Hadoop built SSH password-free login

1. Execute ssh-keygen-t RSA and 3 carriage return on Node1 on the/home/username directory.

2. Open the current directory. SSH can see the generated Id_rsa, and id_rsa.pub two files.

3. Perform SCP id_rsa.pub [email Protected]:/home/username/.ssh/authorized_keys (need to create a directory on Node2 with the ssh-keygen-t RSA command before execution).

4. Use Ls-l to check whether the permissions on the Authorized_keys generated on Node2 are-rw-r--r--, if not, modify the permissions with Chmod 644.

5. Test the login under Node1 Node2 can be password-free login.

Hadoop built SSH password-free login