/
kubectl.go
2214 lines (1963 loc) · 90.8 KB
/
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"
"net"
"net/http"
"net/http/httptest"
"os"
"os/exec"
"path"
"path/filepath"
"regexp"
"sort"
"strconv"
"strings"
"time"
"github.com/elazarl/goproxy"
openapi_v2 "github.com/googleapis/gnostic/openapiv2"
"sigs.k8s.io/yaml"
v1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1"
apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
apierrors "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/kubectl/pkg/polymorphichelpers"
"k8s.io/kubernetes/pkg/controller"
commonutils "k8s.io/kubernetes/test/e2e/common"
"k8s.io/kubernetes/test/e2e/framework"
e2eauth "k8s.io/kubernetes/test/e2e/framework/auth"
e2eendpoints "k8s.io/kubernetes/test/e2e/framework/endpoints"
e2ekubectl "k8s.io/kubernetes/test/e2e/framework/kubectl"
e2enetwork "k8s.io/kubernetes/test/e2e/framework/network"
e2enode "k8s.io/kubernetes/test/e2e/framework/node"
e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
e2eservice "k8s.io/kubernetes/test/e2e/framework/service"
e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
e2etestfiles "k8s.io/kubernetes/test/e2e/framework/testfiles"
"k8s.io/kubernetes/test/e2e/scheduling"
testutils "k8s.io/kubernetes/test/utils"
"k8s.io/kubernetes/test/utils/crd"
imageutils "k8s.io/kubernetes/test/utils/image"
uexec "k8s.io/utils/exec"
"k8s.io/utils/pointer"
"github.com/onsi/ginkgo"
"github.com/onsi/gomega"
)
const (
updateDemoSelector = "name=update-demo"
guestbookStartupTimeout = 10 * time.Minute
guestbookResponseTimeout = 3 * time.Minute
simplePodSelector = "name=httpd"
simplePodName = "httpd"
simplePodResourceName = "pod/httpd"
httpdDefaultOutput = "It works!"
simplePodPort = 80
pausePodSelector = "name=pause"
pausePodName = "pause"
busyboxPodSelector = "app=busybox1"
busyboxPodName = "busybox1"
kubeCtlManifestPath = "test/e2e/testing-manifests/kubectl"
agnhostControllerFilename = "agnhost-primary-controller.json.in"
agnhostServiceFilename = "agnhost-primary-service.json"
httpdDeployment1Filename = "httpd-deployment1.yaml.in"
httpdDeployment2Filename = "httpd-deployment2.yaml.in"
httpdDeployment3Filename = "httpd-deployment3.yaml.in"
httpdRCFilename = "httpd-rc.yaml.in"
metaPattern = `"kind":"%s","apiVersion":"%s/%s","metadata":{"name":"%s"}`
)
var (
nautilusImage = imageutils.GetE2EImage(imageutils.Nautilus)
httpdImage = imageutils.GetE2EImage(imageutils.Httpd)
busyboxImage = imageutils.GetE2EImage(imageutils.BusyBox)
agnhostImage = imageutils.GetE2EImage(imageutils.Agnhost)
)
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"}
)
var schemaFoo = []byte(`description: Foo CRD for Testing
type: object
properties:
spec:
type: object
description: Specification of Foo
properties:
bars:
description: List of Bars and their specs.
type: array
items:
type: object
required:
- name
properties:
name:
description: Name of Bar.
type: string
age:
description: Age of Bar.
type: string
bazs:
description: List of Bazs.
items:
type: string
type: array
status:
description: Status of Foo
type: object
properties:
bars:
description: List of Bars and their statuses.
type: array
items:
type: object
properties:
name:
description: Name of Bar.
type: string
available:
description: Whether the Bar is installed.
type: boolean
quxType:
description: Indicates to external qux type.
pattern: in-tree|out-of-tree
type: string`)
// 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) {
ginkgo.By("using delete to clean up resources")
// support backward compatibility : file paths or raw json - since we are removing file path
// dependencies from this test.
framework.RunKubectlOrDieInput(ns, fileContents, "delete", "--grace-period=0", "--force", "-f", "-")
assertCleanup(ns, selectors...)
