mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-08-06 09:36:58 +02:00
690 lines
18 KiB
Go
690 lines
18 KiB
Go
/*
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Copyright 2021 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package source
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import (
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"context"
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"testing"
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"github.com/stretchr/testify/require"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"sigs.k8s.io/external-dns/endpoint"
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"k8s.io/client-go/kubernetes/fake"
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)
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// testPodSource tests that various services generate the correct endpoints.
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func TestPodSource(t *testing.T) {
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t.Parallel()
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for _, tc := range []struct {
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title string
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targetNamespace string
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compatibility string
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ignoreNonHostNetworkPods bool
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PodSourceDomain string
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expected []*endpoint.Endpoint
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expectError bool
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nodes []*corev1.Node
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pods []*corev1.Pod
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}{
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{
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"create IPv4 records based on pod's external and internal IPs",
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"",
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"",
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true,
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"",
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[]*endpoint.Endpoint{
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{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"54.10.11.1", "54.10.11.2"}, RecordType: endpoint.RecordTypeA},
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{DNSName: "internal.a.foo.example.org", Targets: endpoint.Targets{"10.0.1.1", "10.0.1.2"}, RecordType: endpoint.RecordTypeA},
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},
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false,
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nodesFixturesIPv4(),
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[]*corev1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod1",
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Namespace: "kube-system",
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node1",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.1",
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod2",
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Namespace: "kube-system",
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node2",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.2",
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},
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},
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},
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},
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{
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"create IPv4 records based on pod's external and internal IPs using DNS Controller annotations",
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"",
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"kops-dns-controller",
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true,
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"",
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[]*endpoint.Endpoint{
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{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"54.10.11.1", "54.10.11.2"}, RecordType: endpoint.RecordTypeA},
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{DNSName: "internal.a.foo.example.org", Targets: endpoint.Targets{"10.0.1.1", "10.0.1.2"}, RecordType: endpoint.RecordTypeA},
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},
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false,
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nodesFixturesIPv4(),
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[]*corev1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod1",
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Namespace: "kube-system",
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Annotations: map[string]string{
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kopsDNSControllerInternalHostnameAnnotationKey: "internal.a.foo.example.org",
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kopsDNSControllerHostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node1",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.1",
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod2",
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Namespace: "kube-system",
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Annotations: map[string]string{
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kopsDNSControllerInternalHostnameAnnotationKey: "internal.a.foo.example.org",
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kopsDNSControllerHostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node2",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.2",
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},
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},
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},
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},
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{
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"create IPv6 records based on pod's external and internal IPs",
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"",
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"",
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true,
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"",
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[]*endpoint.Endpoint{
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{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"2001:DB8::1", "2001:DB8::2"}, RecordType: endpoint.RecordTypeAAAA},
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{DNSName: "internal.a.foo.example.org", Targets: endpoint.Targets{"2001:DB8::1", "2001:DB8::2"}, RecordType: endpoint.RecordTypeAAAA},
