We store them in a file called .nmorc in your $HOME. My config is in:
/Users/robert/.nmorc
Never expose your nmoconf to untrusted persons, as it contains your node passwords (if your nodes are not in party mode).
First, add your nodes to the cluster (assuming your user/pw is foo/bar) and you want to name your cluster mycluster
:
nmo cluster add node1 http://foo:bar@example.com mycluster nmo cluster add node2 http://foo:bar@example.org mycluster nmo cluster add node3 http://foo:bar@node3.example.org mycluster
Then join them to a cluster:
nmo cluster join mycluster