}
// assertCleanup asserts that cleanup of a namespace wrt selectors occurred.
func assertCleanup(ns string, selectors ...string) {
var e error
verifyCleanupFunc := func() (bool, error) {
e = nil
for _, selector := range selectors {
resources := framework.RunKubectlOrDie(ns, "get", "rc,svc", "-l", selector, "--no-headers")
if resources != "" {
e = fmt.Errorf("Resources left running after stop:\n%s", resources)
return false, nil
}
pods := framework.RunKubectlOrDie(ns, "get", "pods", "-l", selector, "-o", "go-template={{ range .items }}{{ if not .metadata.deletionTimestamp }}{{ .metadata.name }}{{ \"\\n\" }}{{ end }}{{ end }}")
if pods != "" {
e = fmt.Errorf("Pods left unterminated after stop:\n%s", pods)
return false, nil
}
}
return true, nil
}
err := wait.PollImmediate(500*time.Millisecond, 1*time.Minute, verifyCleanupFunc)
if err != nil {
framework.Failf(e.Error())
}
}
func readTestFileOrDie(file string) []byte {
data, err := e2etestfiles.Read(path.Join(kubeCtlManifestPath, file))
if err != nil {
framework.Fail(err.Error(), 1)
}
return data
}
func runKubectlRetryOrDie(ns string, args ...string) string {
var err error
var output string
for i := 0; i < 5; i++ {
output, err = framework.RunKubectl(ns, 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)
framework.ExpectNoError(err)
return output
}
var _ = SIGDescribe("Kubectl client", func() {
defer ginkgo.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": "agnhost"},
ValidPhases: []v1.PodPhase{v1.PodRunning /*v1.PodPending*/},
})
}
forEachPod := func(podFunc func(p v1.Pod)) {
clusterState().ForEach(podFunc)
}
var c clientset.Interface
var ns string
ginkgo.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 %d of %d pods , error: %v", len(pods), atLeast, err)
}
}
debugDiscovery := func() {
home := os.Getenv("HOME")
if len(home) == 0 {
framework.Logf("no $HOME envvar set")
return
}
cacheDir := filepath.Join(home, ".kube", "cache", "discovery")
err := filepath.Walk(cacheDir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
// only pay attention to $host_$port/v1/serverresources.json files
subpath := strings.TrimPrefix(path, cacheDir+string(filepath.Separator))
parts := filepath.SplitList(subpath)
if len(parts) != 3 || parts[1] != "v1" || parts[2] != "serverresources.json" {
return nil
}
framework.Logf("%s modified at %s (current time: %s)", path, info.ModTime(), time.Now())
data, readError := ioutil.ReadFile(path)
if readError != nil {
framework.Logf("%s error: %v", path, readError)
} else {
framework.Logf("%s content: %s", path, string(data))
}
return nil
})
framework.Logf("scanned %s for discovery docs: %v", home, err)
}
ginkgo.Describe("Update Demo", func() {
var nautilus string
ginkgo.BeforeEach(func() {
updateDemoRoot := "test/fixtures/doc-yaml/user-guide/update-demo"
data, err := e2etestfiles.Read(filepath.Join(updateDemoRoot, "nautilus-rc.yaml.in"))
if err != nil {
framework.Fail(err.Error())
}
nautilus = commonutils.SubstituteImageName(string(data))
})
/*
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)
ginkgo.By("creating a replication controller")
framework.RunKubectlOrDieInput(ns, nautilus, "create", "-f", "-")
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)
ginkgo.By("creating a replication controller")
framework.RunKubectlOrDieInput(ns, nautilus, "create", "-f", "-")
validateController(c, nautilusImage, 2, "update-demo", updateDemoSelector, getUDData("nautilus.jpg", ns), ns)
ginkgo.By("scaling down the replication controller")
debugDiscovery()
framework.RunKubectlOrDie(ns, "scale", "rc", "update-demo-nautilus", "--replicas=1", "--timeout=5m")
validateController(c, nautilusImage, 1, "update-demo", updateDemoSelector, getUDData("nautilus.jpg", ns), ns)
ginkgo.By("scaling up the replication controller")
debugDiscovery()
framework.RunKubectlOrDie(ns, "scale", "rc", "update-demo-nautilus", "--replicas=2", "--timeout=5m")