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},
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false,
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nodesFixturesIPv6(),
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[]*corev1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod1",
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Namespace: "kube-system",
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node1",
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},
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Status: corev1.PodStatus{
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PodIP: "2001:DB8::1",
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod2",
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Namespace: "kube-system",
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node2",
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},
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Status: corev1.PodStatus{
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PodIP: "2001:DB8::2",
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},
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},
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},
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},
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{
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"create IPv6 records based on pod's external and internal IPs using DNS Controller annotations",
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"",
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"kops-dns-controller",
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true,
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"",
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[]*endpoint.Endpoint{
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{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"2001:DB8::1", "2001:DB8::2"}, RecordType: endpoint.RecordTypeAAAA},
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{DNSName: "internal.a.foo.example.org", Targets: endpoint.Targets{"2001:DB8::1", "2001:DB8::2"}, RecordType: endpoint.RecordTypeAAAA},
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},
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false,
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nodesFixturesIPv6(),
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[]*corev1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod1",
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Namespace: "kube-system",
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Annotations: map[string]string{
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kopsDNSControllerInternalHostnameAnnotationKey: "internal.a.foo.example.org",
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kopsDNSControllerHostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node1",
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},
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Status: corev1.PodStatus{
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PodIP: "2001:DB8::1",
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod2",
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Namespace: "kube-system",
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Annotations: map[string]string{
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kopsDNSControllerInternalHostnameAnnotationKey: "internal.a.foo.example.org",
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kopsDNSControllerHostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node2",
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},
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Status: corev1.PodStatus{
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PodIP: "2001:DB8::2",
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},
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},
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},
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},
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{
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"create records based on pod's target annotation",
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"",
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"",
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true,
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"",
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[]*endpoint.Endpoint{
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{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"208.1.2.1", "208.1.2.2"}, RecordType: endpoint.RecordTypeA},
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{DNSName: "internal.a.foo.example.org", Targets: endpoint.Targets{"208.1.2.1", "208.1.2.2"}, RecordType: endpoint.RecordTypeA},
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},
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false,
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nodesFixturesIPv4(),
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[]*corev1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod1",
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Namespace: "kube-system",
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
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targetAnnotationKey: "208.1.2.1",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node1",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.1",
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod2",
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Namespace: "kube-system",
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
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targetAnnotationKey: "208.1.2.2",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node2",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.2",
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},
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},
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},
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},
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{
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"create multiple records",
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"",
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"",
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true,
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"",
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[]*endpoint.Endpoint{
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{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"54.10.11.1"}, RecordType: endpoint.RecordTypeA},
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{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"2001:DB8::1"}, RecordType: endpoint.RecordTypeAAAA},
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{DNSName: "b.foo.example.org", Targets: endpoint.Targets{"54.10.11.2"}, RecordType: endpoint.RecordTypeA},
