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gardenctl diag command to display diagnostic information of a shoot
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| // Copyright (c) 2018 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 cmd | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os" | ||
| "strconv" | ||
| "time" | ||
|
|
||
| "github.com/gardener/gardener/pkg/apis/core/v1beta1" | ||
| "github.com/olekukonko/tablewriter" | ||
| "github.com/spf13/cobra" | ||
| corev1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/tools/clientcmd" | ||
| metricsv "k8s.io/metrics/pkg/client/clientset/versioned" | ||
| ) | ||
|
|
||
| // NewDiagCmd returns diagnostic information for a shoot. | ||
| func NewDiagCmd(reader TargetReader, ioStreams IOStreams) *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: "diag", | ||
| Short: "Print shoot diagnostic information", | ||
| SilenceUsage: true, | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| target := reader.ReadTarget(pathTarget) | ||
| if !CheckShootIsTargeted(target) { | ||
| return errors.New("no shoot targeted") | ||
| } | ||
|
|
||
| shoot, err := FetchShootFromTarget(target) | ||
| checkError(err) | ||
| getShootInformation(shoot, target) | ||
| return nil | ||
| }, | ||
| } | ||
| return cmd | ||
| } | ||
|
|
||
| //getShootInformation prints all information regarding a shoot | ||
| func getShootInformation(shoot *v1beta1.Shoot, target TargetInterface) { | ||
| fmt.Println("The shoot diagnostic information are as follows:") | ||
| fmt.Println() | ||
| fmt.Println("Shoot: " + shoot.Name) | ||
| fmt.Println("Kubernetes Version: " + shoot.Spec.Kubernetes.Version) | ||
| fmt.Println("Created At: " + shoot.ObjectMeta.CreationTimestamp.String()) | ||
| annotationsMap := shoot.GetObjectMeta().GetAnnotations() | ||
| fmt.Println("Created By: " + annotationsMap["gardener.cloud/created-by"]) | ||
| fmt.Println("Cloud Profile: " + shoot.Spec.CloudProfileName) | ||
| fmt.Println("Region: " + shoot.Spec.Region) | ||
| fmt.Println("Purpose: " + *shoot.Spec.Purpose) | ||
| fmt.Println("Seed Name: " + *shoot.Status.SeedName) | ||
| fmt.Println() | ||
|
|
||
| fmt.Println("Last Operation:") | ||
| fmt.Println() | ||
| lastOperationMsg := []string{shoot.Status.LastOperation.Description, fmt.Sprintf("%v", shoot.Status.LastOperation.Type), fmt.Sprintf("%v", shoot.Status.LastOperation.State)} | ||
| table := tablewriter.NewWriter(os.Stdout) | ||
| table.SetHeader([]string{"Description", "Last Operation Type", "Last Operation Type State"}) | ||
| table.Append(lastOperationMsg) | ||
| table.Render() | ||
| fmt.Println() | ||
|
|
||
| fmt.Println("Shoot Conditions: ") | ||
| fmt.Println() | ||
| data := [][]string{} | ||
| for i := range shoot.Status.Conditions { | ||
| condition := shoot.Status.Conditions[i] | ||
| codesValue := condition.Codes | ||
| codesString := fmt.Sprintf("%v", codesValue) | ||
| data = append(data, []string{condition.Message, condition.LastTransitionTime.String(), codesString}) | ||
| } | ||
| table = tablewriter.NewWriter(os.Stdout) | ||
| table.SetHeader([]string{"Message", "Last Transition Time", "Codes"}) | ||
| for _, v := range data { | ||
| table.Append(v) | ||
| } | ||
| table.Render() | ||
| fmt.Println() | ||
| fmt.Println("Workers Groups:") | ||
| fmt.Println() | ||
| data = [][]string{} | ||
| table = tablewriter.NewWriter(os.Stdout) | ||
| for w := range shoot.Spec.Provider.Workers { | ||
| worker := shoot.Spec.Provider.Workers[w] | ||
| if worker.Volume != nil { | ||
| data = append(data, []string{worker.Name, strconv.Itoa(int(worker.Minimum)), strconv.Itoa(int(worker.Maximum)), fmt.Sprintf("%v", worker.MaxUnavailable), fmt.Sprintf("%v", worker.MaxSurge), worker.Machine.Image.Name, *worker.Machine.Image.Version, worker.Machine.Type, fmt.Sprintf("%v", worker.Zones), fmt.Sprintf("%v", worker.Volume.Name), fmt.Sprintf("%v", worker.Volume.Type), worker.Volume.VolumeSize}) | ||
