if keystone.valid() is False:
print 'CRITICAL: Keystone context is invalid'
sys.exit(STATE_CRITICAL)
nova_url = None
if args.nova_url is not None:
nova_url = args.nova_url
nova = NovaClient(keystone, nova_url)
if nova is None:
print 'CRITICAL: Could not create nova context'
sys.exit(STATE_CRITICAL)
service = nova.get_service(args.host, args.binary)
if service is None:
print ('CRITICAL: Could not retrieve status '
'for %s on %s') % (args.binary, args.host)
sys.exit(STATE_CRITICAL)
if service['status'] == 'enabled':
status = 'CRITICAL'
status_code = STATE_CRITICAL
if service['state'] == 'up':
status = 'OK'
status_code = STATE_OK
print ('%s: %s on %s is enabled with '
