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From Jonathan Colby <>
Subject Re: Virtual IP / hardware load balancing for cassandra nodes
Date Mon, 20 Dec 2010 17:28:36 GMT
Thanks guys.   
On Dec 20, 2010, at 5:44 PM, Dave Viner wrote:

> You can put a Cassandra cluster behind a load balancer.  One thing to be cautious of
is the health check.  Just because the node is listening on port 9160 doesn't mean that it's
healthy to serve requests.  It is required, but not sufficient.
> The real test is the JMX values.  
> Dave Viner
> On Mon, Dec 20, 2010 at 6:25 AM, Jonathan Colby <> wrote:
> I was unable to find example or documentation on my question.  I'd like to know what
the best way to group a cluster of cassandra nodes behind a virtual ip.
> For example, can cassandra nodes be placed behind a Citrix Netscaler hardware load balancer?
> I can't imagine it being a problem, but in doing so would you break any cassandra functionality?
> The goal is to have the application talk to a single virtual ip  and be directed to a
random node in the cluster.
> I heard a little about adding the node addresses to Hector's load-balancing mechanism,
but this doesn't seem too robust or easy to maintain.
> Thanks in advance.

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