validateController(c, nautilusImage, 2, "update-demo", updateDemoSelector, getUDData("nautilus.jpg", ns), ns)
})
})
ginkgo.Describe("Guestbook application", func() {
forEachGBFile := func(run func(s string)) {
guestbookRoot := "test/e2e/testing-manifests/guestbook"
for _, gbAppFile := range []string{
"agnhost-replica-service.yaml",
"agnhost-primary-service.yaml",
"frontend-service.yaml",
"frontend-deployment.yaml.in",
"agnhost-primary-deployment.yaml.in",
"agnhost-replica-deployment.yaml.in",
} {
data, err := e2etestfiles.Read(filepath.Join(guestbookRoot, gbAppFile))
if err != nil {
framework.Fail(err.Error())
}
contents := commonutils.SubstituteImageName(string(data))
run(contents)
}
}
/*
Release: v1.9
Testname: Kubectl, guestbook application
Description: Create Guestbook application that contains an agnhost primary server, 2 agnhost replicas, frontend application, frontend service and agnhost primary service and agnhost replica service. Using frontend service, the test will write an entry into the guestbook application which will store the entry into the backend agnhost store. 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)
})
ginkgo.By("creating all guestbook components")
forEachGBFile(func(contents string) {
framework.Logf(contents)
framework.RunKubectlOrDieInput(ns, contents, "create", "-f", "-")
})
ginkgo.By("validating guestbook app")
validateGuestbookApp(c, ns)
})
})
ginkgo.Describe("Simple pod", func() {
var podYaml string
ginkgo.BeforeEach(func() {
ginkgo.By(fmt.Sprintf("creating the pod from %v", podYaml))
podYaml = commonutils.SubstituteImageName(string(readTestFileOrDie("pod-with-readiness-probe.yaml.in")))
framework.RunKubectlOrDieInput(ns, podYaml, "create", "-f", "-")
framework.ExpectEqual(e2epod.CheckPodsRunningReady(c, ns, []string{simplePodName}, framework.PodStartTimeout), true)
})
ginkgo.AfterEach(func() {
cleanupKubectlInputs(podYaml, ns, simplePodSelector)
})
ginkgo.It("should support exec", func() {
ginkgo.By("executing a command in the container")
execOutput := framework.RunKubectlOrDie(ns, "exec", 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)
}
ginkgo.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(ns, "exec", simplePodName, "echo", string(veryLongData))
framework.ExpectEqual(string(veryLongData), strings.TrimSpace(execOutput), "Unexpected kubectl exec output")
ginkgo.By("executing a command in the container with noninteractive stdin")
execOutput = framework.NewKubectlCommand(ns, "exec", "-i", simplePodName, "cat").
WithStdinData("abcd1234").
ExecOrDie(ns)
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()
ginkgo.By("executing a command in the container with pseudo-interactive stdin")
execOutput = framework.NewKubectlCommand(ns, "exec", "-i", simplePodName, "sh").
WithStdinReader(r).
ExecOrDie(ns)
if e, a := "hi", strings.TrimSpace(execOutput); e != a {
framework.Failf("Unexpected kubectl exec output. Wanted %q, got %q", e, a)
}
})
ginkgo.It("should support exec using resource/name", func() {
ginkgo.By("executing a command in the container")
execOutput := framework.RunKubectlOrDie(ns, "exec", simplePodResourceName, "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)
}
})
ginkgo.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.")
}
ginkgo.By("Starting goproxy")
testSrv, proxyLogs := startLocalProxy()
defer testSrv.Close()
proxyAddr := testSrv.URL
for _, proxyVar := range []string{"https_proxy", "HTTPS_PROXY"} {
proxyLogs.Reset()
ginkgo.By("Running kubectl via an HTTP proxy using " + proxyVar)
output := framework.NewKubectlCommand(ns, fmt.Sprintf("--namespace=%s", ns), "exec", "httpd", "echo", "running", "in", "container").
WithEnv(append(os.Environ(), fmt.Sprintf("%s=%s", proxyVar, proxyAddr))).
ExecOrDie(ns)
// 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.TrimSuffix(strings.TrimPrefix(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)
}
}
})
ginkgo.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.")
