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dump.go
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/
dump.go
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// Copyright 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package framework
import (
"bufio"
"bytes"
"context"
"fmt"
"sort"
"github.com/go-logr/logr"
"github.com/hashicorp/go-multierror"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/runtime"
metricsv1beta1 "k8s.io/metrics/pkg/apis/metrics/v1beta1"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/gardener/gardener/pkg/api/extensions"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/client/kubernetes"
"github.com/gardener/gardener/pkg/utils/kubernetes/health"
)
// DumpDefaultResourcesInAllNamespaces dumps all default k8s resources of a namespace
func (f *CommonFramework) DumpDefaultResourcesInAllNamespaces(ctx context.Context, k8sClient kubernetes.Interface) error {
namespaces := &corev1.NamespaceList{}
if err := k8sClient.Client().List(ctx, namespaces); err != nil {
return err
}
var result error
for _, ns := range namespaces.Items {
if err := f.DumpDefaultResourcesInNamespace(ctx, k8sClient, ns.Name); err != nil {
result = multierror.Append(result, err)
}
}
return result
}
// DumpDefaultResourcesInNamespace dumps all default K8s resources of a namespace.
func (f *CommonFramework) DumpDefaultResourcesInNamespace(ctx context.Context, k8sClient kubernetes.Interface, namespace string) error {
log := f.Logger.WithValues("namespace", namespace)
var result error
if err := f.dumpEventsInNamespace(ctx, log, k8sClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to fetch Events from namespace %s: %s", namespace, err.Error()))
}
if err := f.dumpPodInfoForNamespace(ctx, log, k8sClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to fetch information of Pods from namespace %s: %s", namespace, err.Error()))
}
if err := f.dumpDeploymentInfoForNamespace(ctx, log, k8sClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to fetch information of Deployments from namespace %s: %s", namespace, err.Error()))
}
if err := f.dumpStatefulSetInfoForNamespace(ctx, log, k8sClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to fetch information of StatefulSets from namespace %s: %s", namespace, err.Error()))
}
if err := f.dumpDaemonSetInfoForNamespace(ctx, log, k8sClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to fetch information of DaemonSets from namespace %s: %s", namespace, err.Error()))
}
if err := f.dumpServiceInfoForNamespace(ctx, log, k8sClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to fetch information of Services from namespace %s: %s", namespace, err.Error()))
}
if err := f.dumpVolumeInfoForNamespace(ctx, log, k8sClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to fetch information of Volumes from namespace %s: %s", namespace, err.Error()))
}
return result
}
func (f *GardenerFramework) dumpControlplaneInSeed(ctx context.Context, seed *gardencorev1beta1.Seed, namespace string) error {
log := f.Logger.WithValues("seedName", seed.GetName(), "namespace", namespace)
log.Info("Dumping control plane resources")
_, seedClient, err := f.GetSeed(ctx, seed.GetName())
if err != nil {
return err
}
var result error
if err := f.dumpGardenerExtensionsInNamespace(ctx, log, seedClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to dump Extensions from namespace %s in seed %s: %w", namespace, seed.Name, err))
}
if err := f.dumpEventsInNamespace(ctx, log, seedClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to dump Events from namespace %s in seed %s: %w", namespace, seed.Name, err))
}
if err := f.dumpPodInfoForNamespace(ctx, log, seedClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to dump information of Pods from namespace %s in seed %s: %w", namespace, seed.Name, err))
}
