something i have discovered with NS8 in cluster mode is that
SOme commands are required to be run on the cluster admin
while some other commands are required to be run on the node in question.
Once you add new servers to cluster admin, you can no longer install or remove apps from the given server, but only through cluster admin.
While if you want to ssh module@localhost you have to be in the node itself.
if you run the same from the cluster admin, youre asked for a password of the module, which i have no idea what it is and where it is.