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How to use GetPodLogs method of client Package

Best Testkube code snippet using client.GetPodLogs

downwardapi_volume.go

Source:downwardapi_volume.go

1/*2Copyright 2015 The Kubernetes Authors All rights reserved.3Licensed under the Apache License, Version 2.0 (the "License");4you may not use this file except in compliance with the License.5You may obtain a copy of the License at6    http://www.apache.org/licenses/LICENSE-2.07Unless required by applicable law or agreed to in writing, software8distributed under the License is distributed on an "AS IS" BASIS,9WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.10See the License for the specific language governing permissions and11limitations under the License.12*/13package e2e14import (15	"fmt"16	"strings"17	"time"18	"k8s.io/kubernetes/pkg/api"19	client "k8s.io/kubernetes/pkg/client/unversioned"20	"k8s.io/kubernetes/pkg/util"21	. "github.com/onsi/ginkgo"22	. "github.com/onsi/gomega"23)24// How long to wait for a log pod to be displayed25const podLogTimeout = 45 * time.Second26// utility function for gomega Eventually27func getPodLogs(c *client.Client, namespace, podName, containerName string) (string, error) {28	logs, err := c.Get().Resource("pods").Namespace(namespace).Name(podName).SubResource("log").Param("container", containerName).Do().Raw()29	if err != nil {30		return "", err31	}32	if err == nil && strings.Contains(string(logs), "Internal Error") {33		return "", fmt.Errorf("Internal Error")34	}35	return string(logs), err36}37var _ = Describe("Downward API volume", func() {38	f := NewFramework("downward-api")39	It("should provide podname only [Conformance]", func() {40		podName := "downwardapi-volume-" + string(util.NewUUID())41		pod := downwardAPIVolumePod(podName, map[string]string{}, map[string]string{}, "/etc/podname")42		testContainerOutput("downward API volume plugin", f.Client, pod, 0, []string{43			fmt.Sprintf("%s\n", podName),44		}, f.Namespace.Name)45	})46	It("should provide podname as non-root with fsgroup [Conformance] [Skipped]", func() {47		podName := "metadata-volume-" + string(util.NewUUID())48		uid := int64(1001)49		gid := int64(1234)50		pod := downwardAPIVolumePod(podName, map[string]string{}, map[string]string{}, "/etc/podname")51		pod.Spec.SecurityContext = &api.PodSecurityContext{52			RunAsUser: &uid,53			FSGroup:   &gid,54		}55		testContainerOutput("downward API volume plugin", f.Client, pod, 0, []string{56			fmt.Sprintf("%s\n", podName),57		}, f.Namespace.Name)58	})59	It("should update labels on modification [Conformance]", func() {60		labels := map[string]string{}61		labels["key1"] = "value1"62		labels["key2"] = "value2"63		podName := "labelsupdate" + string(util.NewUUID())64		pod := downwardAPIVolumePod(podName, labels, map[string]string{}, "/etc/labels")65		containerName := "client-container"66		defer func() {67			By("Deleting the pod")68			f.Client.Pods(f.Namespace.Name).Delete(pod.Name, api.NewDeleteOptions(0))69		}()70		By("Creating the pod")71		_, err := f.Client.Pods(f.Namespace.Name).Create(pod)72		Expect(err).NotTo(HaveOccurred())73		expectNoError(waitForPodRunningInNamespace(f.Client, pod.Name, f.Namespace.Name))74		pod, err = f.Client.Pods(f.Namespace.Name).Get(pod.Name)75		Expect(err).NotTo(HaveOccurred())76		Eventually(func() (string, error) {77			return getPodLogs(f.Client, f.Namespace.Name, pod.Name, containerName)78		},79			podLogTimeout, poll).Should(ContainSubstring("key1=\"value1\"\n"))80		//modify labels81		pod.Labels["key3"] = "value3"82		