88 lines
2.8 KiB
Go
88 lines
2.8 KiB
Go
// +build integration
|
|
|
|
/*
|
|
Copyright 2016 The Kubernetes Authors All rights reserved.
|
|
|
|
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 integration
|
|
|
|
import (
|
|
"bytes"
|
|
"path/filepath"
|
|
"testing"
|
|
"time"
|
|
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/labels"
|
|
"k8s.io/client-go/kubernetes"
|
|
|
|
commonutil "k8s.io/minikube/pkg/util"
|
|
pkgutil "k8s.io/minikube/pkg/util"
|
|
"k8s.io/minikube/test/integration/util"
|
|
)
|
|
|
|
func testClusterDNS(t *testing.T) {
|
|
t.Parallel()
|
|
client, err := pkgutil.GetClient()
|
|
if err != nil {
|
|
t.Fatalf("Error getting kubernetes client %v", err)
|
|
}
|
|
waitForDNS(t, client)
|
|
|
|
kr := util.NewKubectlRunner(t)
|
|
busybox := busyBoxPod(t, client, kr)
|
|
defer kr.RunCommand([]string{"delete", "po", busybox})
|
|
|
|
// The query result is not as important as service reachability
|
|
out, err := kr.RunCommand([]string{"exec", busybox, "nslookup", "localhost"})
|
|
if err != nil {
|
|
t.Errorf("nslookup within busybox failed: %v", err)
|
|
}
|
|
clusterIP := []byte("10.96.0.1")
|
|
if !bytes.Contains(out, clusterIP) {
|
|
t.Errorf("nslookup did not mention %s:\n%s", clusterIP, out)
|
|
}
|
|
}
|
|
|
|
func waitForDNS(t *testing.T, c kubernetes.Interface) {
|
|
// Implementation note: both kube-dns and coredns have k8s-app=kube-dns labels.
|
|
sel := labels.SelectorFromSet(labels.Set(map[string]string{"k8s-app": "kube-dns"}))
|
|
if err := commonutil.WaitForPodsWithLabelRunning(c, "kube-system", sel); err != nil {
|
|
t.Fatalf("Waited too long for k8s-app=kube-dns pods")
|
|
}
|
|
if err := commonutil.WaitForDeploymentToStabilize(c, "kube-system", "kube-dns", time.Minute*2); err != nil {
|
|
t.Fatalf("kube-dns deployment failed to stabilize within 2 minutes")
|
|
}
|
|
}
|
|
|
|
func busyBoxPod(t *testing.T, c kubernetes.Interface, kr *util.KubectlRunner) string {
|
|
if _, err := kr.RunCommand([]string{"create", "-f", filepath.Join(*testdataDir, "busybox.yaml")}); err != nil {
|
|
t.Fatalf("creating busybox pod: %s", err)
|
|
}
|
|
// TODO(tstromberg): Refactor WaitForBusyboxRunning to return name of pod.
|
|
if err := util.WaitForBusyboxRunning(t, "default"); err != nil {
|
|
t.Fatalf("Waiting for busybox pod to be up: %v", err)
|
|
}
|
|
|
|
pods, err := c.CoreV1().Pods("default").List(metav1.ListOptions{LabelSelector: "integration-test=busybox"})
|
|
if err != nil {
|
|
t.Fatalf("list error: %v", err)
|
|
}
|
|
if len(pods.Items) == 0 {
|
|
t.Fatal("Expected a busybox pod to be running")
|
|
}
|
|
return pods.Items[0].Name
|
|
}
|