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From "Edward M. Goldberg" <...@edwardmgoldberg.com>
Subject Re: restore with snapshot
Date Tue, 20 Apr 2010 00:12:50 GMT
This is a very important thread for me also.

I have assumed up to this point in time that the Nodes IP is not part of the
equation at all.

I have assumed that a new node with the exact same data store files an
configuration but with a new IP value can replace that same node.

I will test this out ASAP.  I should not have assumes this is true.

I will report my findings.  ( yes this is a EBS SNAP ).

Edward M. Goldberg
http://myCloudWatcher.com/
e.m.g.


On Mon, Apr 19, 2010 at 12:03 PM, Lee Parker <lee@socialagency.com> wrote:

> I am working on finalizing our backup and restore procedures for a
> cassandra cluster running on EC2. I understand based on the wiki that in
> order to replace a single node, I don't actually need to put data on that
> node.  I just need to bootstrap the new node into the cluster and it will
> get data from the other nodes.  However, would is speed up the process if
> that node already has the data from the node it is replacing?  Also, what do
> I do if the entire cluster goes down?  I am planning to snapshot the data
> each night for each node.  Should I save the system keyspace snapshots?  Is
> it problematic to bring the cluster back up with new ips on each node, but
> the same tokens as before?
>
> Lee Parker
>

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