_, err = f.Client.Pods(f.Namespace.Name).Update(pod)83		Expect(err).NotTo(HaveOccurred())84		Eventually(func() (string, error) {85			return getPodLogs(f.Client, f.Namespace.Name, pod.Name, containerName)86		},87			podLogTimeout, poll).Should(ContainSubstring("key3=\"value3\"\n"))88	})89	It("should update annotations on modification [Conformance]", func() {90		annotations := map[string]string{}91		annotations["builder"] = "bar"92		podName := "annotationupdate" + string(util.NewUUID())93		pod := downwardAPIVolumePod(podName, map[string]string{}, annotations, "/etc/annotations")94		containerName := "client-container"95		defer func() {96			By("Deleting the pod")97			f.Client.Pods(f.Namespace.Name).Delete(pod.Name, api.NewDeleteOptions(0))98		}()99		By("Creating the pod")100		_, err := f.Client.Pods(f.Namespace.Name).Create(pod)101		Expect(err).NotTo(HaveOccurred())102		expectNoError(waitForPodRunningInNamespace(f.Client, pod.Name, f.Namespace.Name))103		pod, err = f.Client.Pods(f.Namespace.Name).Get(pod.Name)104		Expect(err).NotTo(HaveOccurred())105		Eventually(func() (string, error) {106			return getPodLogs(f.Client, f.Namespace.Name, pod.Name, containerName)107		},108			podLogTimeout, poll).Should(ContainSubstring("builder=\"bar\"\n"))109		//modify annotations110		pod.Annotations["builder"] = "foo"111		_, err = f.Client.Pods(f.Namespace.Name).Update(pod)112		Expect(err).NotTo(HaveOccurred())113		Eventually(func() (string, error) {114			return getPodLogs(f.Client, f.Namespace.Name, pod.Name, containerName)115		},116			podLogTimeout, poll).Should(ContainSubstring("builder=\"foo\"\n"))117	})118})119func downwardAPIVolumePod(name string, labels, annotations map[string]string, filePath string) *api.Pod {120	pod := &api.Pod{121		ObjectMeta: api.ObjectMeta{122			Name:        name,123			Labels:      labels,124			Annotations: annotations,125		},126		Spec: api.PodSpec{127			Containers: []api.Container{128				{129					Name:    "client-container",130					Image:   "gcr.io/google_containers/mounttest:0.6",131					Command: []string{"/mt", "--break_on_expected_content=false", "--retry_time=120", "--file_content_in_loop=" + filePath},132					VolumeMounts: []api.VolumeMount{133						{134							Name:      "podinfo",135							MountPath: "/etc",136							ReadOnly:  false,137						},138					},139				},140			},141			Volumes: []api.Volume{142				{143					Name: "podinfo",144					VolumeSource: api.VolumeSource{145						DownwardAPI: &api.DownwardAPIVolumeSource{146							Items: []api.DownwardAPIVolumeFile{147								{148									Path: "podname",149									FieldRef: api.ObjectFieldSelector{150										APIVersion: "v1",151										FieldPath:  "metadata.name",152									},153								},154							},155						},156					},157				},158			},159			RestartPolicy: api.RestartPolicyNever,160		},161	}162	if len(labels) > 0 {163		pod.Spec.Volumes[0].DownwardAPI.Items = append(pod.Spec.Volumes[0].DownwardAPI.Items, api.DownwardAPIVolumeFile{164			Path: "labels",165			FieldRef: api.ObjectFieldSelector{166				APIVersion: "v1",167				FieldPath:  "metadata.labels",168			},169		})170	}171	if len(annotations) > 0 {172		pod.Spec.Volumes[0].DownwardAPI.Items = append(pod.Spec.Volumes[0].DownwardAPI.Items, api.DownwardAPIVolumeFile{173			Path: "annotations",174			FieldRef: api.ObjectFieldSelector{175				APIVersion: "v1",176				FieldPath:  "metadata.annotations",177			},178		})179	}180	return pod181}182// TODO: add test-webserver example as pointed out in https://github.com/kubernetes/kubernetes/pull/5093#discussion-diff-37606771...

