I am trying to enroll my nodes in my MaaS cluster.
I am doing this by booting them from the 12.04 installation CD, and choosing the MAAS installation option.

I'm only trying to set up one node right now. When i do the enrollment process, the node shutsdown, and I see 0 nodes on the MAAS homepage of my master node.

I tried adding the node from the MAAS web gui, when I do this, I get an error on the page that says:

Unable to create Node: Unknown problem encountered with the Cobbler server.

In the cobbler.log is the following:

Tue May  8 20:43:47 2012 - DEBUG | REMOTE maas authorization result: True; user(?)

Tue May  8 20:43:47 2012 - INFO | find_items; ['system']

Tue May  8 20:43:47 2012 - INFO | Exception occured: <class 'cobbler.cexceptions.CX'>

Tue May  8 20:43:47 2012 - INFO | Exception value: 'dns-name duplicated: node1'

Tue May  8 20:43:47 2012 - INFO | Exception Info:

File "/usr/lib/python2.7/dist-packages/cobbler/remote.py", line 1944, in _dispatch

return method_handle(*params)

File "/usr/lib/python2.7/dist-packages/cobbler/remote.py", line 910, in xapi_object_edit

self.modify_system(handle, 'modify_interface', imods, token)

File "/usr/lib/python2.7/dist-packages/cobbler/remote.py", line 827, in modify_system

return self.modify_item("system",object_id,attribute,arg,token)

File "/usr/lib/python2.7/dist-packages/cobbler/remote.py", line 820, in modify_item

return method(arg)

File "/usr/lib/python2.7/dist-packages/cobbler/item_system.py", line 644, in modify_interface

if field == "dnsname"             : self.set_dns_name(value, interface)

File "/usr/lib/python2.7/dist-packages/cobbler/item_system.py", line 288, in set_dns_name

raise CX("dns-name duplicated: %s" % dns_name)

It seems like there is a chicken and egg game being played between dnsmasq's DNS server, and the cobbler's hostname database -- this is just a guess on my part.

Here is the contents of dnsmasq.leases: the MAC addr of node1 is 00:03:47:22:1c:e2

dbuttric@sid:/var/lib/misc$ more dnsmasq.leases 

1336531172 00:03:47:22:1c:e2 192.168.5.119 * *

1336530695 00:90:27:32:3b:53 192.168.5.148 node3 *

1336530676 00:90:27:18:f2:0b 192.168.5.242 node2 *

How can I delete hostnames from cobbler, and retry my node adding activities?

Here is more: I can successfully register a node and the MAAS server shows that it has 1 node registered in it.

5 minutes later, I go back to the MAAS web gui, and it reports 0 nodes. I have not looked at error logs yet, but what can cause this to happen?

Should I just try re-installing the master node?