def create_cluster(args):
"""Create a cluster and start all its nodes.
"""
conf = config.Config()
if args.name in conf.clusters:
logging.error("Cluster `%s` already exists", args.name)
return 1
network = ipaddress.ip_network(u"%s" % (args.flannel_network,))
subnet_length = args.flannel_subnet_length
subnet_min = ipaddress.ip_network(u"%s/%d" % (args.flannel_subnet_min, subnet_length))
subnet_max = ipaddress.ip_network(u"%s/%d" % (args.flannel_subnet_max, subnet_length))
services_ip_range = ipaddress.ip_network(u"%s" % (args.services_ip_range,))
dns_service_ip = ipaddress.ip_address(u"%s" % (args.dns_service_ip,))
kubernetes_service_ip = ipaddress.ip_address(u"%s" % (args.kubernetes_service_ip,))
for net in (subnet_min, subnet_max):
if net.prefixlen != subnet_length:
logging.error("Network %s is not a /%d network", net, subnet_length)
return 1
if not net.subnet_of(network):
logging.error("Network %s is not a subnet of %s", net, network)
return 1
if services_ip_range.overlaps(network):
logging.error("Service IP range %s overlaps with network %s", services_ip_range, network)
return 1
if dns_service_ip not in services_ip_range:
logging.error("DNS service IP address %s not in service IP range %s", dns_service_ip, services_ip_range)
return 1
if kubernetes_service_ip not in services_ip_range:
logging.error(
"Kubernetes API IP address %s not in service IP range %s", kubernetes_service_ip, services_ip_range
)
return 1
provider = get_provider(args.provider)
core.create_cluster(
args.name,
args.channel,
args.num_etcd,
args.size_etcd,
args.num_workers,
args.size_workers,
provider,
args.location,
network,
subnet_length,
subnet_min,
subnet_max,
services_ip_range,
dns_service_ip,
kubernetes_service_ip,
conf,
)
cluster_up(args)
return provision_cluster(args)
def mock_cluster(scope="function"):
home = tempfile.mkdtemp(prefix="container-cluster-test-")
conf = Config(home)
provider = providers.get_provider("mockprovider")
cluster = core.create_cluster("test-cluster1", "alpha", 3, "512mb", 4,
"1gb", provider, "lon1",
ipaddress.ip_network(u"172.16.0.0/16"), 24,
ipaddress.ip_network(u"172.16.1.0"),
ipaddress.ip_network(u"172.16.254.0"),
ipaddress.ip_network(u"172.17.0.0/24"),
ipaddress.ip_address(u"172.17.0.10"),
ipaddress.ip_address(u"172.17.0.1"), conf)
with cluster.provider.ssh_server:
yield cluster
def create_cluster(args):
"""Create a cluster and start all its nodes.
"""
conf = config.Config()
if args.name in conf.clusters:
logging.error("Cluster `%s` already exists", args.name)
return 1
network = ipaddress.ip_network(u"%s" % (args.flannel_network, ))
subnet_length = args.flannel_subnet_length
subnet_min = ipaddress.ip_network(u"%s/%d" %
(args.flannel_subnet_min, subnet_length))
subnet_max = ipaddress.ip_network(u"%s/%d" %
(args.flannel_subnet_max, subnet_length))
services_ip_range = ipaddress.ip_network(u"%s" %
(args.services_ip_range, ))
dns_service_ip = ipaddress.ip_address(u"%s" % (args.dns_service_ip, ))
kubernetes_service_ip = ipaddress.ip_address(
u"%s" % (args.kubernetes_service_ip, ))
for net in (subnet_min, subnet_max):
if net.prefixlen != subnet_length:
logging.error("Network %s is not a /%d network", net,
subnet_length)
return 1
if not net.subnet_of(network):
logging.error("Network %s is not a subnet of %s", net, network)
return 1
if services_ip_range.overlaps(network):
logging.error("Service IP range %s overlaps with network %s",
services_ip_range, network)
return 1
if dns_service_ip not in services_ip_range:
logging.error("DNS service IP address %s not in service IP range %s",
dns_service_ip, services_ip_range)
return 1
if kubernetes_service_ip not in services_ip_range:
logging.error(
"Kubernetes API IP address %s not in service IP range %s",
kubernetes_service_ip, services_ip_range)
return 1
provider = get_provider(args.provider)
core.create_cluster(args.name, args.channel, args.num_etcd, args.size_etcd,
args.num_workers, args.size_workers, provider,
args.location, network, subnet_length, subnet_min,
subnet_max, services_ip_range, dns_service_ip,
kubernetes_service_ip, conf)
cluster_up(args)
return provision_cluster(args)
def mock_cluster(scope="function"):
home = tempfile.mkdtemp(prefix="container-cluster-test-")
conf = Config(home)
provider = providers.get_provider("mockprovider")
cluster = core.create_cluster("test-cluster1", "alpha", 3, "512mb", 4,
"1gb", provider, "lon1",
ipaddress.ip_network(u"172.16.0.0/16"), 24,
ipaddress.ip_network(u"172.16.1.0"),
ipaddress.ip_network(u"172.16.254.0"),
ipaddress.ip_network(u"172.17.0.0/24"),
ipaddress.ip_address(u"172.17.0.10"),
ipaddress.ip_address(u"172.17.0.1"), conf)
with cluster.provider.ssh_server:
yield cluster
