[chef] What is the trigger in the UI in order to know when a node from an ami in complete when launched using knife?

[David Montgomery < >]

Hi,

I am using knife to launch an ami from python.  Then I need to execute
a loop the will be checking the UI using PyChef so when the node is
complete..I can do further processing.

So...what is the field that I should be monitoring that 1) if the
field exists and 2) if it does exists goes from one state to another.
i.e. all ready.

Thanks