I am trying to deploy a hadoop cluster using ambari, but when i select the hostnames with FQDN and proceed to configure I get the permission denied error for ssh.
STEPS: 1. generated rsa key using ssh-keygen as root.
But from ambari is failing to do the hadoop installation with below error.
SSH command execution finished
host=XXX, exitcode=255
Command end time 2015-06-23 10:44:07
ERROR: Bootstrap of host XXX fails because previous action finished with non-zero exit code (255)
ERROR MESSAGE: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
STDOUT:
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
Please dont mark this question as a duplicate. I could see other questions with same description but none of them mention about the Ambari ssh permission denied error.
I encountered the same problem with him.
ssh -i <your_keypair> root@<your_host>
I tried this but it wasn't solved.
Here's my solution
host1 ip:192.168.1.21
host2 ip:192.168.1.22
host3 ip:192.168.1.23
on host1:
rm -rf /root/.ssh
ssh-keygen -t dsa
cat /root/.ssh/id_dsa.pub >> /root/.ssh/authorized_keys
scp /root/.ssh/id_dsa.pub host2:/root/
scp /root/.ssh/id_dsa.pub host3:/root/
on host2:
rm -rf /root/.ssh
ssh-keygen -t dsa
cat /root/id_dsa.pub >> /root/.ssh/authorized_keys
on host3:
rm -rf /root/.ssh
ssh-keygen -t dsa
cat /root/id_dsa.pub >> /root/.ssh/authorized_keys
host1:/root/.ssh/id_dsa This's the file which you need.