File sshPrivateKey = getInputFile(options, "sshprivatekey");
String hostUserId = CmdUtils.valueOf(options, "hostuserid", "root");
String voldemortRootDirectory = getRequiredString(options, "voldemortroot");
RemoteOperation operation = new SshClusterStopper(hostNames,
sshPrivateKey,
hostUserId,
voldemortRootDirectory,
false);
operation.execute();
}