No,  it doesn't work with vnodes.  However it's useful for monitoring the cluster or individual node performance.

On 3 Mar 2013 17:39, "Marco Matarazzo" <marco.matarazzo@hexkeep.com> wrote:
> There's DataStax OpsCenter, which has a free Community Edition: http://www.datastax.com/products/opscenter

Is OpsCenter working with cassandra 1.2 with vnodes already ?

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Marco Matarazzo