}
ginkgo.By("Starting kubectl proxy")
port, proxyCmd, err := startProxyServer(ns)
framework.ExpectNoError(err)
defer framework.TryKill(proxyCmd)
//proxyLogs.Reset()
host := fmt.Sprintf("--server=http://127.0.0.1:%d", port)
ginkgo.By("Running kubectl via kubectl proxy using " + host)
output := framework.NewKubectlCommand(
ns, host, fmt.Sprintf("--namespace=%s", ns),
"exec", "httpd", "echo", "running", "in", "container",
).ExecOrDie(ns)
// 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)
}
})
ginkgo.It("should return command exit codes", func() {
ginkgo.By("execing into a container with a successful command")
_, err := framework.NewKubectlCommand(ns, "exec", "httpd", "--", "/bin/sh", "-c", "exit 0").Exec()
framework.ExpectNoError(err)
ginkgo.By("execing into a container with a failing command")
_, err = framework.NewKubectlCommand(ns, "exec", "httpd", "--", "/bin/sh", "-c", "exit 42").Exec()
ee, ok := err.(uexec.ExitError)
framework.ExpectEqual(ok, true)
framework.ExpectEqual(ee.ExitStatus(), 42)
ginkgo.By("running a successful command")
_, err = framework.NewKubectlCommand(ns, "run", "-i", "--image="+busyboxImage, "--restart=Never", "success", "--", "/bin/sh", "-c", "exit 0").Exec()
framework.ExpectNoError(err)
ginkgo.By("running a failing command")
_, err = framework.NewKubectlCommand(ns, "run", "-i", "--image="+busyboxImage, "--restart=Never", "failure-1", "--", "/bin/sh", "-c", "exit 42").Exec()
ee, ok = err.(uexec.ExitError)
framework.ExpectEqual(ok, true)
framework.ExpectEqual(ee.ExitStatus(), 42)
ginkgo.By("running a failing command without --restart=Never")
_, err = framework.NewKubectlCommand(ns, "run", "-i", "--image="+busyboxImage, "--restart=OnFailure", "failure-2", "--", "/bin/sh", "-c", "cat && exit 42").
WithStdinData("abcd1234").
Exec()
ee, ok = err.(uexec.ExitError)
framework.ExpectEqual(ok, true)
if !strings.Contains(ee.String(), "timed out") {
framework.Failf("Missing expected 'timed out' error, got: %#v", ee)
}
ginkgo.By("running a failing command without --restart=Never, but with --rm")
_, err = framework.NewKubectlCommand(ns, "run", "-i", "--image="+busyboxImage, "--restart=OnFailure", "--rm", "failure-3", "--", "/bin/sh", "-c", "cat && exit 42").
WithStdinData("abcd1234").
Exec()
ee, ok = err.(uexec.ExitError)
framework.ExpectEqual(ok, true)
if !strings.Contains(ee.String(), "timed out") {
framework.Failf("Missing expected 'timed out' error, got: %#v", ee)
}
e2epod.WaitForPodToDisappear(f.ClientSet, ns, "failure-3", labels.Everything(), 2*time.Second, wait.ForeverTestTimeout)
ginkgo.By("running a failing command with --leave-stdin-open")
_, err = framework.NewKubectlCommand(ns, "run", "-i", "--image="+busyboxImage, "--restart=Never", "failure-4", "--leave-stdin-open", "--", "/bin/sh", "-c", "exit 42").
WithStdinData("abcd1234").
Exec()
framework.ExpectNoError(err)
})
ginkgo.It("should support inline execution and attach", func() {
waitForStdinContent := func(pod, content string) string {
var logOutput string
err := wait.Poll(10*time.Second, 5*time.Minute, func() (bool, error) {
logOutput = framework.RunKubectlOrDie(ns, "logs", pod)
return strings.Contains(logOutput, content), nil
})
gomega.Expect(err).To(gomega.BeNil(), fmt.Sprintf("unexpected error waiting for '%v' output", content))
return logOutput
}
ginkgo.By("executing a command with run and attach with stdin")
// We wait for a non-empty line so we know kubectl has attached
framework.NewKubectlCommand(ns, "run", "run-test", "--image="+busyboxImage, "--restart=OnFailure", "--attach=true", "--stdin", "--", "sh", "-c", "echo -n read: && cat && echo 'stdin closed'").
WithStdinData("value\nabcd1234").
ExecOrDie(ns)
runOutput := waitForStdinContent("run-test", "stdin closed")
gomega.Expect(runOutput).To(gomega.ContainSubstring("read:value"))
gomega.Expect(runOutput).To(gomega.ContainSubstring("abcd1234"))
gomega.Expect(runOutput).To(gomega.ContainSubstring("stdin closed"))
gomega.Expect(c.CoreV1().Pods(ns).Delete(context.TODO(), "run-test", metav1.DeleteOptions{})).To(gomega.BeNil())
ginkgo.By("executing a command with run and attach without stdin")
// There is a race on this scenario described in #73099
// It fails if we are not able to attach before the container prints
// "stdin closed", but hasn't exited yet.