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},
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false,
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[]*corev1.Node{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-node1",
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},
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Status: corev1.NodeStatus{
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Addresses: []corev1.NodeAddress{
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{Type: corev1.NodeExternalIP, Address: "54.10.11.1"},
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{Type: corev1.NodeInternalIP, Address: "2001:DB8::1"},
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{Type: corev1.NodeInternalIP, Address: "10.0.1.1"},
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},
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-node2",
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},
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Status: corev1.NodeStatus{
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Addresses: []corev1.NodeAddress{
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{Type: corev1.NodeExternalIP, Address: "54.10.11.2"},
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{Type: corev1.NodeInternalIP, Address: "10.0.1.2"},
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},
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},
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},
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},
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[]*corev1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod1",
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Namespace: "kube-system",
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Annotations: map[string]string{
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hostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node1",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.1",
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod2",
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Namespace: "kube-system",
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Annotations: map[string]string{
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hostnameAnnotationKey: "b.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node2",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.2",
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},
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},
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},
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},
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{
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"pods with hostNetwore=false should be ignored",
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"",
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"",
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true,
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"",
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[]*endpoint.Endpoint{
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{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"54.10.11.1"}, RecordType: endpoint.RecordTypeA},
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{DNSName: "internal.a.foo.example.org", Targets: endpoint.Targets{"10.0.1.1"}, RecordType: endpoint.RecordTypeA},
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},
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false,
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nodesFixturesIPv4(),
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[]*corev1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod1",
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Namespace: "kube-system",
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node1",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.1",
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod2",
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Namespace: "kube-system",
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: false,
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NodeName: "my-node2",
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},
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Status: corev1.PodStatus{
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PodIP: "100.0.1.2",
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},
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},
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},
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},
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{
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"only watch a given namespace",
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"kube-system",
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"",
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true,
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"",
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[]*endpoint.Endpoint{
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{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"54.10.11.1"}, RecordType: endpoint.RecordTypeA},
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{DNSName: "internal.a.foo.example.org", Targets: endpoint.Targets{"10.0.1.1"}, RecordType: endpoint.RecordTypeA},
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},
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false,
|
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nodesFixturesIPv4(),
|
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[]*corev1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
|
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Name: "my-pod1",
|
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Namespace: "kube-system",
|
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node1",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.1.1",
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "my-pod2",
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Namespace: "default",
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org",
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hostnameAnnotationKey: "a.foo.example.org",
|
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},
|
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node2",
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},
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Status: corev1.PodStatus{
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PodIP: "100.0.1.2",
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},
|
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},
|
|
},
|
|
},
|
|
{
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|
"split record for internal hostname annotation",
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|
