Add test_network_policy_add_remove_pod
- Create a service and check connectivity to the service - Create network policies with a podSelector with labels of the pods in the service as well as for the tester pod and check connectivity to the service - Deleting one of the service pods and creating a new one - Check connectivity to the service and verify only one pod answering - Create a new pod with the same label as the one we deleted - Check connectivity to the service, expecting two pods answering Also adds an option to create_network_policy to apply a rule to allow traffic only from pods with specific labels Change-Id: Ibf8113d9667c02a1b6d080aa50e91fde0809fd75 Depends-On: If23b311ed07578b3fbe85f46aa4a314e6a05b7f3
This commit is contained in:
Itzik Brown
parent
d07fefba07
commit
28fbe115eb
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@ -93,7 +93,9 @@ class BaseKuryrScenarioTest(manager.NetworkScenarioTest):
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ingress_ipblock_except=[],
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egress_port=None, egress_port_protocol='TCP',
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egress_ipblock_cidr=None,
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egress_ipblock_except=[]):
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egress_ipblock_except=[],
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ingress_match_expressions=None,
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egress_match_expressions=None):
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if not name:
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name = data_utils.rand_name(prefix='kuryr-network-policy')
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np = k8s_client.V1NetworkPolicy()
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@ -101,15 +103,15 @@ class BaseKuryrScenarioTest(manager.NetworkScenarioTest):
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np.api_version = 'networking.k8s.io/v1'
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np.metadata = k8s_client.V1ObjectMeta(name=name,
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namespace=namespace)
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to, _from = None, None
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to, _from = [], []
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if egress_ipblock_cidr:
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to = [k8s_client.V1NetworkPolicyPeer(
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to.append(k8s_client.V1NetworkPolicyPeer(
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ip_block=k8s_client.V1IPBlock(cidr=egress_ipblock_cidr,
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_except=egress_ipblock_except))]
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_except=egress_ipblock_except)))
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if ingress_ipblock_cidr:
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_from = [k8s_client.V1NetworkPolicyPeer(
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_from.append(k8s_client.V1NetworkPolicyPeer(
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ip_block=k8s_client.V1IPBlock(cidr=ingress_ipblock_cidr,
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_except=ingress_ipblock_except))]
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_except=ingress_ipblock_except)))
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if ingress_port:
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ingress_port = [k8s_client.V1NetworkPolicyPort(
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port=ingress_port, protocol=ingress_port_protocol)]
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@ -117,6 +119,14 @@ class BaseKuryrScenarioTest(manager.NetworkScenarioTest):
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egress_port = [k8s_client.V1NetworkPolicyPort(
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port=egress_port, protocol=egress_port_protocol)]
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if ingress_match_expressions:
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_from.append(k8s_client.V1NetworkPolicyPeer(
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pod_selector=k8s_client.V1LabelSelector(
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match_expressions=ingress_match_expressions)))
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if egress_match_expressions:
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to.append(k8s_client.V1NetworkPolicyPeer(
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pod_selector=k8s_client.V1LabelSelector(
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match_expressions=egress_match_expressions)))
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np.spec = k8s_client.V1NetworkPolicySpec(
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egress=[k8s_client.V1NetworkPolicyEgressRule(
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ports=egress_port,
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@ -746,6 +756,10 @@ class BaseKuryrScenarioTest(manager.NetworkScenarioTest):
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return [pod.metadata.name for pod in self.get_pod_list(
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namespace=namespace, label_selector=label_selector)]
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def get_pod_ip_list(self, namespace='default', label_selector=''):
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return [pod.status.pod_ip for pod in self.get_pod_list(
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namespace=namespace, label_selector=label_selector)]
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def get_controller_pod_names(self):
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controller_label = CONF.kuryr_kubernetes.controller_label
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controller_pod_names = self.get_pod_name_list(
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@ -1200,21 +1214,43 @@ class BaseKuryrScenarioTest(manager.NetworkScenarioTest):
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def check_service_internal_connectivity(self, service_port='80',
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protocol='TCP',
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namespace='default',
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labels=None,
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pod_num=None,
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pod_name=None,
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cleanup=True):
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"""Verify client pod to service connectivity
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Create a pod unless a value for the pod_name parameter is provided and
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check connectivity to a service from that pod.
