Zookeeper

echo ${term} |netcat localhost 2181

conf    Shows the currently used configuration of zookeeper
cons    List full connection/session details for all clients connected to this server.
crst    Resets the counters for the cons commands
dump    Lists the outstanding sessions and ephemeral nodes. The output on the leader has more information than the one on followers
ruok    Give a "imok" back if the server is running fine
srvr    Lists full details for the server. mntr is more verbose
stat    short status overview of the server
mntr    Outputs a list of variables that could be (and is) used for monitoring the health of the cluster.