I\'ve followed the installation procedure from here and when I reach the Inspect Role Assignments stage I only see one managed host: localhost.localdo
Looks like Cloudera (possibly recently) added a blurb about this to their documentation. I've been having this problem for a while, and the key for me was getting the following command to give correct results:
$ host -v -t A `hostname`
My soution involved setting up a local DNS server, but perhaps just having the same /etc/hosts on every node would have been sufficient. YMMV.