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From Ben Bromhead <>
Subject Re: Using an EC2 cluster from the outside.
Date Thu, 18 Apr 2013 01:34:01 GMT
Depending on your client, disable automatic client discovery and just specify a list of all
your nodes in your client configuration.

For more details check out
, obviously this deals specifically with a ruby client but it should be applicable to others.


Instaclustr | | @instaclustr

On 18/04/2013, at 5:43 AM, Robert Coli <> wrote:

> On Wed, Apr 17, 2013 at 12:07 PM, <> wrote:
> I have a working 3 node cluster in a single ec2 region and I need to hit it from our
datacenter. As you'd expect, the client gets the internal addresses of the nodes back. 
> Someone on irc mentioned using the public IP for rpc and binding that address to the
box. I see that mentioned in an old list mail but I don't get exactly how this is supposed
to work. I could really use either a link to something with explicit directions or a detailed
> Should cassandra use the public IPs for everything -- listen, b'cast, and rpc? What should
cassandra.yaml look like? Is the idea to use the public addresses for cassandra but route
the requests between nodes over the lan using nat? 
> Any help or suggestion is appreciated. 
> Google "EC2MultiRegionSnitch".
> =Rob

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