// We wait 10 seconds before printing to give time to kubectl to attach
// to the container, this does not solve the race though.
framework.NewKubectlCommand(ns, "run", "run-test-2", "--image="+busyboxImage, "--restart=OnFailure", "--attach=true", "--leave-stdin-open=true", "--", "sh", "-c", "cat && echo 'stdin closed'").
WithStdinData("abcd1234").
ExecOrDie(ns)
runOutput = waitForStdinContent("run-test-2", "stdin closed")
gomega.Expect(runOutput).ToNot(gomega.ContainSubstring("abcd1234"))
gomega.Expect(runOutput).To(gomega.ContainSubstring("stdin closed"))
gomega.Expect(c.CoreV1().Pods(ns).Delete(context.TODO(), "run-test-2", metav1.DeleteOptions{})).To(gomega.BeNil())
ginkgo.By("executing a command with run and attach with stdin with open stdin should remain running")
framework.NewKubectlCommand(ns, "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(ns)
runOutput = waitForStdinContent("run-test-3", "abcd1234")
gomega.Expect(runOutput).To(gomega.ContainSubstring("abcd1234"))
gomega.Expect(runOutput).ToNot(gomega.ContainSubstring("stdin closed"))
g := func(pods []*v1.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
runTestPod, _, err := polymorphichelpers.GetFirstPod(f.ClientSet.CoreV1(), ns, "run=run-test-3", 1*time.Minute, g)
framework.ExpectNoError(err)
if !e2epod.CheckPodsRunningReady(c, ns, []string{runTestPod.Name}, time.Minute) {
framework.Failf("Pod %q of Job %q should still be running", runTestPod.Name, "run-test-3")
}
gomega.Expect(c.CoreV1().Pods(ns).Delete(context.TODO(), "run-test-3", metav1.DeleteOptions{})).To(gomega.BeNil())
})
ginkgo.It("should contain last line of the log", func() {
podName := "run-log-test"
ginkgo.By("executing a command with run")
framework.RunKubectlOrDie(ns, "run", podName, "--image="+busyboxImage, "--restart=OnFailure", "--", "sh", "-c", "sleep 10; seq 100 | while read i; do echo $i; sleep 0.01; done; echo EOF")
if !e2epod.CheckPodsRunningReadyOrSucceeded(c, ns, []string{podName}, framework.PodStartTimeout) {
framework.Failf("Pod for run-log-test was not ready")
}
logOutput := framework.RunKubectlOrDie(ns, "logs", "-f", "run-log-test")
gomega.Expect(logOutput).To(gomega.ContainSubstring("EOF"))
})
ginkgo.It("should support port-forward", func() {
ginkgo.By("forwarding the container port to a local port")
cmd := runPortForward(ns, simplePodName, simplePodPort)
defer cmd.Stop()
ginkgo.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, httpdDefaultOutput) {
framework.Failf("Container port output missing expected value. Wanted:'%s', got: %s", httpdDefaultOutput, body)
}
})
ginkgo.It("should handle in-cluster config", func() {
// TODO: Find a way to download and copy the appropriate kubectl binary, or maybe a multi-arch kubectl image
// for now this only works on amd64
e2eskipper.SkipUnlessNodeOSArchIs("amd64")
ginkgo.By("adding rbac permissions")
// grant the view permission widely to allow inspection of the `invalid` namespace and the default namespace
err := e2eauth.BindClusterRole(f.ClientSet.RbacV1(), "view", f.Namespace.Name,
rbacv1.Subject{Kind: rbacv1.ServiceAccountKind, Namespace: f.Namespace.Name, Name: "default"})
framework.ExpectNoError(err)
err = e2eauth.WaitForAuthorizationUpdate(f.ClientSet.AuthorizationV1(),
serviceaccount.MakeUsername(f.Namespace.Name, "default"),
f.Namespace.Name, "list", schema.GroupResource{Resource: "pods"}, true)
framework.ExpectNoError(err)
ginkgo.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"))
inClusterURL := net.JoinHostPort(inClusterHost, inClusterPort)
framework.Logf("copying %s to the %s pod", kubectlPath, simplePodName)
framework.RunKubectlOrDie(ns, "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(ns, "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(ns, "cp", filepath.Join(tmpDir, "invalid-configmap-with-namespace.yaml"), ns+"/"+simplePodName+":/tmp/")
framework.RunKubectlOrDie(ns, "cp", filepath.Join(tmpDir, "invalid-configmap-without-namespace.yaml"), ns+"/"+simplePodName+":/tmp/")
ginkgo.By("getting pods with in-cluster configs")