watch.go

Source:watch.go

1package pkg2import (3	"bytes"4	"fmt"5	"io"6	"strings"7	"time"8	"github.com/litmuschaos/litmus-e2e/pkg/environment"9	"github.com/litmuschaos/litmus-e2e/pkg/log"10	"github.com/litmuschaos/litmus-e2e/pkg/types"11	"github.com/pkg/errors"12	v1 "k8s.io/api/core/v1"13	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"14)15// ChaosPodLogs will print the experiment and helper pod logs16func ChaosPodLogs(testsDetails *types.TestDetails, clients environment.ClientSets) error {17	if err := printChaosPodLogs(testsDetails, clients); err != nil {18		return err19	}20	uid, err := GetUID(testsDetails.EngineName, testsDetails.ChaosNamespace, clients)21	if err != nil {22		return errors.Errorf("Failed to get uid from experiment label,err: %v", err)23	}24	if err = printHelperPodLogs(testsDetails.ExperimentName, testsDetails.ChaosNamespace, uid, clients); err != nil {25		return errors.Errorf("Failed to get the helper pod", err)26	}27	return nil28}29// printChaosPodLogs will wait for the chaosPod to get completed and then prints the logs of it.30func printChaosPodLogs(testsDetails *types.TestDetails, clients environment.ClientSets) error {31	chaosEngine, err := clients.LitmusClient.ChaosEngines(testsDetails.AppNS).Get(testsDetails.EngineName, metav1.GetOptions{})32	if err != nil {33		return errors.Errorf("Failed to get the chaosengine %v err: %v", testsDetails.EngineName, err)34	}35	if len(chaosEngine.Status.Experiments) == 0 {36		return errors.Errorf("Failed to get the chaos pod for the test")37	}38	for count := 0; count < 3000; count++ {39		chaosPod, err := clients.KubeClient.CoreV1().Pods(testsDetails.AppNS).Get(chaosEngine.Status.Experiments[0].ExpPod, metav1.GetOptions{})40		if err != nil {41			return errors.Errorf("Failed to get the chaos pod err: %v", err)42		}43		if chaosPod.Status.Phase != "Succeeded" {44			if chaosPod.Status.Phase != "Running" && chaosPod.Status.Phase != "Pending" {45				return errors.Errorf("chaos pod is in %v state", chaosPod.Status.Phase)46			}47			time.Sleep(10 * time.Second)48			log.Infof("[Status]: Currently, the Chaos Pod is in %v State, Please Wait for its completion", chaosPod.Status.Phase)49		} else {50			break51		}52	}53	//Getting the jobList after the job gets completed54	chaosPodName := (chaosEngine.Status.Experiments[0].ExpPod)55	log.Infof("[Info]: chaos pod name is: %v ", chaosPodName)56	if err = getPodLogs(chaosPodName, testsDetails.ChaosNamespace, clients); err != nil {57		return err58	}59	return nil60}61//printHelperPodLogs will print the helper pod logs when the experiment is not passed62func printHelperPodLogs(experimentName, namespace, UID string, clients environment.ClientSets) error {63	podList, err := clients.KubeClient.CoreV1().Pods(namespace).List(metav1.ListOptions{})64	if err != nil || len(podList.Items) == 0 {65		return errors.Errorf("Failed to get the pods in chaos ns, err:%v", err)66	}67	for _, pod := range podList.Items {68		if strings.Contains(pod.Name, experimentName+"-helper") && pod.Labels["chaosUID"] == UID {69			if err = getPodLogs(pod.Name, namespace, clients); err != nil {70				log.Errorf("Failed to get the logs of helper pod %v, err: %v", pod.Name, err)71			}72		}73	}74	return nil75}76//getPodLogs will print the logs of the given pod77func getPodLogs(podName, namespace string, clients environment.ClientSets) error {78	req := clients.KubeClient.CoreV1().Pods(namespace).GetLogs(podName, &v1.PodLogOptions{})79	readCloser, err := req.Stream()80	if err != nil {81		return errors.Errorf("Failed to print the logs of %v pod", podName, err)82	}83	buf := new(bytes.Buffer)84	_, err = io.Copy(buf, readCloser)85	if err != nil {86		return errors.Errorf("Failed to read the logs, err: %v", err)87	}88	fmt.Println("\n"+podName+" logs : \n\n", buf.String())89	return nil90}...

