[Beowulf] warewulf - cannot log into nodes

[Duke Nguyen]

Hi folks,

So I was able to try warewulf to boot up our nodes following this guide: 
http://hpc.admin-magazine.com/Articles/Warewulf-Cluster-Manager-Master-and-Compute-Nodes. 
I got everything running up to the final step: log into node. The node 
(192.168.200.2) is up, showing up log in screen on the connected 
monitor, but I cannot log in. Any idea what should be the default 
username/password, or a step that I might have missed to set up those infos?

Thanks,

D.