"",
|
|
"",
|
|
true,
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|
"",
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[]*endpoint.Endpoint{
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{DNSName: "internal.a.foo.example.org", Targets: endpoint.Targets{"10.0.1.1"}, RecordType: endpoint.RecordTypeA},
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{DNSName: "internal.b.foo.example.org", Targets: endpoint.Targets{"10.0.1.1"}, RecordType: endpoint.RecordTypeA},
|
|
},
|
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false,
|
|
[]*corev1.Node{
|
|
{
|
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ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-node1",
|
|
},
|
|
Status: corev1.NodeStatus{
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Addresses: []corev1.NodeAddress{
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{Type: corev1.NodeInternalIP, Address: "10.0.1.1"},
|
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},
|
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},
|
|
},
|
|
},
|
|
[]*corev1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
|
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Name: "my-pod1",
|
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Namespace: "kube-system",
|
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Annotations: map[string]string{
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internalHostnameAnnotationKey: "internal.a.foo.example.org,internal.b.foo.example.org",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
|
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NodeName: "my-node1",
|
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},
|
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Status: corev1.PodStatus{
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PodIP: "10.0.1.1",
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},
|
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},
|
|
},
|
|
},
|
|
{
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"create IPv4 records for non-host network pods",
|
|
"",
|
|
"",
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|
false,
|
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"example.org",
|
|
[]*endpoint.Endpoint{
|
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{DNSName: "my-pod1.example.org", Targets: endpoint.Targets{"192.168.1.1"}, RecordType: endpoint.RecordTypeA},
|
|
{DNSName: "my-pod2.example.org", Targets: endpoint.Targets{"192.168.1.2"}, RecordType: endpoint.RecordTypeA},
|
|
},
|
|
false,
|
|
nodesFixturesIPv4(),
|
|
[]*corev1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-pod1",
|
|
Namespace: "kube-system",
|
|
Annotations: map[string]string{},
|
|
},
|
|
Spec: corev1.PodSpec{
|
|
HostNetwork: false,
|
|
NodeName: "my-node1",
|
|
},
|
|
Status: corev1.PodStatus{
|
|
PodIP: "192.168.1.1",
|
|
},
|
|
},
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-pod2",
|
|
Namespace: "kube-system",
|
|
Annotations: map[string]string{},
|
|
},
|
|
Spec: corev1.PodSpec{
|
|
HostNetwork: false,
|
|
NodeName: "my-node2",
|
|
},
|
|
Status: corev1.PodStatus{
|
|
PodIP: "192.168.1.2",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
"create records based on pod's target annotation with pod source domain",
|
|
"",
|
|
"",
|
|
true,
|
|
"example.org",
|
|
[]*endpoint.Endpoint{
|
|
{DNSName: "my-pod1.example.org", Targets: endpoint.Targets{"208.1.2.1"}, RecordType: endpoint.RecordTypeA},
|
|
{DNSName: "my-pod2.example.org", Targets: endpoint.Targets{"208.1.2.2"}, RecordType: endpoint.RecordTypeA},
|
|
{DNSName: "a.foo.example.org", Targets: endpoint.Targets{"208.1.2.1", "208.1.2.2"}, RecordType: endpoint.RecordTypeA},
|
|
{DNSName: "internal.a.foo.example.org", Targets: endpoint.Targets{"208.1.2.1", "208.1.2.2"}, RecordType: endpoint.RecordTypeA},
|
|
},
|
|
false,
|
|
nodesFixturesIPv4(),
|
|
[]*corev1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-pod1",
|
|
Namespace: "kube-system",
|
|
Annotations: map[string]string{
|
|
internalHostnameAnnotationKey: "internal.a.foo.example.org",
|
|
hostnameAnnotationKey: "a.foo.example.org",
|
|
targetAnnotationKey: "208.1.2.1",
|
|
},
|
|
},
|
|
Spec: corev1.PodSpec{
|
|
HostNetwork: true,
|
|
NodeName: "my-node1",
|
|
},
|
|
Status: corev1.PodStatus{
|
|
PodIP: "10.0.1.1",
|
|
},
|
|
},
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-pod2",
|
|
Namespace: "kube-system",
|
|
Annotations: map[string]string{
|
|
internalHostnameAnnotationKey: "internal.a.foo.example.org",
|
|
hostnameAnnotationKey: "a.foo.example.org",
|
|
targetAnnotationKey: "208.1.2.2",
|
|
},
|
|
},
|
|
Spec: corev1.PodSpec{
|
|
HostNetwork: true,
|
|
NodeName: "my-node2",
|
|
},
|
|
Status: corev1.PodStatus{
|
|
PodIP: "10.0.1.2",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
} {
|
|
tc := tc
|
|
t.Run(tc.title, func(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
kubernetes := fake.NewClientset()
|
|
ctx := context.Background()
|
|
|
|
// Create the nodes
|
|
for _, node := range tc.nodes {
|
|
if _, err := kubernetes.CoreV1().Nodes().Create(ctx, node, metav1.CreateOptions{}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
for _, pod := range tc.pods {
|
|
pods := kubernetes.CoreV1().Pods(pod.Namespace)
|
|
|
|
if _, err := pods.Create(ctx, pod, metav1.CreateOptions{}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
client, err := NewPodSource(context.TODO(), kubernetes, tc.targetNamespace, tc.compatibility, tc.ignoreNonHostNetworkPods, tc.PodSourceDomain)
|
|
require.NoError(t, err)
|
|
|
|
endpoints, err := client.Endpoints(ctx)
|
|
if tc.expectError {
|
|
require.Error(t, err)
|
|
} else {
|
|
require.NoError(t, err)
|
|
}
|
|
// Validate returned endpoints against desired endpoints.
|
|
validateEndpoints(t, endpoints, tc.expected)
|
|
})
|
|
}
|
|
}
|
|
|
|
func nodesFixturesIPv6() []*corev1.Node {
|
|
return []*corev1.Node{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-node1",
|
|
},
|
|
Status: corev1.NodeStatus{
|
|
Addresses: []corev1.NodeAddress{
|
|
{Type: corev1.NodeInternalIP, Address: "2001:DB8::1"},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-node2",
|
|
},
|
|
Status: corev1.NodeStatus{
|
|
Addresses: []corev1.NodeAddress{
|
|
{Type: corev1.NodeInternalIP, Address: "2001:DB8::2"},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func nodesFixturesIPv4() []*corev1.Node {
|
|
return []*corev1.Node{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-node1",
|
|
},
|
|
Status: corev1.NodeStatus{
|
|
Addresses: []corev1.NodeAddress{
|
|
{Type: corev1.NodeExternalIP, Address: "54.10.11.1"},
|
|
{Type: corev1.NodeInternalIP, Address: "10.0.1.1"},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-node2",
|
|
},
|
|
Status: corev1.NodeStatus{
|
|
Addresses: []corev1.NodeAddress{
|
|
{Type: corev1.NodeExternalIP, Address: "54.10.11.2"},
|
|
{Type: corev1.NodeInternalIP, Address: "10.0.1.2"},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|