mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-10-31 02:31:00 +01:00
4fd5596601
* feat(source): pods added support for annotation filter and label selectors * feat(source/pods): support for annotation and label filter Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com> --------- Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
484 lines
12 KiB
Go
484 lines
12 KiB
Go
/*
|
|
Copyright 2025 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package source
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
v1 "k8s.io/api/core/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/client-go/kubernetes/fake"
|
|
"sigs.k8s.io/external-dns/endpoint"
|
|
)
|
|
|
|
func TestNewPodSourceWithFqdn(t *testing.T) {
|
|
for _, tt := range []struct {
|
|
title string
|
|
annotationFilter string
|
|
fqdnTemplate string
|
|
expectError bool
|
|
}{
|
|
{
|
|
title: "invalid template",
|
|
expectError: true,
|
|
fqdnTemplate: "{{.Name",
|
|
},
|
|
{
|
|
title: "valid empty template",
|
|
expectError: false,
|
|
},
|
|
{
|
|
title: "valid template",
|
|
expectError: false,
|
|
fqdnTemplate: "{{.Name}}-{{.Namespace}}.ext-dns.test.com",
|
|
},
|
|
} {
|
|
t.Run(tt.title, func(t *testing.T) {
|
|
_, err := NewPodSource(
|
|
t.Context(),
|
|
fake.NewClientset(),
|
|
"",
|
|
"",
|
|
false,
|
|
"",
|
|
tt.fqdnTemplate,
|
|
false,
|
|
"",
|
|
nil)
|
|
|
|
if tt.expectError {
|
|
assert.Error(t, err)
|
|
} else {
|
|
assert.NoError(t, err)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestPodSourceFqdnTemplatingExamples(t *testing.T) {
|
|
for _, tt := range []struct {
|
|
title string
|
|
pods []*v1.Pod
|
|
nodes []*v1.Node
|
|
fqdnTemplate string
|
|
expected []*endpoint.Endpoint
|
|
combineFQDN bool
|
|
sourceDomain string
|
|
}{
|
|
{
|
|
title: "templating expansion with multiple domains",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-pod-1",
|
|
Namespace: "default",
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.domainA.com,{{ .Name }}.domainB.com",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "my-pod-1.domainA.com", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
{DNSName: "my-pod-1.domainB.com", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
},
|
|
},
|
|
{
|
|
title: "templating expansion with multiple domains and fqdn combine and pod source domain",
|
|
combineFQDN: true,
|
|
sourceDomain: "example.org",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "my-pod-1",
|
|
Namespace: "default",
|
|
},
|
|
Spec: v1.PodSpec{
|
|
NodeName: "node-1.internal",
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
nodes: []*v1.Node{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "node-1.internal",
|
|
},
|
|
Status: v1.NodeStatus{
|
|
Addresses: []v1.NodeAddress{
|
|
{Type: v1.NodeExternalIP, Address: "10.1.192.139"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.domainA.com,{{ .Name }}.domainB.com",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "my-pod-1.domainA.com", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
{DNSName: "my-pod-1.domainB.com", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
{DNSName: "my-pod-1.example.org", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
},
|
|
},
|
|
{
|
|
title: "templating with domain per namespace",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-1",
|
|
Namespace: "default",
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-2",
|
|
Namespace: "kube-system",
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.102",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.102"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.{{ .Namespace }}.example.org",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "pod-1.default.example.org", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
{DNSName: "pod-2.kube-system.example.org", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.102"}},
|
|
},
|
|
},
|
|
{
|
|
title: "templating with pod and multiple ips for types A and AAAA",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-1",
|
|
Namespace: "default",
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
{IP: "2041:0000:140F::875B:131B"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.example.org",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "pod-1.example.org", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
{DNSName: "pod-1.example.org", RecordType: endpoint.RecordTypeAAAA, Targets: endpoint.Targets{"2041:0000:140F::875B:131B"}},
|
|
},
|
|
},
|
|
{
|
|
title: "templating with pod and target annotation that is currently not overriding target IPs",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-1",
|
|
Namespace: "default",
|
|
Annotations: map[string]string{
|
|
"external-dns.alpha.kubernetes.io/target": "203.2.45.22",
|
|
},
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.example.org",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "pod-1.example.org", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
},
|
|
},
|
|
{
|
|
title: "templating with pod and host annotation that is currently not overriding hostname",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-1",
|
|
Namespace: "default",
|
|
Annotations: map[string]string{
|
|
"external-dns.alpha.kubernetes.io/hostname": "ip-10-1-176-1.internal.domain.com",
|
|
},
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.example.org",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "pod-1.example.org", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
