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kubectl.go
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kubectl.go
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/*
Copyright 2015 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.
*/
// OWNER = sig/cli
package kubectl
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"log"
"mime/multipart"
"net"
"net/http"
"net/http/httptest"
"os"
"os/exec"
"path"
"path/filepath"
"regexp"
"sort"
"strconv"
"strings"
"text/template"
"time"
"github.com/elazarl/goproxy"
"github.com/ghodss/yaml"
"k8s.io/api/core/v1"
rbacv1beta1 "k8s.io/api/rbac/v1beta1"
apierrs "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime/schema"
utilnet "k8s.io/apimachinery/pkg/util/net"
"k8s.io/apimachinery/pkg/util/uuid"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apiserver/pkg/authentication/serviceaccount"
genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/kubernetes/pkg/controller"
"k8s.io/kubernetes/pkg/kubectl/cmd/util"
"k8s.io/kubernetes/test/e2e/framework"
"k8s.io/kubernetes/test/e2e/generated"
"k8s.io/kubernetes/test/e2e/scheduling"
testutils "k8s.io/kubernetes/test/utils"
uexec "k8s.io/utils/exec"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
imageutils "k8s.io/kubernetes/test/utils/image"
)
const (
updateDemoSelector = "name=update-demo"
guestbookStartupTimeout = 10 * time.Minute
guestbookResponseTimeout = 3 * time.Minute
simplePodSelector = "name=nginx"
simplePodName = "nginx"
nginxDefaultOutput = "Welcome to nginx!"
simplePodPort = 80
pausePodSelector = "name=pause"
pausePodName = "pause"
runJobTimeout = 5 * time.Minute
kubeCtlManifestPath = "test/e2e/testing-manifests/kubectl"
redisControllerFilename = "redis-master-controller.json.in"
redisServiceFilename = "redis-master-service.json"
nginxDeployment1Filename = "nginx-deployment1.yaml.in"
nginxDeployment2Filename = "nginx-deployment2.yaml.in"
nginxDeployment3Filename = "nginx-deployment3.yaml.in"
)
var (
nautilusImage = imageutils.GetE2EImage(imageutils.Nautilus)
kittenImage = imageutils.GetE2EImage(imageutils.Kitten)
redisImage = imageutils.GetE2EImage(imageutils.Redis)
nginxImage = imageutils.GetE2EImage(imageutils.NginxSlim)
busyboxImage = "busybox"
)
var testImages = struct {
GBFrontendImage string
PauseImage string
NginxSlimImage string
NginxSlimNewImage string
RedisImage string
GBRedisSlaveImage string
NautilusImage string
KittenImage string
}{
imageutils.GetE2EImage(imageutils.GBFrontend),
imageutils.GetE2EImage(imageutils.Pause),
imageutils.GetE2EImage(imageutils.NginxSlim),
imageutils.GetE2EImage(imageutils.NginxSlimNew),
imageutils.GetE2EImage(imageutils.Redis),
imageutils.GetE2EImage(imageutils.GBRedisSlave),
imageutils.GetE2EImage(imageutils.Nautilus),
imageutils.GetE2EImage(imageutils.Kitten),
}
var (
proxyRegexp = regexp.MustCompile("Starting to serve on 127.0.0.1:([0-9]+)")
CronJobGroupVersionResourceAlpha = schema.GroupVersionResource{Group: "batch", Version: "v2alpha1", Resource: "cronjobs"}
CronJobGroupVersionResourceBeta = schema.GroupVersionResource{Group: "batch", Version: "v1beta1", Resource: "cronjobs"}
)
// Stops everything from filePath from namespace ns and checks if everything matching selectors from the given namespace is correctly stopped.
// Aware of the kubectl example files map.
func cleanupKubectlInputs(fileContents string, ns string, selectors ...string) {
By("using delete to clean up resources")
var nsArg string
if ns != "" {
nsArg = fmt.Sprintf("--namespace=%s", ns)
}
// support backward compatibility : file paths or raw json - since we are removing file path
// dependencies from this test.
framework.RunKubectlOrDieInput(fileContents, "delete", "--grace-period=0", "--force", "-f", "-", nsArg)
framework.AssertCleanup(ns, selectors...)
}
func substituteImageName(content string) string {
contentWithImageName := new(bytes.Buffer)
tmpl, err := template.New("imagemanifest").Parse(content)
if err != nil {
framework.Failf("Failed Parse the template:", err)
}
err = tmpl.Execute(contentWithImageName, testImages)
if err != nil {
framework.Failf("Failed executing template:", err)
}
return contentWithImageName.String()
}
func readTestFileOrDie(file string) []byte {
return generated.ReadOrDie(path.Join(kubeCtlManifestPath, file))
}
func runKubectlRetryOrDie(args ...string) string {
var err error
var output string
for i := 0; i < 5; i++ {
output, err = framework.RunKubectl(args...)
if err == nil || (!strings.Contains(err.Error(), genericregistry.OptimisticLockErrorMsg) && !strings.Contains(err.Error(), "Operation cannot be fulfilled")) {
break
}
time.Sleep(time.Second)
}
// Expect no errors to be present after retries are finished
// Copied from framework #ExecOrDie
framework.Logf("stdout: %q", output)
Expect(err).NotTo(HaveOccurred())
return output
}
// duplicated setup to avoid polluting "normal" clients with alpha features which confuses the generated clients
var _ = SIGDescribe("Kubectl alpha client", func() {
defer GinkgoRecover()
f := framework.NewDefaultFramework("kubectl")
var c clientset.Interface
var ns string
BeforeEach(func() {
c = f.ClientSet
ns = f.Namespace.Name
})
// Customized Wait / ForEach wrapper for this test. These demonstrate the
framework.KubeDescribe("Kubectl run CronJob", func() {
var nsFlag string
var cjName string
BeforeEach(func() {
nsFlag = fmt.Sprintf("--namespace=%v", ns)
cjName = "e2e-test-echo-cronjob-alpha"
})
AfterEach(func() {
framework.RunKubectlOrDie("delete", "cronjobs", cjName, nsFlag)
})
It("should create a CronJob", func() {
framework.SkipIfMissingResource(f.DynamicClient, CronJobGroupVersionResourceAlpha, f.Namespace.Name)
schedule := "*/5 * * * ?"
