Thanks for your response .Kindly find the below comments -> Can you check user has sudo/root permissions on these hosts? --> Sudo is working fine and permissions looks ok -> Can you do agent hard restart on these hosts and try? --> Rebooted the box -> recheck private key is valid and correct one. --> Yes, able to do login using the key from OS level (between the hosts) But still the issue persists .Kindly advice  ... View more