Hi Team, I am installing 15node cluster with HDP 2.4 and unable to proceed with below error: ========================== Creating target directory... ========================== Command start time 2016-11-21 12:12:42 Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password). SSH command execution finished host=xxx, exitcode=255 Command end time 2016-11-21 12:12:42 ERROR: Bootstrap of host hdpmaster01.supermoon.com fails because previous action finished with non-zero exit code (255) ERROR MESSAGE: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password). I followed below steps: Generate public and private SSH keys on the Ambari Server host. ssh-keygen Copy the SSH Public Key (id_rsa.pub) to the root account on your target hosts. .ssh/id_rsa .ssh/id_rsa.pub Add the SSH Public Key to the authorized_keys file on your target hosts. cat id_rsa.pub >> authorized_keys Depending on your version of SSH, you may need to set permissions on the .ssh directory (to 700) and the authorized_keys file in that directory (to 600) on the target hosts. chmod 700 ~/.ssh chmod 600 ~/.ssh/authorized_keys copy authorizedkeys files to all hosts ssh is working without password. selinux is disabled and firewall is off on all nodes and my /etc/hosts file first two lines shows: 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 Please help me in resolving issue. Sridhar ... View more