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:param service_port - The port of the service we check
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:param protocol - The service protocol we check
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:namespace - The namespace of the client pod
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:param labels - The labels of the client pod
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:param pod_num - The number of pods expected to serve the service
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:param pod_name - If supplied no pod will be created and instead a pod
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with this name will be used
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:param cleanup - Whether to add a cleanup function for the created pod
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:returns: The name of the client pod that was created or passed to
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the function
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"""
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# FIXME(itzikb): Use the clusterIP to
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# check service status as there are some issues with the FIPs
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# and OVN gates
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clusterip_svc_ip = self.get_service_ip(self.service_name,
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spec_type='ClusterIP',
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namespace=namespace)
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pod_name, pod = self.create_pod(namespace=namespace)
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if cleanup:
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self.addClassResourceCleanup(self.delete_pod, pod_name,
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namespace=namespace)
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pod_num = pod_num or self.pod_num
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if not pod_name:
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pod_name, _ = self.create_pod(namespace=namespace, labels=labels)
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if cleanup:
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self.addClassResourceCleanup(self.delete_pod, pod_name,
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namespace=namespace)
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self.assert_backend_amount_from_pod(
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clusterip_svc_ip,
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self.pod_num,
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pod_num,
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pod_name,
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service_port,
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protocol,
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namespace_name=namespace)
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return pod_name
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@ -27,7 +27,7 @@ from kuryr_tempest_plugin.tests.scenario import consts
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LOG = logging.getLogger(__name__)
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CONF = config.CONF
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TIMEOUT_PERIOD = 120
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TIMEOUT_PERIOD = 180
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class TestNetworkPolicyScenario(base.BaseKuryrScenarioTest):
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@ -39,6 +39,59 @@ class TestNetworkPolicyScenario(base.BaseKuryrScenarioTest):
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raise cls.skipException('Network Policy driver and handler must '
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'be enabled to run this tests')
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def get_sg_rules_for_np(self, namespace, network_policy_name):
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start = time.time()
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while time.time() - start < TIMEOUT_PERIOD:
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try:
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time.sleep(1)
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sg_id, _ = self.get_np_crd_info(name=network_policy_name,
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namespace=namespace)
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if sg_id:
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break
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except kubernetes.client.rest.ApiException:
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continue
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self.assertIsNotNone(sg_id)
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return self.list_security_group_rules(sg_id)
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def check_sg_rules_for_np(self, namespace, np,
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ingress_cidrs_should_exist=(),
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egress_cidrs_should_exist=(),
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ingress_cidrs_shouldnt_exist=(),
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egress_cidrs_shouldnt_exist=()):
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ingress_cidrs_found = set()
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egress_cidrs_found = set()
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ingress_cidrs_should_exist = set(ingress_cidrs_should_exist)
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egress_cidrs_should_exist = set(egress_cidrs_should_exist)
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ingress_cidrs_shouldnt_exist = set(ingress_cidrs_shouldnt_exist)
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egress_cidrs_shouldnt_exist = set(egress_cidrs_shouldnt_exist)
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rules_match = False
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start = time.time()
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while ((not rules_match) and (time.time() - start < TIMEOUT_PERIOD)):
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sg_rules = self.get_sg_rules_for_np(namespace, np)
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for rule in sg_rules:
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if rule['direction'] == 'ingress':
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ingress_cidrs_found.add(rule['remote_ip_prefix'])
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elif rule['direction'] == 'egress':
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egress_cidrs_found.add(rule['remote_ip_prefix'])
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if (ingress_cidrs_should_exist.issubset(ingress_cidrs_found)
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and (not ingress_cidrs_shouldnt_exist
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or not ingress_cidrs_shouldnt_exist.issubset(
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ingress_cidrs_found))
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and egress_cidrs_should_exist.issubset(egress_cidrs_found)
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and (not egress_cidrs_shouldnt_exist
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or not egress_cidrs_shouldnt_exist.issubset(
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egress_cidrs_found))):
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rules_match = True
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else:
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time.sleep(10)
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if not rules_match:
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msg = 'Timed out waiting sg rules for np %s to match' % np
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raise lib_exc.TimeoutException(msg)
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@decorators.idempotent_id('a9db5bc5-e921-4719-8201-5431537c86f8')
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@decorators.unstable_test(bug="1860554")
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def test_ipblock_network_policy_sg_rules(self):
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@ -374,3 +427,136 @@ class TestNetworkPolicyScenario(base.BaseKuryrScenarioTest):
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time.sleep(1)
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if time.time() - start >= TIMEOUT_PERIOD:
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raise lib_exc.TimeoutException('Sec group ID still exists')
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@decorators.idempotent_id('a93b5bc5-e931-4719-8201-54315c5c86f8')
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def test_network_policy_add_remove_pod(self):
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np_name_server = 'allow-all-server'
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np_name_client = 'allow-all-client'
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server_label = {'app': 'server'}
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client_label = {'app': 'client'}
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namespace_name, namespace = self.create_namespace()
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self.addCleanup(self.delete_namespace, namespace_name)
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self.create_setup_for_service_test(label='server',
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namespace=namespace_name,
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cleanup=False)
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LOG.debug("A service %s and two pods were created in namespace %s",
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self.service_name, namespace_name)
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service_pods = self.get_pod_list(namespace=namespace_name,
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label_selector='app=server')
