HDP on Linux – Installation Forum

passwordless ssh login

  • #6457

    On localhost, as root, I was able to run the commands:

    ssh-keygen -t dsa -P ” -f ~/.ssh/id_dsa
    cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

    and after this I can ssh to localhost as root without a password prompt.

    I then tried to so the same thing as another user but as this user, when I try to ssh to localhost, I am always required to enter my password.

    Is this expected behavior? Only one user is allowed password-less ssh to a single host?

    Unless I am doing something wrong.

    I think I want the password-less behavior for the root user anyway to support HDP 1.0, but am puzzled why I can’t set up the same for another CentOS user.


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  • Author
  • #6458
    Sasha J

    Most likely you did something wrong…
    However, you do not need to have passwordless acres for all users, root only during the installation and adding nodes.
    Do things a bit simpler:

    just type ssh-keygen and the hit enter for all questions, this will generate id_rsa key pair.
    Then do cat …. >> authorized_keys

    This always works and works for any user on the system…

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