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Step by step guide

  1. On your local machine, generate an SSH key, ensuring a good key length and type :

    ssh-keygen -b 4096 -t rsa
  2. Copy the public key from your computer:

    cat ~/.ssh/
  3. Connect to a cluster frontend node (izar, helvetios, fidis, deneb1) and paste the public key in the authorized_keys file:

    mkdir .ssh
    chmod 700 .ssh
    echo 'ssh-rsa AAAAXXX[...]' >> .ssh/authorized_keys

    You should now be able to login without a password on all the clusters including the data nodes.

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