Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 28879 invoked from network); 5 Dec 2010 11:50:12 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 5 Dec 2010 11:50:12 -0000 Received: (qmail 75050 invoked by uid 500); 5 Dec 2010 11:50:10 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 74923 invoked by uid 500); 5 Dec 2010 11:50:09 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 74915 invoked by uid 99); 5 Dec 2010 11:50:09 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 05 Dec 2010 11:50:09 +0000 X-ASF-Spam-Status: No, hits=2.2 required=10.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: local policy) Received: from [209.85.216.44] (HELO mail-qw0-f44.google.com) (209.85.216.44) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 05 Dec 2010 11:50:04 +0000 Received: by qwg5 with SMTP id 5so10236268qwg.31 for ; Sun, 05 Dec 2010 03:49:42 -0800 (PST) Received: by 10.229.213.202 with SMTP id gx10mr3187537qcb.290.1291549782372; Sun, 05 Dec 2010 03:49:42 -0800 (PST) MIME-Version: 1.0 Received: by 10.229.74.203 with HTTP; Sun, 5 Dec 2010 03:49:22 -0800 (PST) In-Reply-To: References: From: =?UTF-8?Q?Utku_Can_Top=C3=A7u?= Date: Sun, 5 Dec 2010 12:49:22 +0100 Message-ID: Subject: Re: Replacing nodes of the cluster in 0.7.0-RC1 To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=00163630f835fcf3cf0496a85d51 --00163630f835fcf3cf0496a85d51 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Since no reply came in afew days, I tried my proposed steps and it all worked fine. Just to let you know. On Sat, Dec 4, 2010 at 10:31 PM, Utku Can Top=C3=A7u wr= ote: > Hi All, > > I'm currently not happy with the hardware and the operating system of our > 4-node cassandra cluster. I'm planning to move the cluster to a different > hardware/OS architecture. > > For this purpose I'm planning to bring up 4 new nodes, so that each node > will be a replacement of another node in the current cluster. I would als= o > like to note that the IP adresses will be also changing. > > As far as I remember, cassandra had been causing problems when there was = an > IP change back in version 0.6? > > So what steps should I take to achieve this? > > Will s straight forward approach like this work?, > * drain all nodes > * copy the data files to new hosts > * change configration, seeds, datadir, tokens etc... > * bring up the cluster > > Regards, > Utku > --00163630f835fcf3cf0496a85d51 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Since no reply came in afew days, I tried my proposed steps and it all work= ed fine.

Just to let you know.

On = Sat, Dec 4, 2010 at 10:31 PM, Utku Can Top=C3=A7u <utku@topcu.gen.tr> wrote:
=C2=A0Hi All,
=
I'm currently not happy with the hardware and the operating system = of our 4-node cassandra cluster. I'm planning to move the cluster to a = different hardware/OS architecture.

For this purpose I'm planning to bring up 4 new nodes, so that each= node will be a replacement of another node in the current cluster. I would= also like to note that the IP adresses will be also changing.

As far as I remember, cassandra had been causing problems when there wa= s an IP change back in version 0.6?

So what steps should I take to a= chieve this?

Will s straight forward approach like this work?,
* drain all nodes
* copy the data files to new hosts
* change configr= ation, seeds, datadir, tokens etc...
* bring up the cluster

Regar= ds,
Utku

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