Comment 16 for bug 458904

Release notes:

Extending an existing Ubuntu Enterprise Cloud may fail during node controller installation started from the ISO with the "Install Ubuntu Enterprise Cloud" option. The Node installation fails with an error message stating that the preseed file cannot be downloaded from the Cluster Controller as the wrong IP address is used to connect to the Cluster Controller.

The workaround is to conduct a standard package installation rather than an ISO installation: Install a default Karmic server and then install the eucalyptus-nc package. Additionally the system's primary ethernet interface needs to be configured as a bridge and the Cloud Controller's eucalyptus user's public ssh key needs to be copied into the Node Controller's eucalyptus user's authorized_keys file. More detailed steps can be found in the UEC Package Install tutorial, Step 3 at https://help.ubuntu.com/community/UEC/PackageInstall.