framework.RunKubectlOrDie("run", cjName, "--restart=OnFailure", "--generator=cronjob/v2alpha1",
"--schedule="+schedule, "--image="+busyboxImage, nsFlag)
By("verifying the CronJob " + cjName + " was created")
sj, err := c.BatchV1beta1().CronJobs(ns).Get(cjName, metav1.GetOptions{})
if err != nil {
framework.Failf("Failed getting CronJob %s: %v", cjName, err)
}
if sj.Spec.Schedule != schedule {
framework.Failf("Failed creating a CronJob with correct schedule %s", schedule)
}
containers := sj.Spec.JobTemplate.Spec.Template.Spec.Containers
if containers == nil || len(containers) != 1 || containers[0].Image != busyboxImage {
framework.Failf("Failed creating CronJob %s for 1 pod with expected image %s: %#v", cjName, busyboxImage, containers)
}
if sj.Spec.JobTemplate.Spec.Template.Spec.RestartPolicy != v1.RestartPolicyOnFailure {
framework.Failf("Failed creating a CronJob with correct restart policy for --restart=OnFailure")
}
})
})
})
var _ = SIGDescribe("Kubectl client", func() {
defer GinkgoRecover()
f := framework.NewDefaultFramework("kubectl")
// Reusable cluster state function. This won't be adversely affected by lazy initialization of framework.
clusterState := func() *framework.ClusterVerification {
return f.NewClusterVerification(
f.Namespace,
framework.PodStateVerification{
Selectors: map[string]string{"app": "redis"},
ValidPhases: []v1.PodPhase{v1.PodRunning /*v1.PodPending*/},
})
}
forEachPod := func(podFunc func(p v1.Pod)) {
clusterState().ForEach(podFunc)
}
var c clientset.Interface
var ns string
BeforeEach(func() {
c = f.ClientSet
ns = f.Namespace.Name
})
// Customized Wait / ForEach wrapper for this test. These demonstrate the
// idiomatic way to wrap the ClusterVerification structs for syntactic sugar in large
// test files.
// Print debug info if atLeast Pods are not found before the timeout
waitForOrFailWithDebug := func(atLeast int) {
pods, err := clusterState().WaitFor(atLeast, framework.PodStartTimeout)
if err != nil || len(pods) < atLeast {
// TODO: Generalize integrating debug info into these tests so we always get debug info when we need it
framework.DumpAllNamespaceInfo(f.ClientSet, ns)
framework.Failf("Verified %v of %v pods , error : %v", len(pods), atLeast, err)
}
}
framework.KubeDescribe("Update Demo", func() {
var nautilus, kitten string
BeforeEach(func() {
updateDemoRoot := "test/fixtures/doc-yaml/user-guide/update-demo"
nautilus = substituteImageName(string(generated.ReadOrDie(filepath.Join(updateDemoRoot, "nautilus-rc.yaml.in"))))
kitten = substituteImageName(string(generated.ReadOrDie(filepath.Join(updateDemoRoot, "kitten-rc.yaml.in"))))
})
/*
Release : v1.9
Testname: Kubectl, replication controller
Description: Create a Pod and a container with a given image. Configure replication controller to run 2 replicas. The number of running instances of the Pod MUST equal the number of replicas set on the replication controller which is 2.
*/
framework.ConformanceIt("should create and stop a replication controller ", func() {
defer cleanupKubectlInputs(nautilus, ns, updateDemoSelector)
By("creating a replication controller")
framework.RunKubectlOrDieInput(nautilus, "create", "-f", "-", fmt.Sprintf("--namespace=%v", ns))
framework.ValidateController(c, nautilusImage, 2, "update-demo", updateDemoSelector, getUDData("nautilus.jpg", ns), ns)
})
/*
Release : v1.9
Testname: Kubectl, scale replication controller
Description: Create a Pod and a container with a given image. Configure replication controller to run 2 replicas. The number of running instances of the Pod MUST equal the number of replicas set on the replication controller which is 2. Update the replicaset to 1. Number of running instances of the Pod MUST be 1. Update the replicaset to 2. Number of running instances of the Pod MUST be 2.
*/
framework.ConformanceIt("should scale a replication controller ", func() {
defer cleanupKubectlInputs(nautilus, ns, updateDemoSelector)
By("creating a replication controller")
framework.RunKubectlOrDieInput(nautilus, "create", "-f", "-", fmt.Sprintf("--namespace=%v", ns))
framework.ValidateController(c, nautilusImage, 2, "update-demo", updateDemoSelector, getUDData("nautilus.jpg", ns), ns)
By("scaling down the replication controller")
framework.RunKubectlOrDie("scale", "rc", "update-demo-nautilus", "--replicas=1", "--timeout=5m", fmt.Sprintf("--namespace=%v", ns))
framework.ValidateController(c, nautilusImage, 1, "update-demo", updateDemoSelector, getUDData("nautilus.jpg", ns), ns)
By("scaling up the replication controller")
framework.RunKubectlOrDie("scale", "rc", "update-demo-nautilus", "--replicas=2", "--timeout=5m", fmt.Sprintf("--namespace=%v", ns))
framework.ValidateController(c, nautilusImage, 2, "update-demo", updateDemoSelector, getUDData("nautilus.jpg", ns), ns)
})
/*
Release : v1.9
Testname: Kubectl, rolling update replication controller
Description: Create a Pod and a container with a given image. Configure replication controller to run 2 replicas. The number of running instances of the Pod MUST equal the number of replicas set on the replication controller which is 2. Run a rolling update to run a different version of the container. All running instances SHOULD now be running the newer version of the container as part of the rolling update.
