nodetool help
nodetool status				= Print cluster information (state, load, IDs, ...)
nodetool info				= Print node information (uptime, load, ...)
nodetool describecluster	= Print the name, snitch, partitioner and schema version of a cluster
nodetool version			= Print cassandra version
nodetool ring				= Print information about the token ring
nodetool tablestats | more	= Print statistics on tables