Open Stack

For "ironic node-create" , what are the values that has to be given for 
"pxe_deploy_kernel" and "pxe_deploy_ramdisk"?

It was given that:
----- 'pxe_deploy_kernel': _("UUID (from Glance) of the deployment 
kernel. " and
------'pxe_deploy_ramdisk': _("UUID (from Glance) of the ramdisk that 
is mounted at boot time. Required.")"

is there any command to get possible values of 'pxe_deploy_kernel' & 
'pxe_deploy_ramdisk'?
Thanks a lot in advance.