Am 06.02.2016 um 13:38 schrieb Joerg Streckfuss: > ERROR: Property error: : resources.heat_subnet_01.properties.cidr: : > "10.10.10.0/24" does not validate net_cidr (constraint not found) Okey, i fixed it. Just install python-croniter and restart heat service did it. It's bug: https://bugzilla.redhat.com/show_bug.cgi?id=1293961 Joerg