An essential step is to enable password less authentication for the eucalyptus user on all the controllers.

Repeat the following operation for each walrus (WS3) and cluster (CC) controller servers:

1. On the target (CC or WS3) Controller, temporarily set a password for the eucalyptus user:

   sudo passwd eucalyptus

2. Then, on the Cloud Controller (CLC):

   sudo -u eucalyptus ssh-copy-id -i ~eucalyptus/.ssh/id_rsa.pub eucalyptus@<IP_OF_TARGET>

3. You can now remove the password of the eucalyptus account on the target:

   sudo passwd -d eucalyptus