Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
Reply-To: user@cassandra.apache.org
Received-SPF: pass (athena.apache.org: local policy)
DomainKey-Signature: a=rsa-sha1; c=nofws; d=thelastpickle.com; h=content-type
	:mime-version:subject:from:in-reply-to:date
	:content-transfer-encoding:message-id:references:to; q=dns; s=
	thelastpickle.com; b=Cspi5tps3og3DkxIa7O/1OQyKXl5zkyCUzYRoH+INDV
	i1parQZoW/UQ53Bvr/MSlHHUxT1TKARyQ2jrVT5R81Aut3pg+/hUMFqom3YZv5re
	AYn2esJZNLvNdFT6HyCf7sI0wtuZYwnMzhIlScpL7SBiJQBeR/tWNsnT/phMe3ug
	=
Content-Type: text/plain; charset=iso-8859-1
Mime-Version: 1.0 (Apple Message framework v1257)
Subject: Re: running two rings on the same subnet
From: aaron morton <aaron@thelastpickle.com>
In-Reply-To: 
 <CABZP+MTGgnnYt3zr4zJ6OpxwpW4OFz1vz8-SqCzkgLmVm4FFvw@mail.gmail.com>
Date: Mon, 5 Mar 2012 23:37:47 +1300
Content-Transfer-Encoding: quoted-printable
Message-Id: <E698F6CE-CDB2-427B-A7AD-2602C15692A0@thelastpickle.com>
References: 
 <CABZP+MTGgnnYt3zr4zJ6OpxwpW4OFz1vz8-SqCzkgLmVm4FFvw@mail.gmail.com>
To: user@cassandra.apache.org

> Would the rings be separate?
Yes.=20
But I would recommend you give them different cluster names. It's a good =
protections against nodes accidentally  joining the wrong cluster.=20

cheers
-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com

On 5/03/2012, at 11:06 PM, Tamar Fraenkel wrote:

> Hi!
> I have a Cassandra  cluster with two nodes
>=20
> nodetool ring -h localhost
> Address         DC          Rack        Status State   Load            =
Owns    Token
>                                                                        =
        85070591730234615865843651857942052864
> 10.0.0.19       datacenter1 rack1       Up     Normal  488.74 KB       =
50.00%  0
> 10.0.0.28       datacenter1 rack1       Up     Normal  504.63 KB       =
50.00%  85070591730234615865843651857942052864
>=20
> I want to create a second ring with the same name but two different =
nodes.
> using tokengentool I get the same tokens as they are affected from the =
number of nodes in a ring.
>=20
> My question is like this:
> Lets say I create two new VMs, with IPs: 10.0.0.31 and 10.0.0.11
> In 10.0.0.31 cassandra.yaml I will set
> initial_token: 0
> seeds: "10.0.0.31"
> listen_address: 10.0.0.31
> rpc_address: 0.0.0.0
>=20
> In 10.0.0.11 cassandra.yaml I will set
> initial_token: 85070591730234615865843651857942052864
> seeds: "10.0.0.31"
> listen_address: 10.0.0.11
> rpc_address: 0.0.0.0=20
>=20
> Would the rings be separate?
>=20
> Thanks,
>=20
> Tamar Fraenkel=20
> Senior Software Engineer, TOK Media=20
>=20
> <tokLogo.png>
>=20
> tamar@tok-media.com
> Tel:   +972 2 6409736=20
> Mob:  +972 54 8356490=20
> Fax:   +972 2 5612956=20
>=20
>=20
>=20


-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com