*/
framework.ConformanceIt("should do a rolling update of a replication controller ", func() {
By("creating the initial replication controller")
framework.RunKubectlOrDieInput(string(nautilus[:]), "create", "-f", "-", fmt.Sprintf("--namespace=%v", ns))
framework.ValidateController(c, nautilusImage, 2, "update-demo", updateDemoSelector, getUDData("nautilus.jpg", ns), ns)
By("rolling-update to new replication controller")
framework.RunKubectlOrDieInput(string(kitten[:]), "rolling-update", "update-demo-nautilus", "--update-period=1s", "-f", "-", fmt.Sprintf("--namespace=%v", ns))
framework.ValidateController(c, kittenImage, 2, "update-demo", updateDemoSelector, getUDData("kitten.jpg", ns), ns)
// Everything will hopefully be cleaned up when the namespace is deleted.
})
})
framework.KubeDescribe("Guestbook application", func() {
forEachGBFile := func(run func(s string)) {
guestbookRoot := "test/e2e/testing-manifests/guestbook"
for _, gbAppFile := range []string{
"redis-slave-service.yaml",
"redis-master-service.yaml",
"frontend-service.yaml",
"frontend-deployment.yaml.in",
"redis-master-deployment.yaml.in",
"redis-slave-deployment.yaml.in",
} {
contents := substituteImageName(string(generated.ReadOrDie(filepath.Join(guestbookRoot, gbAppFile))))
run(contents)
}
}
/*
Release : v1.9
Testname: Kubectl, guestbook application
Description: Create Guestbook application that contains redis server, 2 instances of redis slave, frontend application, frontend service and redis master service and redis slave service. Using frontend service, the test will write an entry into the guestbook application which will store the entry into the backend redis database. Application flow MUST work as expected and the data written MUST be available to read.
*/
framework.ConformanceIt("should create and stop a working application ", func() {
defer forEachGBFile(func(contents string) {
cleanupKubectlInputs(contents, ns)
})
By("creating all guestbook components")
forEachGBFile(func(contents string) {
framework.Logf(contents)
framework.RunKubectlOrDieInput(contents, "create", "-f", "-", fmt.Sprintf("--namespace=%v", ns))
})
By("validating guestbook app")
validateGuestbookApp(c, ns)
})
})
framework.KubeDescribe("Simple pod", func() {
podYaml := substituteImageName(string(readTestFileOrDie("pod-with-readiness-probe.yaml.in")))
BeforeEach(func() {
By(fmt.Sprintf("creating the pod from %v", podYaml))
framework.RunKubectlOrDieInput(podYaml, "create", "-f", "-", fmt.Sprintf("--namespace=%v", ns))
Expect(framework.CheckPodsRunningReady(c, ns, []string{simplePodName}, framework.PodStartTimeout)).To(BeTrue())
})
AfterEach(func() {
cleanupKubectlInputs(podYaml, ns, simplePodSelector)
})
It("should support exec", func() {
By("executing a command in the container")
execOutput := framework.RunKubectlOrDie("exec", fmt.Sprintf("--namespace=%v", ns), simplePodName, "echo", "running", "in", "container")
if e, a := "running in container", strings.TrimSpace(execOutput); e != a {
framework.Failf("Unexpected kubectl exec output. Wanted %q, got %q", e, a)
}
By("executing a very long command in the container")
veryLongData := make([]rune, 20000)
for i := 0; i < len(veryLongData); i++ {
veryLongData[i] = 'a'
}
execOutput = framework.RunKubectlOrDie("exec", fmt.Sprintf("--namespace=%v", ns), simplePodName, "echo", string(veryLongData))
Expect(string(veryLongData)).To(Equal(strings.TrimSpace(execOutput)), "Unexpected kubectl exec output")
By("executing a command in the container with noninteractive stdin")
execOutput = framework.NewKubectlCommand("exec", fmt.Sprintf("--namespace=%v", ns), "-i", simplePodName, "cat").
WithStdinData("abcd1234").
ExecOrDie()
if e, a := "abcd1234", execOutput; e != a {
framework.Failf("Unexpected kubectl exec output. Wanted %q, got %q", e, a)
}
// pretend that we're a user in an interactive shell
r, closer, err := newBlockingReader("echo hi\nexit\n")
if err != nil {
framework.Failf("Error creating blocking reader: %v", err)
}
// NOTE this is solely for test cleanup!
defer closer.Close()
By("executing a command in the container with pseudo-interactive stdin")
execOutput = framework.NewKubectlCommand("exec", fmt.Sprintf("--namespace=%v", ns), "-i", simplePodName, "bash").
WithStdinReader(r).
ExecOrDie()
if e, a := "hi", strings.TrimSpace(execOutput); e != a {
framework.Failf("Unexpected kubectl exec output. Wanted %q, got %q", e, a)
}
})
It("should support exec through an HTTP proxy", func() {
// Fail if the variable isn't set
if framework.TestContext.Host == "" {
framework.Failf("--host variable must be set to the full URI to the api server on e2e run.")