if err := f.dumpDeploymentInfoForNamespace(ctx, log, seedClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to dump information of Deployments from namespace %s in seed %s: %w", namespace, seed.Name, err))
}
if err := f.dumpStatefulSetInfoForNamespace(ctx, log, seedClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to dump information of StatefulSets from namespace %s in seed %s: %w", namespace, seed.Name, err))
}
if err := f.dumpDaemonSetInfoForNamespace(ctx, log, seedClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to dump information of DaemonSets from namespace %s in seed %s: %w", namespace, seed.Name, err))
}
if err := f.dumpServiceInfoForNamespace(ctx, log, seedClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to dump information of Services from namespace %s in seed %s: %w", namespace, seed.Name, err))
}
if err := f.dumpVolumeInfoForNamespace(ctx, log, seedClient, namespace); err != nil {
result = multierror.Append(result, fmt.Errorf("unable to fetch information of Volumes from namespace %s: %w", namespace, err))
}
return result
}
// dumpGardenerExtensionsInNamespace prints all gardener extension crds in the shoot namespace
func (f *GardenerFramework) dumpGardenerExtensionsInNamespace(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface, namespace string) error {
var result *multierror.Error
for kind, objList := range map[string]client.ObjectList{
"Infrastructure": &extensionsv1alpha1.InfrastructureList{},
"ControlPlane": &extensionsv1alpha1.ControlPlaneList{},
"OperatingSystemConfig": &extensionsv1alpha1.OperatingSystemConfigList{},
"Worker": &extensionsv1alpha1.WorkerList{},
"BackupBucket": &extensionsv1alpha1.BackupBucketList{},
"BackupEntry": &extensionsv1alpha1.BackupEntryList{},
"Bastion": &extensionsv1alpha1.BastionList{},
"Network": &extensionsv1alpha1.NetworkList{},
} {
extensionLog := log.WithValues("kind", kind)
extensionLog.Info("Dumping extensions.gardener.cloud/v1alpha1 resources")
if err := k8sClient.Client().List(ctx, objList, client.InNamespace(namespace)); err != nil {
result = multierror.Append(result, err)
if err := meta.EachListItem(objList, func(o runtime.Object) error {
obj, err := extensions.Accessor(o)
if err != nil {
return err
}
f.dumpGardenerExtension(extensionLog, obj)
return nil
}); err != nil {
result = multierror.Append(result, err)
}
}
}
return result.ErrorOrNil()
}
// dumpGardenerExtensions prints all gardener extension crds in the shoot namespace
func (f *GardenerFramework) dumpGardenerExtension(log logr.Logger, extension extensionsv1alpha1.Object) {
log = log.WithValues("name", extension.GetName(), "type", extension.GetExtensionSpec().GetExtensionType())
if err := health.CheckExtensionObject(extension); err != nil {
log.Info("Found unhealthy extension object", "reason", err.Error())
} else {
log.Info("Found healthy extension object")
}
log.Info("Extension object has last operation", "lastOperation", extension.GetExtensionStatus().GetLastOperation())
if extension.GetExtensionStatus().GetLastError() != nil {
log.Info("Extension object has last error", "lastError", extension.GetExtensionStatus().GetLastError())
}
}
// DumpLogsForPodsWithLabelsInNamespace prints the logs of pods in the given namespace selected by the given list options.
func (f *CommonFramework) DumpLogsForPodsWithLabelsInNamespace(ctx context.Context, k8sClient kubernetes.Interface, namespace string, opts ...client.ListOption) error {
pods := &corev1.PodList{}
opts = append(opts, client.InNamespace(namespace))
if err := k8sClient.Client().List(ctx, pods, opts...); err != nil {
return err
}
var result error
for _, pod := range pods.Items {
if err := f.DumpLogsForPodInNamespace(ctx, k8sClient, namespace, pod.Name, &corev1.PodLogOptions{}); err != nil {
result = multierror.Append(result, err)
}
}
return result
}
// DumpLogsForPodInNamespace prints the logs of the pod with the given namespace and name.