},
|
|
},
|
|
{
|
|
title: "templating with simple annotation expansion",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-1",
|
|
Namespace: "kube-system",
|
|
Annotations: map[string]string{
|
|
"workload": "cluster-resources",
|
|
},
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-2",
|
|
Namespace: "workloads",
|
|
Annotations: map[string]string{
|
|
"workload": "workloads",
|
|
},
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.102",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.102"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.{{ .Annotations.workload }}.domain.tld",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "pod-1.cluster-resources.domain.tld", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
{DNSName: "pod-2.workloads.domain.tld", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.102"}},
|
|
},
|
|
},
|
|
{
|
|
title: "templating with complex label expansion",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-1",
|
|
Namespace: "kube-system",
|
|
Labels: map[string]string{
|
|
"topology.kubernetes.io/region": "eu-west-1a",
|
|
},
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-2",
|
|
Namespace: "workloads",
|
|
Labels: map[string]string{
|
|
"topology.kubernetes.io/region": "eu-west-1b",
|
|
},
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.102",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.102"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.{{ index .ObjectMeta.Labels \"topology.kubernetes.io/region\" }}.domain.tld",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "pod-1.eu-west-1a.domain.tld", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
{DNSName: "pod-2.eu-west-1b.domain.tld", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.102"}},
|
|
},
|
|
},
|
|
{
|
|
title: "templating with shared all domain",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-1",
|
|
Namespace: "kube-system",
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
{IP: "100.67.94.102"},
|
|
{IP: "100.67.94.103"},
|
|
{IP: "2041:0000:140F::875B:131B"},
|
|
{IP: "::11.22.33.44"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "pods-all.domain.tld",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "pods-all.domain.tld", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101", "100.67.94.102", "100.67.94.103"}},
|
|
{DNSName: "pods-all.domain.tld", RecordType: endpoint.RecordTypeAAAA, Targets: endpoint.Targets{"2041:0000:140F::875B:131B", "::11.22.33.44"}},
|
|
},
|
|
},
|
|
{
|
|
title: "templating with fqdn template and IP not set as pod failed",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-1",
|
|
Namespace: "kube-system",
|
|
},
|
|
Status: v1.PodStatus{
|
|
Phase: v1.PodRunning,
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-2",
|
|
Namespace: "kube-system",
|
|
},
|
|
Status: v1.PodStatus{
|
|
Phase: v1.PodFailed,
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.domain.tld",
|
|
expected: []*endpoint.Endpoint{
|
|
{DNSName: "pod-1.domain.tld", RecordType: endpoint.RecordTypeA, Targets: endpoint.Targets{"100.67.94.101"}},
|
|
},
|
|
},
|
|
} {
|
|
t.Run(tt.title, func(t *testing.T) {
|
|
kubeClient := fake.NewClientset()
|
|
|
|
for _, node := range tt.nodes {
|
|
_, err := kubeClient.CoreV1().Nodes().Create(t.Context(), node, metav1.CreateOptions{})
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
for _, pod := range tt.pods {
|
|
_, err := kubeClient.CoreV1().Pods(pod.Namespace).Create(t.Context(), pod, metav1.CreateOptions{})
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
src, err := NewPodSource(
|
|
t.Context(),
|
|
kubeClient,
|
|
"",
|
|
"",
|
|
false,
|
|
tt.sourceDomain,
|
|
tt.fqdnTemplate,
|
|
tt.combineFQDN,
|
|
"",
|
|
nil)
|
|
require.NoError(t, err)
|
|
|
|
endpoints, err := src.Endpoints(t.Context())
|
|
require.NoError(t, err)
|
|
|
|
validateEndpoints(t, endpoints, tt.expected)
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestPodSourceFqdnTemplatingExamples_Failed(t *testing.T) {
|
|
for _, tt := range []struct {
|
|
title string
|
|
pods []*v1.Pod
|
|
nodes []*v1.Node
|
|
fqdnTemplate string
|
|
expected []*endpoint.Endpoint
|
|
combineFQDN bool
|
|
sourceDomain string
|
|
}{
|
|
{
|
|
title: "templating with fqdn template correct but value does not exist",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod-1",
|
|
Namespace: "kube-system",
|
|
},
|
|
Status: v1.PodStatus{
|
|
PodIP: "100.67.94.101",
|
|
PodIPs: []v1.PodIP{
|
|
{IP: "100.67.94.101"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
fqdnTemplate: "{{ .Name }}.{{ .ThisNotExist }}.domain.tld",
|
|
expected: []*endpoint.Endpoint{},
|
|
},
|
|
} {
|
|
t.Run(tt.title, func(t *testing.T) {
|
|
kubeClient := fake.NewClientset()
|
|
|
|
for _, node := range tt.nodes {
|
|
_, err := kubeClient.CoreV1().Nodes().Create(t.Context(), node, metav1.CreateOptions{})
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
for _, pod := range tt.pods {
|
|
_, err := kubeClient.CoreV1().Pods(pod.Namespace).Create(t.Context(), pod, metav1.CreateOptions{})
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
src, err := NewPodSource(
|
|
t.Context(),
|
|
kubeClient,
|
|
"",
|
|
"",
|
|
false,
|
|
tt.sourceDomain,
|
|
tt.fqdnTemplate,
|
|
tt.combineFQDN,
|
|
"",
|
|
nil)
|
|
require.NoError(t, err)
|
|
|
|
_, err = src.Endpoints(t.Context())
|
|
require.Error(t, err)
|
|
})
|
|
}
|
|
}
|