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service_pods_cidrs = [pod.status.pod_ip+'/32' for pod in service_pods]
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(first_server_pod_cidr, first_server_pod_name) = (
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service_pods[0].status.pod_ip+"/32",
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service_pods[0].metadata.name)
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client_pod_name = self.check_service_internal_connectivity(
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namespace=namespace_name,
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labels=client_label,
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cleanup=False)
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client_pod_ip = self.get_pod_ip(client_pod_name,
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namespace=namespace_name)
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client_pod_cidr = client_pod_ip + "/32"
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LOG.debug("Client pod %s was created", client_pod_name)
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LOG.debug("Connection to service %s from %s was successful",
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self.service_name, client_pod_name)
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# Check connectivity in the same namespace
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connect_to_service_cmd = ["/bin/sh", "-c", "curl {dst_ip}".format(
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dst_ip=self.service_ip)]
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blocked_pod, _ = self.create_pod(namespace=namespace_name)
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self.assertIn(consts.POD_OUTPUT,
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self.exec_command_in_pod(blocked_pod,
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connect_to_service_cmd,
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namespace_name))
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pods_server_match_expression = {'key': 'app',
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'operator': 'In',
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'values': ['server']}
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pods_client_match_expression = {'key': 'app',
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'operator': 'In',
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'values': ['client']}
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np_server = self.create_network_policy(
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name=np_name_server,
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namespace=namespace_name,
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match_labels=server_label,
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ingress_match_expressions=[pods_client_match_expression],
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egress_match_expressions=[pods_client_match_expression])
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LOG.debug("Network policy %s with match expression %s was created",
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np_server, pods_server_match_expression)
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self.addCleanup(self.delete_network_policy, np_server.metadata.name,
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namespace_name)
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np_client = self.create_network_policy(
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name=np_name_client,
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namespace=namespace_name,
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match_labels=client_label,
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ingress_match_expressions=[pods_server_match_expression],
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egress_match_expressions=[pods_server_match_expression])
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LOG.debug("Network policy %s with match expression %s was created",
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np_client, pods_client_match_expression)
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self.addCleanup(self.delete_network_policy, np_client.metadata.name,
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namespace_name)
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self.check_sg_rules_for_np(
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namespace_name, np_name_server,
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ingress_cidrs_should_exist=[client_pod_cidr],
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egress_cidrs_should_exist=[client_pod_cidr],
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ingress_cidrs_shouldnt_exist=[],
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egress_cidrs_shouldnt_exist=[])
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self.check_sg_rules_for_np(
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namespace_name, np_name_client,
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ingress_cidrs_should_exist=service_pods_cidrs,
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egress_cidrs_should_exist=service_pods_cidrs,
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ingress_cidrs_shouldnt_exist=[],
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egress_cidrs_shouldnt_exist=[])
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self.check_service_internal_connectivity(namespace=namespace_name,
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pod_name=client_pod_name)
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LOG.debug("Connection to service %s from %s was successful after "
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"network policy was applied",
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self.service_name, client_pod_name)
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# Check no connectivity from a pod not in the NP
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self.assertNotIn(consts.POD_OUTPUT,
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self.exec_command_in_pod(blocked_pod,
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connect_to_service_cmd,
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namespace_name))
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self.delete_pod(first_server_pod_name, namespace=namespace_name)
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LOG.debug("Deleted pod %s from service %s",
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first_server_pod_name, self.service_name)
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self.verify_lbaas_endpoints_configured(self.service_name,
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1, namespace_name)
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self.check_service_internal_connectivity(namespace=namespace_name,
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pod_name=client_pod_name,
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pod_num=1)
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LOG.debug("Connection to service %s with one pod from %s was "
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"successful", self.service_name, client_pod_name)
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pod_name, pod = self.create_pod(labels=server_label,
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namespace=namespace_name)
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LOG.debug("Pod server %s with label %s was created",
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pod_name, server_label)
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self.verify_lbaas_endpoints_configured(self.service_name,
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2, namespace_name)
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service_pods = self.get_pod_list(namespace=namespace_name,
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label_selector='app=server')
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service_pods_cidrs = [pod.status.pod_ip+'/32' for pod in service_pods]
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self.check_sg_rules_for_np(
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namespace_name, np_name_server,
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ingress_cidrs_should_exist=[client_pod_cidr],
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egress_cidrs_should_exist=[client_pod_cidr],
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ingress_cidrs_shouldnt_exist=[],
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egress_cidrs_shouldnt_exist=[])
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self.check_sg_rules_for_np(
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namespace_name, np_name_client,
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ingress_cidrs_should_exist=service_pods_cidrs,
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egress_cidrs_should_exist=service_pods_cidrs,
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ingress_cidrs_shouldnt_exist=[
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first_server_pod_cidr],
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egress_cidrs_shouldnt_exist=[
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first_server_pod_cidr])
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self.check_service_internal_connectivity(namespace=namespace_name,
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pod_name=client_pod_name)
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LOG.debug("Connection to service %s from %s was successful",
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self.service_name, client_pod_name)
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# Check no connectivity from a pod not in the NP
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self.assertNotIn(consts.POD_OUTPUT,
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self.exec_command_in_pod(blocked_pod,
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connect_to_service_cmd,
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namespace_name))
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