}
By("Starting goproxy")
testSrv, proxyLogs := startLocalProxy()
defer testSrv.Close()
proxyAddr := testSrv.URL
for _, proxyVar := range []string{"https_proxy", "HTTPS_PROXY"} {
proxyLogs.Reset()
By("Running kubectl via an HTTP proxy using " + proxyVar)
output := framework.NewKubectlCommand(fmt.Sprintf("--namespace=%s", ns), "exec", "nginx", "echo", "running", "in", "container").
WithEnv(append(os.Environ(), fmt.Sprintf("%s=%s", proxyVar, proxyAddr))).
ExecOrDie()
// Verify we got the normal output captured by the exec server
expectedExecOutput := "running in container\n"
if output != expectedExecOutput {
framework.Failf("Unexpected kubectl exec output. Wanted %q, got %q", expectedExecOutput, output)
}
// Verify the proxy server logs saw the connection
expectedProxyLog := fmt.Sprintf("Accepting CONNECT to %s", strings.TrimRight(strings.TrimLeft(framework.TestContext.Host, "https://"), "/api"))
proxyLog := proxyLogs.String()
if !strings.Contains(proxyLog, expectedProxyLog) {
framework.Failf("Missing expected log result on proxy server for %s. Expected: %q, got %q", proxyVar, expectedProxyLog, proxyLog)
}
}
})
It("should support exec through kubectl proxy", func() {
// Fail if the variable isn't set
if framework.TestContext.Host == "" {
framework.Failf("--host variable must be set to the full URI to the api server on e2e run.")
}
By("Starting kubectl proxy")
port, proxyCmd, err := startProxyServer()
framework.ExpectNoError(err)
defer framework.TryKill(proxyCmd)
//proxyLogs.Reset()
host := fmt.Sprintf("--server=http://127.0.0.1:%d", port)
By("Running kubectl via kubectl proxy using " + host)
output := framework.NewKubectlCommand(
host, fmt.Sprintf("--namespace=%s", ns),
"exec", "nginx", "echo", "running", "in", "container",
).ExecOrDie()
// Verify we got the normal output captured by the exec server
expectedExecOutput := "running in container\n"
if output != expectedExecOutput {
framework.Failf("Unexpected kubectl exec output. Wanted %q, got %q", expectedExecOutput, output)
}
})
It("should return command exit codes", func() {
nsFlag := fmt.Sprintf("--namespace=%v", ns)
By("execing into a container with a successful command")
_, err := framework.NewKubectlCommand(nsFlag, "exec", "nginx", "--", "/bin/sh", "-c", "exit 0").Exec()
framework.ExpectNoError(err)
By("execing into a container with a failing command")
_, err = framework.NewKubectlCommand(nsFlag, "exec", "nginx", "--", "/bin/sh", "-c", "exit 42").Exec()
ee, ok := err.(uexec.ExitError)
Expect(ok).To(Equal(true))
Expect(ee.ExitStatus()).To(Equal(42))
By("running a successful command")
_, err = framework.NewKubectlCommand(nsFlag, "run", "-i", "--image="+busyboxImage, "--restart=Never", "success", "--", "/bin/sh", "-c", "exit 0").Exec()
framework.ExpectNoError(err)
By("running a failing command")
_, err = framework.NewKubectlCommand(nsFlag, "run", "-i", "--image="+busyboxImage, "--restart=Never", "failure-1", "--", "/bin/sh", "-c", "exit 42").Exec()
ee, ok = err.(uexec.ExitError)
Expect(ok).To(Equal(true))
Expect(ee.ExitStatus()).To(Equal(42))
By("running a failing command without --restart=Never")
_, err = framework.NewKubectlCommand(nsFlag, "run", "-i", "--image="+busyboxImage, "--restart=OnFailure", "failure-2", "--", "/bin/sh", "-c", "cat && exit 42").
WithStdinData("abcd1234").
Exec()
framework.ExpectNoError(err)
By("running a failing command without --restart=Never, but with --rm")
_, err = framework.NewKubectlCommand(nsFlag, "run", "-i", "--image="+busyboxImage, "--restart=OnFailure", "--rm", "failure-3", "--", "/bin/sh", "-c", "cat && exit 42").
WithStdinData("abcd1234").
Exec()
framework.ExpectNoError(err)
framework.WaitForPodToDisappear(f.ClientSet, ns, "failure-3", labels.Everything(), 2*time.Second, wait.ForeverTestTimeout)
By("running a failing command with --leave-stdin-open")
_, err = framework.NewKubectlCommand(nsFlag, "run", "-i", "--image="+busyboxImage, "--restart=Never", "failure-4", "--leave-stdin-open", "--", "/bin/sh", "-c", "exit 42").
WithStdinData("abcd1234").
Exec()
framework.ExpectNoError(err)
})
It("should support inline execution and attach", func() {
nsFlag := fmt.Sprintf("--namespace=%v", ns)
By("executing a command with run and attach with stdin")
runOutput := framework.NewKubectlCommand(nsFlag, "run", "run-test", "--image="+busyboxImage, "--restart=OnFailure", "--attach=true", "--stdin", "--", "sh", "-c", "cat && echo 'stdin closed'").
WithStdinData("abcd1234").
ExecOrDie()
Expect(runOutput).To(ContainSubstring("abcd1234"))
Expect(runOutput).To(ContainSubstring("stdin closed"))
Expect(c.BatchV1().Jobs(ns).Delete("run-test", nil)).To(BeNil())
By("executing a command with run and attach without stdin")
runOutput = framework.NewKubectlCommand(fmt.Sprintf("--namespace=%v", ns), "run", "run-test-2", "--image="+busyboxImage, "--restart=OnFailure", "--attach=true", "--leave-stdin-open=true", "--", "sh", "-c", "cat && echo 'stdin closed'").
WithStdinData("abcd1234").
