2.3.3.1 ssh-agent under open-ssh

• Start ssh-agent and capture the environment variables in your shell

  % eval `ssh-agent`
  % ssh-add path/to/id_planetlab
  

  and from then you shouldn't be asked for passphrases
• To avoid confirmation of node identity, add

  StrictHostKeyChecking no
  BatchMode yes
  

  to your .ssh/config file