| table.SetHeader([]string{"Worker Name", "Min", "Max", "Max Unavailable", "Max Surge", "Image Name", "Image Version", "Image Type", "Zones", "Volume Name", "Volume Type", "Volume Size"}) | ||
| } else { | ||
| data = append(data, []string{worker.Name, strconv.Itoa(int(worker.Minimum)), strconv.Itoa(int(worker.Maximum)), fmt.Sprintf("%v", worker.MaxUnavailable), fmt.Sprintf("%v", worker.MaxSurge), worker.Machine.Image.Name, *worker.Machine.Image.Version, worker.Machine.Type, fmt.Sprintf("%v", worker.Zones)}) | ||
| table.SetHeader([]string{"Worker Name", "Min", "Max", "Max Unavailable", "Max Surge", "Image Name", "Image Version", "Image Type", "Zones"}) | ||
| } | ||
| } | ||
| for _, v := range data { | ||
| table.Append(v) | ||
| } | ||
| table.Render() | ||
|
|
||
| if !shoot.Status.IsHibernated { | ||
| var err error | ||
| var shootClient kubernetes.Interface | ||
| if shootClient, err = target.K8SClientToKind(TargetKindShoot); err != nil { | ||
| checkError(err) | ||
| } | ||
| var nodes *corev1.NodeList | ||
| if nodes, err = shootClient.CoreV1().Nodes().List(metav1.ListOptions{}); err != nil { | ||
| checkError(err) | ||
| } | ||
|
|
||
| kubeconfig, err := ioutil.ReadFile(*kubeconfig) | ||
| checkError(err) | ||
| clientConfig, err := clientcmd.NewClientConfigFromBytes(kubeconfig) | ||
| checkError(err) | ||
| config, err := clientConfig.ClientConfig() | ||
| checkError(err) | ||
| metricsClientset, err := metricsv.NewForConfig(config) | ||
| checkError(err) | ||
| nodeMetricsList, err := metricsClientset.MetricsV1beta1().NodeMetricses().List(metav1.ListOptions{}) | ||
| checkError(err) | ||
| fmt.Println() | ||
| fmt.Println("Node Metrics:") | ||
| fmt.Println() | ||
| data = [][]string{} | ||
| for _, metric := range nodeMetricsList.Items { | ||
| cpuUsage, _ := metric.Usage.Cpu().AsInt64() | ||
| memUsage, _ := metric.Usage.Memory().AsInt64() | ||
|
|
||
| data = append(data, []string{metric.GetName(), fmt.Sprintf("%v", cpuUsage), fmt.Sprintf("%v", memUsage/1000)}) | ||
| } | ||
| table = tablewriter.NewWriter(os.Stdout) | ||
| table.SetHeader([]string{"Node Name", "CPU Usage (Core)", "Memory Usage (MB)"}) | ||
|
|
||
| for _, v := range data { | ||
| table.Append(v) | ||
| } | ||
| table.Render() | ||
| fmt.Println() | ||
| fmt.Println("System Components:") | ||
| fmt.Println() | ||
| systemPods, err := shootClient.CoreV1().Pods("kube-system").List(metav1.ListOptions{}) | ||
| checkError(err) | ||
| data := [][]string{} | ||
| for _, pod := range systemPods.Items { | ||
| readyNumber := 0 | ||
| totalNumber := 0 | ||
| for pss := range pod.Status.ContainerStatuses { | ||
| if pod.Status.ContainerStatuses[pss].Ready { | ||
| readyNumber++ | ||
| } | ||
| if pod.Status.ContainerStatuses[pss].State.Terminated == nil { | ||
| totalNumber++ | ||
| } | ||
| } | ||
| podstatusPhase := string(pod.Status.Phase) | ||
| podCreationTime := pod.GetCreationTimestamp() | ||
| age := time.Since(podCreationTime.Time).Round(time.Second) | ||
| timeString := fmt.Sprintf("%v", podCreationTime) | ||
|
|
||
| data = append(data, []string{pod.GetName(), podstatusPhase, strconv.Itoa(readyNumber), strconv.Itoa(totalNumber), timeString, age.String()}) | ||
| } | ||
| table := tablewriter.NewWriter(os.Stdout) | ||
| table.SetHeader([]string{"Name", "Phase", "Ready", "Total", "Created", "Age"}) | ||
| for _, v := range data { | ||
| table.Append(v) | ||
| } | ||
| table.Render() | ||
|
|
||
| daemonSets, err := shootClient.AppsV1().DaemonSets("kube-system").List(metav1.ListOptions{}) | ||
| checkError(err) | ||
| fmt.Println() | ||
| fmt.Println("DaemonSets:") | ||
| fmt.Println() | ||
| data = [][]string{} | ||
| for _, ds := range daemonSets.Items { | ||
| data = append(data, []string{ds.GetName(), strconv.Itoa(int(ds.Status.DesiredNumberScheduled)), strconv.Itoa(int(ds.Status.NumberAvailable))}) | ||
| } | ||
| table = tablewriter.NewWriter(os.Stdout) | ||
| table.SetHeader([]string{"Name", "Desired Number", "Current Number"}) | ||