ExecOrDie()
Expect(runOutput).ToNot(ContainSubstring("abcd1234"))
Expect(runOutput).To(ContainSubstring("stdin closed"))
Expect(c.BatchV1().Jobs(ns).Delete("run-test-2", nil)).To(BeNil())
By("executing a command with run and attach with stdin with open stdin should remain running")
runOutput = framework.NewKubectlCommand(nsFlag, "run", "run-test-3", "--image="+busyboxImage, "--restart=OnFailure", "--attach=true", "--leave-stdin-open=true", "--stdin", "--", "sh", "-c", "cat && echo 'stdin closed'").
WithStdinData("abcd1234\n").
ExecOrDie()
Expect(runOutput).ToNot(ContainSubstring("stdin closed"))
g := func(pods []*v1.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
runTestPod, _, err := util.GetFirstPod(f.InternalClientset.Core(), ns, "run=run-test-3", 1*time.Minute, g)
if err != nil {
os.Exit(1)
}
if !framework.CheckPodsRunningReady(c, ns, []string{runTestPod.Name}, time.Minute) {
framework.Failf("Pod %q of Job %q should still be running", runTestPod.Name, "run-test-3")
}
// NOTE: we cannot guarantee our output showed up in the container logs before stdin was closed, so we have
// to loop test.
err = wait.PollImmediate(time.Second, time.Minute, func() (bool, error) {
if !framework.CheckPodsRunningReady(c, ns, []string{runTestPod.Name}, 1*time.Second) {
framework.Failf("Pod %q of Job %q should still be running", runTestPod.Name, "run-test-3")
}
logOutput := framework.RunKubectlOrDie(nsFlag, "logs", runTestPod.Name)
Expect(logOutput).ToNot(ContainSubstring("stdin closed"))
return strings.Contains(logOutput, "abcd1234"), nil
})
if err != nil {
os.Exit(1)
}
Expect(err).To(BeNil())
Expect(c.BatchV1().Jobs(ns).Delete("run-test-3", nil)).To(BeNil())
})
It("should support port-forward", func() {
By("forwarding the container port to a local port")
cmd := runPortForward(ns, simplePodName, simplePodPort)
defer cmd.Stop()
By("curling local port output")
localAddr := fmt.Sprintf("http://localhost:%d", cmd.port)
body, err := curl(localAddr)
framework.Logf("got: %s", body)
if err != nil {
framework.Failf("Failed http.Get of forwarded port (%s): %v", localAddr, err)
}
if !strings.Contains(body, nginxDefaultOutput) {
framework.Failf("Container port output missing expected value. Wanted:'%s', got: %s", nginxDefaultOutput, body)
}
})
It("should handle in-cluster config", func() {
By("adding rbac permissions")
// grant the view permission widely to allow inspection of the `invalid` namespace and the default namespace
framework.BindClusterRole(f.ClientSet.RbacV1beta1(), "view", f.Namespace.Name,
rbacv1beta1.Subject{Kind: rbacv1beta1.ServiceAccountKind, Namespace: f.Namespace.Name, Name: "default"})
err := framework.WaitForAuthorizationUpdate(f.ClientSet.AuthorizationV1beta1(),
serviceaccount.MakeUsername(f.Namespace.Name, "default"),
f.Namespace.Name, "list", schema.GroupResource{Resource: "pods"}, true)
framework.ExpectNoError(err)
By("overriding icc with values provided by flags")
kubectlPath := framework.TestContext.KubectlPath
// we need the actual kubectl binary, not the script wrapper
kubectlPathNormalizer := exec.Command("which", kubectlPath)
if strings.HasSuffix(kubectlPath, "kubectl.sh") {
kubectlPathNormalizer = exec.Command(kubectlPath, "path")
}
kubectlPathNormalized, err := kubectlPathNormalizer.Output()
framework.ExpectNoError(err)
kubectlPath = strings.TrimSpace(string(kubectlPathNormalized))
inClusterHost := strings.TrimSpace(framework.RunHostCmdOrDie(ns, simplePodName, "printenv KUBERNETES_SERVICE_HOST"))
inClusterPort := strings.TrimSpace(framework.RunHostCmdOrDie(ns, simplePodName, "printenv KUBERNETES_SERVICE_PORT"))
framework.Logf("copying %s to the %s pod", kubectlPath, simplePodName)
framework.RunKubectlOrDie("cp", kubectlPath, ns+"/"+simplePodName+":/tmp/")
// Build a kubeconfig file that will make use of the injected ca and token,
// but point at the DNS host and the default namespace
tmpDir, err := ioutil.TempDir("", "icc-override")
overrideKubeconfigName := "icc-override.kubeconfig"
framework.ExpectNoError(err)
defer func() { os.Remove(tmpDir) }()
framework.ExpectNoError(ioutil.WriteFile(filepath.Join(tmpDir, overrideKubeconfigName), []byte(`
kind: Config
apiVersion: v1
clusters:
- cluster:
api-version: v1
server: https://kubernetes.default.svc:443
certificate-authority: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
name: kubeconfig-cluster
contexts:
- context:
cluster: kubeconfig-cluster
namespace: default
user: kubeconfig-user
name: kubeconfig-context
current-context: kubeconfig-context
users:
- name: kubeconfig-user
user:
tokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
`), os.FileMode(0755)))
framework.Logf("copying override kubeconfig to the %s pod", simplePodName)
framework.RunKubectlOrDie("cp", filepath.Join(tmpDir, overrideKubeconfigName), ns+"/"+simplePodName+":/tmp/")
framework.ExpectNoError(ioutil.WriteFile(filepath.Join(tmpDir, "invalid-configmap-with-namespace.yaml"), []byte(`
