I just download HDP 3.0.1.  I can log into Ambari as maria_dev, but I can't use putty (or Windows 10 ssh) to log in from a terminal (using Virtual Box, here)   I know the root password is hadoop, but when I try to connect, I get the error message "remote side unexpectedly closed network connection."  I tried: ssh maria_dev@localhost -p 4200   I also tried ssh root@localhost -p 4200 -pwd hadoop   ...same error.  I'm never even given the chance to log in as either user, maria_dev nor root, so I can't even enter the password hadoop to change the root password.  Didn't have this problem in HDP 2.5 ... View more