def is_service_cidr_expansion():
service_cidr_from_db = db.get("kubernetes-master.service-cidr")
service_cidr_from_config = hookenv.config("service-cidr")
if not service_cidr_from_db:
return False
# Do not consider as expansion if both old and new service cidr are same
if service_cidr_from_db == service_cidr_from_config:
return False
current_networks = kubernetes_common.get_networks(service_cidr_from_db)
new_networks = kubernetes_common.get_networks(service_cidr_from_config)
if len(current_networks) != len(new_networks) or not all(
cur.subnet_of(new)
for cur, new in zip(current_networks, new_networks)):
hookenv.log("WARN: New k8s service cidr not superset of old one")
return False
return True
def get_kubernetes_service_ips():
"""Get the IP address(es) for the kubernetes service based on the cidr."""
return [
next(network.hosts()).exploded
for network in kubernetes_common.get_networks(service_cidr())
]