kind: ConfigMap
apiVersion: v1
metadata:
name: "configmap with namespace and invalid name"
namespace: configmap-namespace
`), os.FileMode(0755)))
framework.ExpectNoError(ioutil.WriteFile(filepath.Join(tmpDir, "invalid-configmap-without-namespace.yaml"), []byte(`
kind: ConfigMap
apiVersion: v1
metadata:
name: "configmap without namespace and invalid name"
`), os.FileMode(0755)))
framework.Logf("copying configmap manifests to the %s pod", simplePodName)
framework.RunKubectlOrDie("cp", filepath.Join(tmpDir, "invalid-configmap-with-namespace.yaml"), ns+"/"+simplePodName+":/tmp/")
framework.RunKubectlOrDie("cp", filepath.Join(tmpDir, "invalid-configmap-without-namespace.yaml"), ns+"/"+simplePodName+":/tmp/")
By("getting pods with in-cluster configs")
execOutput := framework.RunHostCmdOrDie(ns, simplePodName, "/tmp/kubectl get pods --v=7 2>&1")
Expect(execOutput).To(MatchRegexp("nginx +1/1 +Running"))
Expect(execOutput).To(ContainSubstring("Using in-cluster namespace"))
Expect(execOutput).To(ContainSubstring("Using in-cluster configuration"))
By("creating an object containing a namespace with in-cluster config")
_, err = framework.RunHostCmd(ns, simplePodName, "/tmp/kubectl create -f /tmp/invalid-configmap-with-namespace.yaml --v=7 2>&1")
Expect(err).To(ContainSubstring("Using in-cluster namespace"))
Expect(err).To(ContainSubstring("Using in-cluster configuration"))
Expect(err).To(ContainSubstring(fmt.Sprintf("POST https://%s:%s/api/v1/namespaces/configmap-namespace/configmaps", inClusterHost, inClusterPort)))
By("creating an object not containing a namespace with in-cluster config")
_, err = framework.RunHostCmd(ns, simplePodName, "/tmp/kubectl create -f /tmp/invalid-configmap-without-namespace.yaml --v=7 2>&1")
Expect(err).To(ContainSubstring("Using in-cluster namespace"))
Expect(err).To(ContainSubstring("Using in-cluster configuration"))
Expect(err).To(ContainSubstring(fmt.Sprintf("POST https://%s:%s/api/v1/namespaces/%s/configmaps", inClusterHost, inClusterPort, f.Namespace.Name)))
By("trying to use kubectl with invalid token")
_, err = framework.RunHostCmd(ns, simplePodName, "/tmp/kubectl get pods --token=invalid --v=7 2>&1")
framework.Logf("got err %v", err)
Expect(err).To(HaveOccurred())
Expect(err).To(ContainSubstring("Using in-cluster namespace"))
Expect(err).To(ContainSubstring("Using in-cluster configuration"))
Expect(err).To(ContainSubstring("Authorization: Bearer invalid"))
Expect(err).To(ContainSubstring("Response Status: 401 Unauthorized"))
By("trying to use kubectl with invalid server")
_, err = framework.RunHostCmd(ns, simplePodName, "/tmp/kubectl get pods --server=invalid --v=6 2>&1")
framework.Logf("got err %v", err)
Expect(err).To(HaveOccurred())
Expect(err).To(ContainSubstring("Unable to connect to the server"))
Expect(err).To(ContainSubstring("GET http://invalid/api"))
By("trying to use kubectl with invalid namespace")
execOutput = framework.RunHostCmdOrDie(ns, simplePodName, "/tmp/kubectl get pods --namespace=invalid --v=6 2>&1")
Expect(execOutput).To(ContainSubstring("No resources found"))
Expect(execOutput).ToNot(ContainSubstring("Using in-cluster namespace"))
Expect(execOutput).To(ContainSubstring("Using in-cluster configuration"))
Expect(execOutput).To(MatchRegexp(fmt.Sprintf("GET http[s]?://%s:%s/api/v1/namespaces/invalid/pods", inClusterHost, inClusterPort)))
By("trying to use kubectl with kubeconfig")
execOutput = framework.RunHostCmdOrDie(ns, simplePodName, "/tmp/kubectl get pods --kubeconfig=/tmp/"+overrideKubeconfigName+" --v=6 2>&1")
Expect(execOutput).ToNot(ContainSubstring("Using in-cluster namespace"))
Expect(execOutput).ToNot(ContainSubstring("Using in-cluster configuration"))
Expect(execOutput).To(ContainSubstring("GET https://kubernetes.default.svc:443/api/v1/namespaces/default/pods"))
})
})
framework.KubeDescribe("Kubectl api-versions", func() {
/*
Release : v1.9
Testname: Kubectl, check version v1
Description: Run kubectl to get api versions, output MUST contain returned versions with ‘v1’ listed.
*/
framework.ConformanceIt("should check if v1 is in available api versions ", func() {
By("validating api versions")
output := framework.RunKubectlOrDie("api-versions")
if !strings.Contains(output, "v1") {
framework.Failf("No v1 in kubectl api-versions")
}
})
})
framework.KubeDescribe("Kubectl apply", func() {
It("should apply a new configuration to an existing RC", func() {
controllerJson := substituteImageName(string(readTestFileOrDie(redisControllerFilename)))
nsFlag := fmt.Sprintf("--namespace=%v", ns)
By("creating Redis RC")
framework.RunKubectlOrDieInput(controllerJson, "create", "-f", "-", nsFlag)
By("applying a modified configuration")
stdin := modifyReplicationControllerConfiguration(controllerJson)
framework.NewKubectlCommand("apply", "-f", "-", nsFlag).
WithStdinReader(stdin).