cluster_operations.go

Source:cluster_operations.go

1package test2import (3	"bytes"4	"context"5	"flag"6	"fmt"7	"io"8	"log"9	"path/filepath"10	batchv1 "k8s.io/api/batch/v1"11	apiv1 "k8s.io/api/core/v1"12	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"13	"k8s.io/client-go/kubernetes"14	"k8s.io/client-go/tools/clientcmd"15	"k8s.io/client-go/util/homedir"16)17func NewK8s(kubeConfigPath string) (*kubernetes.Clientset, error) {18	var clientSet *kubernetes.Clientset19	var kubeconfig *string20	if len(kubeConfigPath) > 0 {21		kubeconfig = &kubeConfigPath22	} else if home := homedir.HomeDir(); home != "" {23		kc := filepath.Join(home, ".kube", "config")24		kubeconfig = &kc25	} else {26		return nil, fmt.Errorf("kube config path not specified and could not be found in home directory")27	}28	flag.Parse()29	config, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)30	if err != nil {31		return nil, err32	}33	clientSet, err = kubernetes.NewForConfig(config)34	if err != nil {35		return nil, err36	}37	return clientSet, nil38}39func ExecuteJob(jobName string, imageName string, containerArgs []string, labels map[string]string, clientSet *kubernetes.Clientset) (int32, string, error) {40	ctx := generateDefaultContext(KubernetesTimeout)41	jobsClient := clientSet.BatchV1().Jobs("default")42	var ttl int32 = 043	job := &batchv1.Job{44		ObjectMeta: metav1.ObjectMeta{45			Name: jobName,46		},47		Spec: batchv1.JobSpec{48			TTLSecondsAfterFinished: &ttl,49			Template: apiv1.PodTemplateSpec{50				ObjectMeta: metav1.ObjectMeta{51					Name:   jobName,52					Labels: labels,53				},54				Spec: apiv1.PodSpec{55					RestartPolicy: apiv1.RestartPolicyNever,56					Containers: []apiv1.Container{57						{58							Name:  jobName,59							Image: imageName,60							Args:  containerArgs,61						},62					},63				},64			},65		},66	}67	podWatchList, err := clientSet.CoreV1().Pods("default").Watch(ctx, metav1.ListOptions{68		LabelSelector: fmt.Sprintf("job-name=%s", jobName),69	})70	if err != nil {71		return 0, "", fmt.Errorf("error creating pod watch: %w", err)72	}73	_, _ = jobsClient.Create(ctx, job, metav1.CreateOptions{})74	var lastPodLog string75	for event := range podWatchList.ResultChan() {76		p, ok := event.Object.(*apiv1.Pod)77		if !ok {78			log.Fatal("unexpected type")79		}80		if p.Status.Phase == apiv1.PodSucceeded {81			logs := getPodLogs(ctx, clientSet, *p)82			return p.Status.ContainerStatuses[0].State.Terminated.ExitCode, logs, nil83		} else if p.Status.Phase == apiv1.PodFailed {84			logs := getPodLogs(ctx, clientSet, *p)85			log.Printf("job pod failed - logs are: %s", logs)86		}87		lastPodLog = getPodLogs(ctx, clientSet, *p)88	}89	return -1, lastPodLog, fmt.Errorf("error waiting for pod to complete")90}91func getPodLogs(ctx context.Context, clientSet *kubernetes.Clientset, pod apiv1.Pod) string {92	podLogOpts := apiv1.PodLogOptions{}93	req := clientSet.CoreV1().Pods(pod.Namespace).GetLogs(pod.Name, &podLogOpts)94	podLogs, err := req.Stream(ctx)95	if err != nil {96		return "error in opening stream"97	}98	defer podLogs.Close()99	buf := new(bytes.Buffer)100	_, err = io.Copy(buf, podLogs)101	if err != nil {102		return "error in copy information from podLogs to buf"103	}104	str := buf.String()105	return str106}...

