Cassandra Management tools?

[Joe Obernberger]

Hi all - curious what tools are folks using to manage large Cassandra 
clusters?  For example, to do tasks such as nodetool cleanup after a 
node or nodes are added to the cluster, or simply rolling start/stops 
after an update to the config or a new version?
We've used puppet before; is that what other folks are using?
Thanks for any suggestions.
-Joe