This is my error while doing bootstrap , the status of nodes i added were declared and now i have accept and commising and it says comminsing started , i need help please ..

clusteruser@cluster:~$ juju status

2012-08-04 22:27:03,367 INFO Connecting to environment...

2012-08-04 22:27:04,945 ERROR juju environment not found: is the environment bootstrapped?

clusteruser@cluster:~$ juju bootstrap

2012-08-04 22:27:10,493 INFO Bootstrapping environment 'maas' (origin: distro type: maas)...

2012-08-04 22:27:10,923 ERROR No matching node is available.

i am doing my work through vmware
the way i am adding node is as follow
1- Mount the cd iso image
2- Boot to bios then select network boot
3-Then proceed installation and node is added in declared
4- then i accept and commision and node status changes to commising state

But how the status is changed to ready state? I have 4 node added and none of them is in ready