ExecOrDie()
By("checking the result")
forEachReplicationController(c, ns, "app", "redis", validateReplicationControllerConfiguration)
})
It("should reuse port when apply to an existing SVC", func() {
serviceJson := readTestFileOrDie(redisServiceFilename)
nsFlag := fmt.Sprintf("--namespace=%v", ns)
By("creating Redis SVC")
framework.RunKubectlOrDieInput(string(serviceJson[:]), "create", "-f", "-", nsFlag)
By("getting the original port")
originalNodePort := framework.RunKubectlOrDie("get", "service", "redis-master", nsFlag, "-o", "jsonpath={.spec.ports[0].port}")
By("applying the same configuration")
framework.RunKubectlOrDieInput(string(serviceJson[:]), "apply", "-f", "-", nsFlag)
By("getting the port after applying configuration")
currentNodePort := framework.RunKubectlOrDie("get", "service", "redis-master", nsFlag, "-o", "jsonpath={.spec.ports[0].port}")
By("checking the result")
if originalNodePort != currentNodePort {
framework.Failf("port should keep the same")
}
})
It("apply set/view last-applied", func() {
deployment1Yaml := substituteImageName(string(readTestFileOrDie(nginxDeployment1Filename)))
deployment2Yaml := substituteImageName(string(readTestFileOrDie(nginxDeployment2Filename)))
deployment3Yaml := substituteImageName(string(readTestFileOrDie(nginxDeployment3Filename)))
nsFlag := fmt.Sprintf("--namespace=%v", ns)
By("deployment replicas number is 2")
framework.RunKubectlOrDieInput(deployment1Yaml, "apply", "-f", "-", nsFlag)
By("check the last-applied matches expectations annotations")
output := framework.RunKubectlOrDieInput(deployment1Yaml, "apply", "view-last-applied", "-f", "-", nsFlag, "-o", "json")
requiredString := "\"replicas\": 2"
if !strings.Contains(output, requiredString) {
framework.Failf("Missing %s in kubectl view-last-applied", requiredString)
}
By("apply file doesn't have replicas")
framework.RunKubectlOrDieInput(deployment2Yaml, "apply", "set-last-applied", "-f", "-", nsFlag)
By("check last-applied has been updated, annotations doesn't replicas")
output = framework.RunKubectlOrDieInput(deployment1Yaml, "apply", "view-last-applied", "-f", "-", nsFlag, "-o", "json")
requiredString = "\"replicas\": 2"
if strings.Contains(output, requiredString) {
framework.Failf("Missing %s in kubectl view-last-applied", requiredString)
}
By("scale set replicas to 3")
nginxDeploy := "nginx-deployment"
framework.RunKubectlOrDie("scale", "deployment", nginxDeploy, "--replicas=3", nsFlag)
By("apply file doesn't have replicas but image changed")
framework.RunKubectlOrDieInput(deployment3Yaml, "apply", "-f", "-", nsFlag)
By("verify replicas still is 3 and image has been updated")
output = framework.RunKubectlOrDieInput(deployment3Yaml, "get", "-f", "-", nsFlag, "-o", "json")
requiredItems := []string{"\"replicas\": 3", imageutils.GetE2EImage(imageutils.NginxSlim)}
for _, item := range requiredItems {
if !strings.Contains(output, item) {
framework.Failf("Missing %s in kubectl apply", item)
}
}
})
})
framework.KubeDescribe("Kubectl cluster-info", func() {
/*
Release : v1.9
Testname: Kubectl, cluster info
Description: Call kubectl to get cluster-info, output MUST contain cluster-info returned and Kubernetes Master SHOULD be running.
*/
framework.ConformanceIt("should check if Kubernetes master services is included in cluster-info ", func() {
By("validating cluster-info")
output := framework.RunKubectlOrDie("cluster-info")
// Can't check exact strings due to terminal control commands (colors)
requiredItems := []string{"Kubernetes master", "is running at"}
if framework.ProviderIs("gce", "gke") {
requiredItems = append(requiredItems, "Heapster")
}
for _, item := range requiredItems {
if !strings.Contains(output, item) {
framework.Failf("Missing %s in kubectl cluster-info", item)
}
}
})
})
framework.KubeDescribe("Kubectl describe", func() {
/*
Release : v1.9
Testname: Kubectl, describe pod or rc
Description: Deploy a redis controller and a redis service. Kubectl describe pods SHOULD return the name, namespace, labels, state and other information as expected. Kubectl describe on rc, service, node and namespace SHOULD also return proper information.
*/
framework.ConformanceIt("should check if kubectl describe prints relevant information for rc and pods ", func() {
kv, err := framework.KubectlVersion()
Expect(err).NotTo(HaveOccurred())
framework.SkipUnlessServerVersionGTE(kv, c.Discovery())
controllerJson := substituteImageName(string(readTestFileOrDie(redisControllerFilename)))
serviceJson := readTestFileOrDie(redisServiceFilename)
nsFlag := fmt.Sprintf("--namespace=%v", ns)
framework.RunKubectlOrDieInput(controllerJson, "create", "-f", "-", nsFlag)
framework.RunKubectlOrDieInput(string(serviceJson[:]), "create", "-f", "-", nsFlag)
By("Waiting for Redis master to start.")
