PURGING objects on multiple instances of varnish

[Stephen Wood]

Generally speaking, the varnish setup you are describing would use a hash
director and not round-robin, so that the object would only be cached on
one of your varnish nodes and therefore only require a single purge request.

If your object lives on multiple nodes, then you could do something simple
like send a HTTP request to *every* one of your hosts. This would require
you to keep a list of your hosts and also create the appropriate
permissions on all of your varnish instances:

$ for i in `cat varnish_host.list`; do curl -XPURGE http://$i/object;done

I hope that helps. Maybe somebody can offer a better solution than myself.

On Tue, May 28, 2013 at 2:17 PM, Puneet <puneet.arora at insticator.com> wrote:

> Hi All,****
>
> ** **
>
> I am using a Load Balancer (LB) in front of Varnish instances. Just say
> the LB is listening on Port: 80 and there are multiple instances of Varnish
> on different port nos.****
>
> i.e. I have a single LB which is connected to 4 instances of varnish, and
> LB is executing in a round-robin fashion. ****
>
> ** **
>
> Now, how can I purge objects on Varnish and maintain consistency among
> different instances of Varnish.****
>
> ** **
>
> Thanks****
>
> Puneet****
>
> ** **
>
> ** **
>
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