| for _, v := range data { | ||
| table.Append(v) | ||
| } | ||
| table.Render() | ||
|
|
||
| fmt.Println() | ||
| fmt.Println("Nodes:") | ||
| fmt.Println() | ||
| data = [][]string{} | ||
| for _, n := range nodes.Items { | ||
| addString := "" | ||
| for a := range n.Status.Addresses { | ||
| if n.Status.Addresses[a].Type == "InternalIP" { | ||
| addString = n.Status.Addresses[a].Address | ||
| } | ||
| } | ||
| cpuCount, _ := n.Status.Capacity.Cpu().AsInt64() | ||
| memoryCount, _ := n.Status.Capacity.Memory().AsInt64() | ||
| data = append(data, []string{n.Name, n.Spec.ProviderID, addString, strconv.Itoa(int(cpuCount)), strconv.Itoa(int(memoryCount / 1000))}) | ||
| } | ||
| table = tablewriter.NewWriter(os.Stdout) | ||
| table.SetHeader([]string{"Node Name", "Provider ID", "Address", "CPU Cores", "Memory (MB)"}) | ||
| for _, v := range data { | ||
| table.Append(v) | ||
| } | ||
| table.Render() | ||
| fmt.Println() | ||
| fmt.Println("BlockingDisruptionBudgets:") | ||
| fmt.Println() | ||
| dbds, err := shootClient.PolicyV1beta1().PodDisruptionBudgets("kube-system").List(metav1.ListOptions{}) | ||
| checkError(err) | ||
| data = [][]string{} | ||
| for dbdsIndex := range dbds.Items { | ||
| pdb := dbds.Items[dbdsIndex] | ||
| data = append(data, []string{pdb.Spec.Selector.MatchLabels["k8s-app"], fmt.Sprintf("%v", pdb.Spec.MinAvailable), fmt.Sprintf("%v", pdb.Spec.MaxUnavailable)}) | ||
| } | ||
| table = tablewriter.NewWriter(os.Stdout) | ||
| table.SetHeader([]string{"Name", "Min Available", "Max Unavailable"}) | ||
| for _, v := range data { | ||
| table.Append(v) | ||
| } | ||
| table.Render() | ||
| fmt.Println() | ||
| fmt.Println("MutatingWebhookConfigurations:") | ||
| fmt.Println() | ||
| data = [][]string{} | ||
| mutatingWebhookConfigurations, err := shootClient.AdmissionregistrationV1beta1().MutatingWebhookConfigurations().List(metav1.ListOptions{}) | ||
| checkError(err) | ||
| for mwc := range mutatingWebhookConfigurations.Items { | ||
| whList := mutatingWebhookConfigurations.Items[mwc].Webhooks | ||
| for whIndex := range whList { | ||
| wh := whList[whIndex] | ||
| data = append(data, []string{wh.Name}) | ||
| } | ||
| } | ||
| table = tablewriter.NewWriter(os.Stdout) | ||
| table.SetHeader([]string{"MutatingWebhookConfiguration Name"}) | ||
|
|
||
| for _, v := range data { | ||
| table.Append(v) | ||
| } | ||
| table.Render() | ||
| seedClient, err := target.K8SClientToKind(TargetKindSeed) | ||
| checkError(err) | ||
| controlPlanePods, err := seedClient.CoreV1().Pods(shoot.Status.TechnicalID).List(metav1.ListOptions{}) | ||
| checkError(err) | ||
| fmt.Println() | ||
| fmt.Println("Control Plane Pods:") | ||
| fmt.Println() | ||
| data = [][]string{} | ||
| for _, pod := range controlPlanePods.Items { | ||
| readyNumber := 0 | ||
| totalNumber := 0 | ||
| for pss := range pod.Status.ContainerStatuses { | ||
| if pod.Status.ContainerStatuses[pss].Ready { | ||
| readyNumber++ | ||
| } | ||
| if pod.Status.ContainerStatuses[pss].State.Terminated == nil { | ||
| totalNumber++ | ||
| } | ||
| } | ||
| podstatusPhase := string(pod.Status.Phase) | ||
| podCreationTime := pod.GetCreationTimestamp() | ||
| age := time.Since(podCreationTime.Time).Round(time.Second) | ||
| data = append(data, []string{pod.GetName(), podstatusPhase, strconv.Itoa(readyNumber), strconv.Itoa(totalNumber), fmt.Sprintf("%v", podCreationTime), age.String()}) | ||
| } | ||
| table = tablewriter.NewWriter(os.Stdout) | ||
| table.SetHeader([]string{"Name", "Phase", "Ready Number", "Total Number", "Creation Time", "Age"}) | ||
|
|
||
| for _, v := range data { | ||
| table.Append(v) | ||
| } | ||
| table.Render() | ||
|
|
||
| } else { | ||
| fmt.Println() | ||
| fmt.Println("This shoot is now in hibernating status") | ||
| fmt.Println("Information like Nodes/Metrics/PDBs/Web hooks/etc will not be displayed") | ||
| } | ||
|
|
||
| } |
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