waitForOrFailWithDebug(1)
// Pod
forEachPod(func(pod v1.Pod) {
output := framework.RunKubectlOrDie("describe", "pod", pod.Name, nsFlag)
requiredStrings := [][]string{
{"Name:", "redis-master-"},
{"Namespace:", ns},
{"Node:"},
{"Labels:", "app=redis"},
{"role=master"},
{"Annotations:"},
{"Status:", "Running"},
{"IP:"},
{"Controlled By:", "ReplicationController/redis-master"},
{"Image:", redisImage},
{"State:", "Running"},
{"QoS Class:", "BestEffort"},
}
checkOutput(output, requiredStrings)
})
// Rc
requiredStrings := [][]string{
{"Name:", "redis-master"},
{"Namespace:", ns},
{"Selector:", "app=redis,role=master"},
{"Labels:", "app=redis"},
{"role=master"},
{"Annotations:"},
{"Replicas:", "1 current", "1 desired"},
{"Pods Status:", "1 Running", "0 Waiting", "0 Succeeded", "0 Failed"},
{"Pod Template:"},
{"Image:", redisImage},
{"Events:"}}
checkKubectlOutputWithRetry(requiredStrings, "describe", "rc", "redis-master", nsFlag)
// Service
output := framework.RunKubectlOrDie("describe", "service", "redis-master", nsFlag)
requiredStrings = [][]string{
{"Name:", "redis-master"},
{"Namespace:", ns},
{"Labels:", "app=redis"},
{"role=master"},
{"Annotations:"},
{"Selector:", "app=redis", "role=master"},
{"Type:", "ClusterIP"},
{"IP:"},
{"Port:", "<unset>", "6379/TCP"},
{"Endpoints:"},
{"Session Affinity:", "None"}}
checkOutput(output, requiredStrings)
// Node
// It should be OK to list unschedulable Nodes here.
nodes, err := c.CoreV1().Nodes().List(metav1.ListOptions{})
Expect(err).NotTo(HaveOccurred())
node := nodes.Items[0]
output = framework.RunKubectlOrDie("describe", "node", node.Name)
requiredStrings = [][]string{
{"Name:", node.Name},
{"Labels:"},
{"Annotations:"},
{"CreationTimestamp:"},
{"Conditions:"},
{"Type", "Status", "LastHeartbeatTime", "LastTransitionTime", "Reason", "Message"},
{"Addresses:"},
{"Capacity:"},
{"Version:"},
{"Kernel Version:"},
{"OS Image:"},
{"Container Runtime Version:"},
{"Kubelet Version:"},
{"Kube-Proxy Version:"},
{"Pods:"}}
checkOutput(output, requiredStrings)
// Namespace
output = framework.RunKubectlOrDie("describe", "namespace", ns)
requiredStrings = [][]string{
{"Name:", ns},
{"Labels:"},
{"Annotations:"},
{"Status:", "Active"}}
checkOutput(output, requiredStrings)
// Quota and limitrange are skipped for now.
})
})
framework.KubeDescribe("Kubectl expose", func() {
/*
Release : v1.9
Testname: Kubectl, create service, replication controller
Description: Create a Pod running redis master listening to port 6379. Using kubectl expose the redis master replication controllers at port 1234. Validate that the replication controller is listening on port 1234 and the target port is set to 6379, port that redis master is listening. Using kubectl expose the redis master as a service at port 2345. The service MUST be listening on port 2345 and the target port is set to 6379, port that redis master is listening.
*/
framework.ConformanceIt("should create services for rc ", func() {
controllerJson := substituteImageName(string(readTestFileOrDie(redisControllerFilename)))
nsFlag := fmt.Sprintf("--namespace=%v", ns)
redisPort := 6379
By("creating Redis RC")
framework.Logf("namespace %v", ns)
framework.RunKubectlOrDieInput(controllerJson, "create", "-f", "-", nsFlag)
// It may take a while for the pods to get registered in some cases, wait to be sure.
By("Waiting for Redis master to start.")
waitForOrFailWithDebug(1)
forEachPod(func(pod v1.Pod) {
framework.Logf("wait on redis-master startup in %v ", ns)
framework.LookForStringInLog(ns, pod.Name, "redis-master", "The server is now ready to accept connections", framework.PodStartTimeout)
})
validateService := func(name string, servicePort int, timeout time.Duration) {
err := wait.Poll(framework.Poll, timeout, func() (bool, error) {
endpoints, err := c.CoreV1().Endpoints(ns).Get(name, metav1.GetOptions{})
if err != nil {
// log the real error
framework.Logf("Get endpoints failed (interval %v): %v", framework.Poll, err)
// if the error is API not found or could not find default credentials or TLS handshake timeout, try again
if apierrs.IsNotFound(err) ||
apierrs.IsUnauthorized(err) ||
apierrs.IsServerTimeout(err) {
err = nil
}
return false, err
}
uidToPort := framework.GetContainerPortsByPodUID(endpoints)
if len(uidToPort) == 0 {
framework.Logf("No endpoint found, retrying")
return false, nil
}
if len(uidToPort) > 1 {
framework.Failf("Too many endpoints found")
}
for _, port := range uidToPort {
if port[0] != redisPort {
framework.Failf("Wrong endpoint port: %d", port[0])
}
}
return true, nil
})
Expect(err).NotTo(HaveOccurred())
service, err := c.CoreV1().Services(ns).Get(name, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
if len(service.Spec.Ports) != 1 {
framework.Failf("1 port is expected")
}
port := service.Spec.Ports[0]
if port.Port != int32(servicePort) {
framework.Failf("Wrong service port: %d", port.Port)
}
if port.TargetPort.IntValue() != redisPort {
framework.Failf("Wrong target port: %d", port.TargetPort.IntValue())
}
}
By("exposing RC")
framework.RunKubectlOrDie("expose", "rc", "redis-master", "--name=rm2", "--port=1234", fmt.Sprintf("--target-port=%d", redisPort), nsFlag)
framework.WaitForService(c, ns, "rm2", true, framework.Poll, framework.ServiceStartTimeout)
validateService("rm2", 1234, framework.ServiceStartTimeout)