1.1 varnish, 1.1 varnish, 1.1 varnish, 1.1 varnish...'
This is because when the restarted varnish asks its brother the answer
already contains 2 'varnishes'. When restarting the other varnish it
will ask the other one for the object and the headers increase again.
I can probably 'unset' and 'set' the response headers but is there a
better way ?
Regards,
Martin
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