GetPodLogs

Using AI Code Generation

1import (2func main() {3    config, err = clientcmd.BuildConfigFromFlags("", "/home/username/.kube/config")4    if err != nil {5        panic(err.Error())6    }7    clientset, err := kubernetes.NewForConfig(config)8    if err != nil {9        panic(err.Error())10    }11    logs, err := clientset.CoreV1().Pods("default").GetLogs("my-pod", &v1.PodLogOptions{}).Stream()12    if err != nil {13        panic(err.Error())14    }15    defer logs.Close()16    buf := new(bytes.Buffer)17    _, err = io.Copy(buf, logs)18    if err != nil {19        panic(err.Error())20    }21    str := buf.String()22    fmt.Println(str)23}

GetPodLogs

Using AI Code Generation

1import (2func main() {3	config, err := clientcmd.BuildConfigFromFlags("", "/home/ashish/.kube/config")4	if err != nil {5		panic(err.Error())6	}7	clientset, err := kubernetes.NewForConfig(config)8	if err != nil {9		panic(err.Error())10	}11	clientset.ExtensionsV1beta1().Deployments("default").Get("testdeployment")12	deployment := &v1beta1.Deployment{13		ObjectMeta: v1.ObjectMeta{14		},15		Spec: v1beta1.DeploymentSpec{16			Replicas: int32Ptr(1),17			Template: v1.PodTemplateSpec{18				ObjectMeta: v1.ObjectMeta{19					Labels: map[string]string{"app": "nginx"},20				},21				Spec: v1.PodSpec{22					Containers: []v1.Container{23						{24						},25					},26				},27			},28		},29	}30	fmt.Println("Creating deployment...")31	result, err := clientset.ExtensionsV1beta1().Deployments("default").Create(deployment)32	if err != nil {33		panic(err)34	}35	fmt.Printf("Created deployment %q.\n", result.GetObjectMeta().GetName())36	fmt.Println("Listing pods...")37	pods, err := clientset.CoreV1().Pods("default").List(v1.ListOptions{})38	if err != nil {39		panic(err.Error())40	}41	fmt.Printf("There are %d pods in the cluster42", len(pods.Items))

GetPodLogs

Using AI Code Generation

1import (2func main() {3	config, err := clientcmd.BuildConfigFromFlags("", "/home/ashish/.kube/config")4	if err != nil {5		panic(err.Error())6	}7	clientset, err := kubernetes.NewForConfig(config)8	if err != nil {9		panic(err.Error())10	}11	podLogs, err := clientset.CoreV1().Pods("default").GetLogs("nginx-deployment-5d6c5b8f7b-2d2z7", &corev1.PodLogOptions{12	}).Stream()13	if err != nil {14		panic(err.Error())15	}16	defer podLogs.Close()17	buf := new(bytes.Buffer)18	_, err = io.Copy(buf, podLogs)19	if err != nil {20		panic(err.Error())21	}22	str := buf.String()23	fmt.Println(str)24}

