Nutanix is able to accept IPMI commands from the command prompt.  This requires use of the ipmiutil tool.

The following are examples of how to power on and off the nodes using the command line:

Power Up:
ipmiutil reset –u -N node –U username -P password
Example: ipmiutil reset –u -N 192.168.1.1 –U ADMIN -P ADMIN

Power Down:
ipmiutil reset –d -N node –U username -P password
Example: ipmiutil reset –d -N 192.168.1.1 –U ADMIN -P ADMIN