execOutput := framework.RunHostCmdOrDie(ns, simplePodName, "/tmp/kubectl get pods --v=6 2>&1")
gomega.Expect(execOutput).To(gomega.MatchRegexp("httpd +1/1 +Running"))
gomega.Expect(execOutput).To(gomega.ContainSubstring("Using in-cluster namespace"))
gomega.Expect(execOutput).To(gomega.ContainSubstring("Using in-cluster configuration"))
ginkgo.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=6 2>&1")
gomega.Expect(err).To(gomega.ContainSubstring("Using in-cluster namespace"))
gomega.Expect(err).To(gomega.ContainSubstring("Using in-cluster configuration"))
gomega.Expect(err).To(gomega.ContainSubstring(fmt.Sprintf("POST https://%s/api/v1/namespaces/configmap-namespace/configmaps", inClusterURL)))
ginkgo.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=6 2>&1")
gomega.Expect(err).To(gomega.ContainSubstring("Using in-cluster namespace"))
gomega.Expect(err).To(gomega.ContainSubstring("Using in-cluster configuration"))
gomega.Expect(err).To(gomega.ContainSubstring(fmt.Sprintf("POST https://%s/api/v1/namespaces/%s/configmaps", inClusterURL, f.Namespace.Name)))
ginkgo.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)
framework.ExpectError(err)
gomega.Expect(err).To(gomega.ContainSubstring("Using in-cluster namespace"))
gomega.Expect(err).To(gomega.ContainSubstring("Using in-cluster configuration"))
gomega.Expect(err).To(gomega.ContainSubstring("Response Status: 401 Unauthorized"))
ginkgo.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)
framework.ExpectError(err)
gomega.Expect(err).To(gomega.ContainSubstring("Unable to connect to the server"))
gomega.Expect(err).To(gomega.ContainSubstring("GET http://invalid/api"))
ginkgo.By("trying to use kubectl with invalid namespace")
execOutput = framework.RunHostCmdOrDie(ns, simplePodName, "/tmp/kubectl get pods --namespace=invalid --v=6 2>&1")
gomega.Expect(execOutput).To(gomega.ContainSubstring("No resources found"))
gomega.Expect(execOutput).ToNot(gomega.ContainSubstring("Using in-cluster namespace"))
gomega.Expect(execOutput).To(gomega.ContainSubstring("Using in-cluster configuration"))
gomega.Expect(execOutput).To(gomega.MatchRegexp(fmt.Sprintf("GET http[s]?://[\\[]?%s[\\]]?:%s/api/v1/namespaces/invalid/pods", inClusterHost, inClusterPort)))
ginkgo.By("trying to use kubectl with kubeconfig")
execOutput = framework.RunHostCmdOrDie(ns, simplePodName, "/tmp/kubectl get pods --kubeconfig=/tmp/"+overrideKubeconfigName+" --v=6 2>&1")
gomega.Expect(execOutput).ToNot(gomega.ContainSubstring("Using in-cluster namespace"))
gomega.Expect(execOutput).ToNot(gomega.ContainSubstring("Using in-cluster configuration"))
gomega.Expect(execOutput).To(gomega.ContainSubstring("GET https://kubernetes.default.svc:443/api/v1/namespaces/default/pods"))
})
})
ginkgo.Describe("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() {
ginkgo.By("validating api versions")
output := framework.RunKubectlOrDie(ns, "api-versions")
if !strings.Contains(output, "v1") {
framework.Failf("No v1 in kubectl api-versions")
}
})
})
ginkgo.Describe("Kubectl get componentstatuses", func() {
ginkgo.It("should get componentstatuses", func() {
ginkgo.By("getting list of componentstatuses")
output := framework.RunKubectlOrDie(ns, "get", "componentstatuses", "-o", "jsonpath={.items[*].metadata.name}")
components := strings.Split(output, " ")
ginkgo.By("getting details of componentstatuses")
for _, component := range components {
ginkgo.By("getting status of " + component)
framework.RunKubectlOrDie(ns, "get", "componentstatuses", component)
}
})
})
ginkgo.Describe("Kubectl apply", func() {
ginkgo.It("should apply a new configuration to an existing RC", func() {
controllerJSON := commonutils.SubstituteImageName(string(readTestFileOrDie(agnhostControllerFilename)))
ginkgo.By("creating Agnhost RC")
framework.RunKubectlOrDieInput(ns, controllerJSON, "create", "-f", "-")
ginkgo.By("applying a modified configuration")
stdin := modifyReplicationControllerConfiguration(controllerJSON)
framework.NewKubectlCommand(ns, "apply", "-f", "-").