func (f *CommonFramework) DumpLogsForPodInNamespace(ctx context.Context, k8sClient kubernetes.Interface, namespace, name string, options *corev1.PodLogOptions) error {
log := f.Logger.WithValues("pod", client.ObjectKey{Namespace: namespace, Name: name})
log.Info("Dumping logs for corev1.Pod")
podIf := k8sClient.Kubernetes().CoreV1().Pods(namespace)
logs, err := kubernetes.GetPodLogs(ctx, podIf, name, options)
if err != nil {
return err
}
scanner := bufio.NewScanner(bytes.NewReader(logs))
for scanner.Scan() {
log.Info(scanner.Text()) //nolint:logcheck
}
return nil
}
// dumpDeploymentInfoForNamespace prints information about all Deployments of a namespace
func (f *CommonFramework) dumpDeploymentInfoForNamespace(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface, namespace string) error {
log.Info("Dumping appsv1.Deployment resources")
deployments := &appsv1.DeploymentList{}
if err := k8sClient.Client().List(ctx, deployments, client.InNamespace(namespace)); err != nil {
return err
}
for _, deployment := range deployments.Items {
objectLog := log.WithValues("name", deployment.Name, "replicas", deployment.Status.Replicas, "availableReplicas", deployment.Status.AvailableReplicas)
if err := health.CheckDeployment(&deployment); err != nil {
objectLog.Info("Found unhealthy Deployment", "reason", err.Error(), "conditions", deployment.Status.Conditions)
continue
}
objectLog.Info("Found healthy Deployment")
}
return nil
}
// dumpStatefulSetInfoForNamespace prints information about all StatefulSets of a namespace
func (f *CommonFramework) dumpStatefulSetInfoForNamespace(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface, namespace string) error {
log.Info("Dumping appsv1.StatefulSet resources")
statefulSets := &appsv1.StatefulSetList{}
if err := k8sClient.Client().List(ctx, statefulSets, client.InNamespace(namespace)); err != nil {
return err
}
for _, statefulSet := range statefulSets.Items {
objectLog := log.WithValues("name", statefulSet.Name, "replicas", statefulSet.Status.Replicas, "readyReplicas", statefulSet.Status.ReadyReplicas)
if err := health.CheckStatefulSet(&statefulSet); err != nil {
objectLog.Info("Found unhealthy StatefulSet", "reason", err.Error(), "conditions", statefulSet.Status.Conditions)
continue
}
objectLog.Info("Found healthy StatefulSet")
}
return nil
}
// dumpDaemonSetInfoForNamespace prints information about all DaemonSets of a namespace
func (f *CommonFramework) dumpDaemonSetInfoForNamespace(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface, namespace string) error {
log.Info("Dumping appsv1.DaemonSet resources")
daemonSets := &appsv1.DaemonSetList{}
if err := k8sClient.Client().List(ctx, daemonSets, client.InNamespace(namespace)); err != nil {
return err
}
for _, ds := range daemonSets.Items {
objectLog := log.WithValues("name", ds.Name, "currentNumberScheduled", ds.Status.CurrentNumberScheduled, "desiredNumberScheduled", ds.Status.DesiredNumberScheduled)
if err := health.CheckDaemonSet(&ds); err != nil {
objectLog.Info("Found unhealthy DaemonSet", "reason", err.Error(), "conditions", ds.Status.Conditions)
continue
}
objectLog.Info("Found healthy DaemonSet")
}
return nil
}
// dumpNamespaceResource prints information about the Namespace itself
func (f *CommonFramework) dumpNamespaceResource(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface, namespace string) error {
log.Info("Dumping corev1.Namespace resources")
ns := &corev1.Namespace{}
if err := k8sClient.Client().Get(ctx, client.ObjectKey{Name: namespace}, ns); err != nil {
return err
}
log.Info("Found Namespace", "namespace", ns)
return nil
}
// dumpServiceInfoForNamespace prints information about all Services of a namespace
func (f *CommonFramework) dumpServiceInfoForNamespace(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface, namespace string) error {
log.Info("Dumping corev1.Service resources")
services := &corev1.ServiceList{}
if err := k8sClient.Client().List(ctx, services, client.InNamespace(namespace)); err != nil {
return err
}
for _, service := range services.Items {
log.Info("Found Service", "service", service)
}
return nil