GetPodLogs

Using AI Code Generation

1import (2func main() {3	if home := homeDir(); home != "" {4		kubeconfig = flag.String("kubeconfig", filepath.Join(home, ".kube", "config"), "(optional) absolute path to the kubeconfig file")5	} else {6		kubeconfig = flag.String("kubeconfig", "", "absolute path to the kubeconfig file")7	}8	flag.Parse()9	config, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)10	if err != nil {11		panic(err.Error())12	}13	clientset, err := kubernetes.NewForConfig(config)14	if err != nil {15		panic(err.Error())16	}17	pods, err := clientset.CoreV1().Pods("default").List(metav1.ListOptions{})18	if err != nil {19		panic(err.Error())20	}21	fmt.Printf("There are %d pods in the cluster22", len(pods.Items))23	for _, pod := range pods.Items {24		fmt.Printf("Pod Name: %s, Namespace: %s, Image: %s, Node: %s25	}26	podLogs, err := clientset.CoreV1().Pods("default").GetLogs(podName, &v1.PodLogOptions{}).Stream()27	if err != nil {28		panic(err.Error())29	}30	defer podLogs.Close()31	buf := new(bytes.Buffer)32	_, err = io.Copy(buf, podLogs)33	if err != nil {34		panic(err.Error())35	}36	str := buf.String()37	fmt.Println(str)38}39func homeDir() string {40	if h := os.Getenv("HOME"); h != "" {41	}42}

GetPodLogs

Using AI Code Generation

1import (2func main() {3	config, err := rest.InClusterConfig()4	if err != nil {5		panic(err.Error())6	}7	clientset, err := kubernetes.NewForConfig(config)8	if err != nil {9		panic(err.Error())10	}11	logs, err := clientset.CoreV1().Pods("default").GetLogs("nginx-pod", &kubernetes.PodLogOptions{}).DoRaw(context.Background())12	if err != nil {13		panic(err.Error())14	}15	fmt.Fprintf(os.Stdout, "%s", logs)16}

GetPodLogs

Using AI Code Generation

1import (2func main() {3	config, err := clientcmd.BuildConfigFromFlags("", "/home/ashish/.kube/config")4	if err != nil {5		panic(err.Error())6	}7	clientset, err := kubernetes.NewForConfig(config)8	if err != nil {9		panic(err.Error())10	}11	podLogs, err := clientset.CoreV1().Pods("default").GetLogs("myapp-pod", &corev1.PodLogOptions{}).Stream()12	if err != nil {13		panic(err.Error())14	}15	defer podLogs.Close()16	buf := new(bytes.Buffer)17	_, err = io.Copy(buf, podLogs)18	if err != nil {19		panic(err.Error())20	}21	str := buf.String()22	fmt.Println(str)23}

GetPodLogs

Using AI Code Generation

1import (2func main() {3	if home := homeDir(); home != "" {4		kubeconfig = flag.String("kubeconfig", filepath.Join(home, ".kube", "config"), "(optional) absolute path to the kubeconfig file")5	} else {6		kubeconfig = flag.String("kubeconfig", "", "absolute path to the kubeconfig file")7	}8	flag.Parse()9	config, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)10	if err != nil {11		panic(err.Error())12	}13	clientset, err := kubernetes.NewForConfig(config)14	if err != nil {15		panic(err.Error())16	}17	podLogOpts := v1.PodLogOptions{}18	req := clientset.CoreV1().Pods("default").GetLogs("nginx", &podLogOpts)19	podLogs, err := req.Stream()20	if err != nil {21		panic(err.Error())22	}23	defer podLogs.Close()24	buf := new(bytes.Buffer)25	_, err = io.Copy(buf, podLogs)26	if err != nil {27		panic(err.Error())28	}29	str := buf.String()30	fmt.Println(str)31}32func homeDir() string {33	if h := os.Getenv("HOME"); h != "" {34	}35}36import (37func main() {38	if home := homeDir(); home != "" {39		kubeconfig = flag.String("kubeconfig", filepath.Join(home, ".kube", "config"), "(optional) absolute path to the kubeconfig file")40	} else {41		kubeconfig = flag.String("kubeconfig", "", "absolute path to the kubeconfig file")42	}43	flag.Parse()

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