WithStdinReader(stdin).
ExecOrDie(ns)
ginkgo.By("checking the result")
forEachReplicationController(c, ns, "app", "agnhost", validateReplicationControllerConfiguration)
})
ginkgo.It("should reuse port when apply to an existing SVC", func() {
serviceJSON := readTestFileOrDie(agnhostServiceFilename)
ginkgo.By("creating Agnhost SVC")
framework.RunKubectlOrDieInput(ns, string(serviceJSON[:]), "create", "-f", "-")
ginkgo.By("getting the original port")
originalNodePort := framework.RunKubectlOrDie(ns, "get", "service", "agnhost-primary", "-o", "jsonpath={.spec.ports[0].port}")
ginkgo.By("applying the same configuration")
framework.RunKubectlOrDieInput(ns, string(serviceJSON[:]), "apply", "-f", "-")
ginkgo.By("getting the port after applying configuration")
currentNodePort := framework.RunKubectlOrDie(ns, "get", "service", "agnhost-primary", "-o", "jsonpath={.spec.ports[0].port}")
ginkgo.By("checking the result")
if originalNodePort != currentNodePort {
framework.Failf("port should keep the same")
}
})
ginkgo.It("apply set/view last-applied", func() {
deployment1Yaml := commonutils.SubstituteImageName(string(readTestFileOrDie(httpdDeployment1Filename)))
deployment2Yaml := commonutils.SubstituteImageName(string(readTestFileOrDie(httpdDeployment2Filename)))
deployment3Yaml := commonutils.SubstituteImageName(string(readTestFileOrDie(httpdDeployment3Filename)))
ginkgo.By("deployment replicas number is 2")
framework.RunKubectlOrDieInput(ns, deployment1Yaml, "apply", "-f", "-")
ginkgo.By("check the last-applied matches expectations annotations")
output := framework.RunKubectlOrDieInput(ns, deployment1Yaml, "apply", "view-last-applied", "-f", "-", "-o", "json")
requiredString := "\"replicas\": 2"
if !strings.Contains(output, requiredString) {
framework.Failf("Missing %s in kubectl view-last-applied", requiredString)
}
ginkgo.By("apply file doesn't have replicas")
framework.RunKubectlOrDieInput(ns, deployment2Yaml, "apply", "set-last-applied", "-f", "-")
ginkgo.By("check last-applied has been updated, annotations doesn't have replicas")
output = framework.RunKubectlOrDieInput(ns, deployment1Yaml, "apply", "view-last-applied", "-f", "-", "-o", "json")
requiredString = "\"replicas\": 2"
if strings.Contains(output, requiredString) {
framework.Failf("Presenting %s in kubectl view-last-applied", requiredString)
}
ginkgo.By("scale set replicas to 3")
httpdDeploy := "httpd-deployment"
debugDiscovery()
framework.RunKubectlOrDie(ns, "scale", "deployment", httpdDeploy, "--replicas=3")
ginkgo.By("apply file doesn't have replicas but image changed")
framework.RunKubectlOrDieInput(ns, deployment3Yaml, "apply", "-f", "-")
ginkgo.By("verify replicas still is 3 and image has been updated")
output = framework.RunKubectlOrDieInput(ns, deployment3Yaml, "get", "-f", "-", "-o", "json")
requiredItems := []string{"\"replicas\": 3", imageutils.GetE2EImage(imageutils.Httpd)}
for _, item := range requiredItems {
if !strings.Contains(output, item) {
framework.Failf("Missing %s in kubectl apply", item)
}
}
})
})
ginkgo.Describe("Kubectl diff", func() {
/*
Release: v1.19
Testname: Kubectl, diff Deployment
Description: Create a Deployment with httpd image. Declare the same Deployment with a different image, busybox. Diff of live Deployment with declared Deployment MUST include the difference between live and declared image.
