This page shows how to terminate a node in a cluster using the command-line
>>> ./EHPC-Client --nodes-terminate -d=DOMAIN_OF_MAIN_NODE -id=AWS_INSTANCE_ID
Example 1
Terminate instance which its ID is ‘i-242c1f6d’ from cluster at ‘ec2....com’
./EHPC-Client --nodes-terminate -d=ec2....com -id=i-242c1f6d
Output
Machine is shutting down....