Thank you for that information.
It worked here.
I ran in to a problem as network-manager was removed but not purged.
	
	
	
		
so followed the steps to de-cluster. then after running aptitude purge network-manager was able to add the node.
				
			It worked here.
I ran in to a problem as network-manager was removed but not purged.
		Code:
	
	  Starting cluster:    Checking if cluster has been disabled at boot... [  OK  ]
   Checking Network Manager... 
Network Manager is either running or configured to run. Please disable it in the cluster.
	so followed the steps to de-cluster. then after running aptitude purge network-manager was able to add the node.