*/
framework.ConformanceIt("should check if kubectl diff finds a difference for Deployments", func() {
ginkgo.By("create deployment with httpd image")
deployment := commonutils.SubstituteImageName(string(readTestFileOrDie(httpdDeployment3Filename)))
framework.RunKubectlOrDieInput(ns, deployment, "create", "-f", "-")
ginkgo.By("verify diff finds difference between live and declared image")
deployment = strings.Replace(deployment, httpdImage, busyboxImage, 1)
if !strings.Contains(deployment, busyboxImage) {
framework.Failf("Failed replacing image from %s to %s in:\n%s\n", httpdImage, busyboxImage, deployment)
}
output, err := framework.RunKubectlInput(ns, deployment, "diff", "-f", "-")
if err, ok := err.(*exec.ExitError); ok && err.ExitCode() == 1 {
framework.Failf("Expected kubectl diff exit code of 1, but got %d: %v\n", err.ExitCode(), err)
}
requiredItems := []string{httpdImage, busyboxImage}
for _, item := range requiredItems {
if !strings.Contains(output, item) {
framework.Failf("Missing %s in kubectl diff output:\n%s\n%v\n", item, output, err)
}
}
framework.RunKubectlOrDieInput(ns, deployment, "delete", "-f", "-")
})
})
ginkgo.Describe("Kubectl server-side dry-run", func() {
/*
Release: v1.19
Testname: Kubectl, server-side dry-run Pod
Description: The command 'kubectl run' must create a pod with the specified image name. After, the command 'kubectl patch pod -p {...} --dry-run=server' should update the Pod with the new image name and server-side dry-run enabled. The image name must not change.
*/
framework.ConformanceIt("should check if kubectl can dry-run update Pods", func() {
ginkgo.By("running the image " + httpdImage)
podName := "e2e-test-httpd-pod"
framework.RunKubectlOrDie(ns, "run", podName, "--image="+httpdImage, "--labels=run="+podName)
ginkgo.By("replace the image in the pod with server-side dry-run")
specImage := fmt.Sprintf(`{"spec":{"containers":[{"name": "%s","image": "%s"}]}}`, podName, busyboxImage)
framework.RunKubectlOrDie(ns, "patch", "pod", podName, "-p", specImage, "--dry-run=server")
ginkgo.By("verifying the pod " + podName + " has the right image " + httpdImage)
pod, err := c.CoreV1().Pods(ns).Get(context.TODO(), podName, metav1.GetOptions{})
if err != nil {
framework.Failf("Failed getting pod %s: %v", podName, err)
}
containers := pod.Spec.Containers
if checkContainersImage(containers, httpdImage) {
framework.Failf("Failed creating pod with expected image %s", httpdImage)
}
framework.RunKubectlOrDie(ns, "delete", "pods", podName)
})
})
// definitionMatchesGVK returns true if the specified GVK is listed as an x-kubernetes-group-version-kind extension
definitionMatchesGVK := func(extensions []*openapi_v2.NamedAny, desiredGVK schema.GroupVersionKind) bool {
for _, extension := range extensions {
if extension.GetValue().GetYaml() == "" ||
extension.GetName() != "x-kubernetes-group-version-kind" {
continue
}
var values []map[string]string
err := yaml.Unmarshal([]byte(extension.GetValue().GetYaml()), &values)
if err != nil {
framework.Logf("%v\n%s", err, string(extension.GetValue().GetYaml()))
continue
}
for _, value := range values {
if value["group"] != desiredGVK.Group {
continue
}
if value["version"] != desiredGVK.Version {
continue
}
if value["kind"] != desiredGVK.Kind {
continue
}
return true
}
}
return false
}
// schemaForGVK returns a schema (if defined) for the specified GVK
schemaForGVK := func(desiredGVK schema.GroupVersionKind) *openapi_v2.Schema {
d, err := f.ClientSet.Discovery().OpenAPISchema()
if err != nil {
framework.Failf("%v", err)
}
if d == nil || d.Definitions == nil {
return nil
}
for _, p := range d.Definitions.AdditionalProperties {
if p == nil || p.Value == nil {
continue
}
if !definitionMatchesGVK(p.Value.VendorExtension, desiredGVK) {
continue
}
return p.Value
}
return nil
}
ginkgo.Describe("Kubectl client-side validation", func() {
ginkgo.It("should create/apply a CR with unknown fields for CRD with no validation schema", func() {
ginkgo.By("create CRD with no validation schema")
crd, err := crd.CreateTestCRD(f)
if err != nil {
framework.Failf("failed to create test CRD: %v", err)
}
defer crd.CleanUp()
ginkgo.By("sleep for 10s to wait for potential crd openapi publishing alpha feature")
time.Sleep(10 * time.Second)
meta := fmt.Sprintf(metaPattern, crd.Crd.Spec.Names.Kind, crd.Crd.Spec.Group, crd.Crd.Spec.Versions[0].Name, "test-cr")