}
// dumpVolumeInfoForNamespace prints information about all PVs and PVCs of a namespace
func (f *CommonFramework) dumpVolumeInfoForNamespace(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface, namespace string) error {
log.Info("Dumping corev1.PersistentVolumeClaim resources")
pvcs := &corev1.PersistentVolumeClaimList{}
if err := k8sClient.Client().List(ctx, pvcs, client.InNamespace(namespace)); err != nil {
return err
}
for _, pvc := range pvcs.Items {
log.Info("Found PersistentVolumeClaim", "persistentVolumeClaim", pvc)
}
log.Info("Dumping corev1.PersistentVolume resources")
pvs := &corev1.PersistentVolumeList{}
if err := k8sClient.Client().List(ctx, pvs, client.InNamespace(namespace)); err != nil {
return err
}
for _, pv := range pvs.Items {
log.Info("Found PersistentVolume", "persistentVolume", pv)
}
return nil
}
// dumpNodes prints information about all nodes
func (f *CommonFramework) dumpNodes(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface) error {
log.Info("Dumping corev1.Node resources")
nodes := &corev1.NodeList{}
if err := k8sClient.Client().List(ctx, nodes); err != nil {
return err
}
for _, node := range nodes.Items {
objectLog := log.WithValues("nodeName", node.Name)
if err := health.CheckNode(&node); err != nil {
objectLog.Info("Found unhealthy Node", "phase", node.Status.Phase, "reason", err.Error(), "conditions", node.Status.Conditions)
} else {
objectLog.Info("Found healthy Node", "phase", node.Status.Phase)
}
objectLog.Info("Node resource capacity", "cpu", node.Status.Capacity.Cpu().String(), "memory", node.Status.Capacity.Memory().String())
nodeMetric := &metricsv1beta1.NodeMetrics{}
if err := k8sClient.Client().Get(ctx, client.ObjectKey{Name: node.Name}, nodeMetric); err != nil {
objectLog.Error(err, "Unable to receive metrics for node")
continue
}
objectLog.Info("Node resource usage", "cpu", nodeMetric.Usage.Cpu().String(), "memory", nodeMetric.Usage.Memory().String())
}
return nil
}
// dumpPodInfoForNamespace prints node information of all pods in a namespace
func (f *CommonFramework) dumpPodInfoForNamespace(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface, namespace string) error {
log.Info("Dumping corev1.Pod resources")
pods := &corev1.PodList{}
if err := k8sClient.Client().List(ctx, pods, client.InNamespace(namespace)); err != nil {
return err
}
for _, pod := range pods.Items {
log.Info("Found pod",
"podName", pod.Name,
"phase", pod.Status.Phase,
"nodeName", pod.Spec.NodeName,
)
}
return nil
}
// dumpEventsInNamespace prints all events of a namespace
func (f *CommonFramework) dumpEventsInNamespace(ctx context.Context, log logr.Logger, k8sClient kubernetes.Interface, namespace string, filters ...EventFilterFunc) error {
log.Info("Dumping corev1.Event resources")
events := &corev1.EventList{}
if err := k8sClient.Client().List(ctx, events, client.InNamespace(namespace)); err != nil {
return err
}
if len(events.Items) > 1 {
sort.Sort(eventByFirstTimestamp(events.Items))
}
for _, event := range events.Items {
if ApplyFilters(event, filters...) {
log.Info("Found event",
"firstTimestamp", event.FirstTimestamp,
"involvedObjectName", event.InvolvedObject.Name,
"source", event.Source,
"reason", event.Reason,
"message", event.Message,
)
}
}
return nil
}
// EventFilterFunc is a function to filter events
type EventFilterFunc func(event corev1.Event) bool
// ApplyFilters checks if one of the EventFilters filters the current event
func ApplyFilters(event corev1.Event, filters ...EventFilterFunc) bool {
for _, filter := range filters {
if !filter(event) {
return false
}
}
return true
}
// eventByFirstTimestamp sorts a slice of events by first timestamp, using their involvedObject's name as a tie breaker.
type eventByFirstTimestamp []corev1.Event
func (o eventByFirstTimestamp) Len() int { return len(o) }
func (o eventByFirstTimestamp) Swap(i, j int) { o[i], o[j] = o[j], o[i] }
func (o eventByFirstTimestamp) Less(i, j int) bool {
if o[i].FirstTimestamp.Equal(&o[j].FirstTimestamp) {
return o[i].InvolvedObject.Name < o[j].InvolvedObject.Name
}
return o[i].FirstTimestamp.Before(&o[j].FirstTimestamp)
}