I try to deploy hadoop with non-root user through Ambari. I have already setup Ambari server successfully and deploying hadoop on Ambari web interface.On step 'Install Options', if I set the SSH User Account with ROOT,then I can go to the next step,but when I replace with my non-root user, then waiting for quite a time and finally shows the status 'Failed' message as below: ========================== Creating target directory... ========================== Command start time 2016-04-14 14:44:13 Automatic Agent registration timed out (timeout = 300 seconds). Check your network connectivity and retry registration, or use manual agent registration. I have already set SSH free password login on root and non-root users and other essential configuration as well.Besides, I can pass the step 'Install Options' with root. Thus ,I'm quite sure that Non-root user fail the step because of lacking authority but don't know how to fix it. Anyone has some suggestions? Thanks. ... View more