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describe.go
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describe.go
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/*
Copyright 2014 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.
*/
package internalversion
import (
"bytes"
"crypto/x509"
"fmt"
"io"
"net"
"net/url"
"reflect"
"sort"
"strconv"
"strings"
"text/tabwriter"
"time"
"github.com/golang/glog"
"github.com/fatih/camelcase"
versionedextension "k8s.io/api/extensions/v1beta1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/client-go/dynamic"
clientextensionsv1beta1 "k8s.io/client-go/kubernetes/typed/extensions/v1beta1"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/events"
"k8s.io/kubernetes/pkg/api/helper"
"k8s.io/kubernetes/pkg/api/helper/qos"
"k8s.io/kubernetes/pkg/api/legacyscheme"
"k8s.io/kubernetes/pkg/api/ref"
resourcehelper "k8s.io/kubernetes/pkg/api/resource"
"k8s.io/kubernetes/pkg/apis/apps"
"k8s.io/kubernetes/pkg/apis/autoscaling"
"k8s.io/kubernetes/pkg/apis/batch"
"k8s.io/kubernetes/pkg/apis/certificates"
"k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/apis/networking"
"k8s.io/kubernetes/pkg/apis/policy"
"k8s.io/kubernetes/pkg/apis/rbac"
"k8s.io/kubernetes/pkg/apis/scheduling"
"k8s.io/kubernetes/pkg/apis/storage"
storageutil "k8s.io/kubernetes/pkg/apis/storage/util"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
coreclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/internalversion"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
"k8s.io/kubernetes/pkg/fieldpath"
"k8s.io/kubernetes/pkg/printers"
"k8s.io/kubernetes/pkg/registry/rbac/validation"
"k8s.io/kubernetes/pkg/util/slice"
)
// Each level has 2 spaces for PrefixWriter
const (
LEVEL_0 = iota
LEVEL_1
LEVEL_2
LEVEL_3
)
// PrefixWriter can write text at various indentation levels.
type PrefixWriter interface {
// Write writes text with the specified indentation level.
Write(level int, format string, a ...interface{})
// WriteLine writes an entire line with no indentation level.
WriteLine(a ...interface{})
// Flush forces indendation to be reset.
Flush()
}
// prefixWriter implements PrefixWriter
type prefixWriter struct {
out io.Writer
}
var _ PrefixWriter = &prefixWriter{}
// NewPrefixWriter creates a new PrefixWriter.
func NewPrefixWriter(out io.Writer) PrefixWriter {
return &prefixWriter{out: out}
}
func (pw *prefixWriter) Write(level int, format string, a ...interface{}) {
levelSpace := " "
prefix := ""
for i := 0; i < level; i++ {
prefix += levelSpace
}
fmt.Fprintf(pw.out, prefix+format, a...)
}
func (pw *prefixWriter) WriteLine(a ...interface{}) {
fmt.Fprintln(pw.out, a...)
}
func (pw *prefixWriter) Flush() {
if f, ok := pw.out.(flusher); ok {
f.Flush()
}
}
func describerMap(c clientset.Interface) map[schema.GroupKind]printers.Describer {
m := map[schema.GroupKind]printers.Describer{
api.Kind("Pod"): &PodDescriber{c},
api.Kind("ReplicationController"): &ReplicationControllerDescriber{c},
api.Kind("Secret"): &SecretDescriber{c},
api.Kind("Service"): &ServiceDescriber{c},
api.Kind("ServiceAccount"): &ServiceAccountDescriber{c},
api.Kind("Node"): &NodeDescriber{c},
api.Kind("LimitRange"): &LimitRangeDescriber{c},
api.Kind("ResourceQuota"): &ResourceQuotaDescriber{c},
api.Kind("PersistentVolume"): &PersistentVolumeDescriber{c},
api.Kind("PersistentVolumeClaim"): &PersistentVolumeClaimDescriber{c},
api.Kind("Namespace"): &NamespaceDescriber{c},
api.Kind("Endpoints"): &EndpointsDescriber{c},
api.Kind("ConfigMap"): &ConfigMapDescriber{c},
api.Kind("PriorityClass"): &PriorityClassDescriber{c},
extensions.Kind("ReplicaSet"): &ReplicaSetDescriber{c},
extensions.Kind("NetworkPolicy"): &NetworkPolicyDescriber{c},
extensions.Kind("PodSecurityPolicy"): &PodSecurityPolicyDescriber{c},
autoscaling.Kind("HorizontalPodAutoscaler"): &HorizontalPodAutoscalerDescriber{c},
extensions.Kind("DaemonSet"): &DaemonSetDescriber{c},
extensions.Kind("Deployment"): &DeploymentDescriber{c, versionedExtensionsClientV1beta1(c)},
extensions.Kind("Ingress"): &IngressDescriber{c},
batch.Kind("Job"): &JobDescriber{c},
batch.Kind("CronJob"): &CronJobDescriber{c},
apps.Kind("StatefulSet"): &StatefulSetDescriber{c},
apps.Kind("Deployment"): &DeploymentDescriber{c, versionedExtensionsClientV1beta1(c)},
apps.Kind("DaemonSet"): &DaemonSetDescriber{c},
apps.Kind("ReplicaSet"): &ReplicaSetDescriber{c},
certificates.Kind("CertificateSigningRequest"): &CertificateSigningRequestDescriber{c},
storage.Kind("StorageClass"): &StorageClassDescriber{c},
policy.Kind("PodDisruptionBudget"): &PodDisruptionBudgetDescriber{c},
rbac.Kind("Role"): &RoleDescriber{c},
rbac.Kind("ClusterRole"): &ClusterRoleDescriber{c},
rbac.Kind("RoleBinding"): &RoleBindingDescriber{c},
rbac.Kind("ClusterRoleBinding"): &ClusterRoleBindingDescriber{c},
networking.Kind("NetworkPolicy"): &NetworkPolicyDescriber{c},
scheduling.Kind("PriorityClass"): &PriorityClassDescriber{c},
}
return m
}
// DescribableResources lists all resource types we can describe.
func DescribableResources() []string {
keys := make([]string, 0)
for k := range describerMap(nil) {
resource := strings.ToLower(k.Kind)
keys = append(keys, resource)
}
return keys
}
// DescriberFor returns the default describe functions for each of the standard
// Kubernetes types.
func DescriberFor(kind schema.GroupKind, c clientset.Interface) (printers.Describer, bool) {
f, ok := describerMap(c)[kind]
return f, ok
}
// GenericDescriberFor returns a generic describer for the specified mapping
// that uses only information available from runtime.Unstructured
func GenericDescriberFor(mapping *meta.RESTMapping, dynamic dynamic.Interface, events coreclient.EventsGetter) printers.Describer {
return &genericDescriber{mapping, dynamic, events}
}
type genericDescriber struct {
mapping *meta.RESTMapping
dynamic dynamic.Interface
events coreclient.EventsGetter
}
func (g *genericDescriber) Describe(namespace, name string, describerSettings printers.DescriberSettings) (output string, err error) {
apiResource := &metav1.APIResource{
Name: g.mapping.Resource,
Namespaced: g.mapping.Scope.Name() == meta.RESTScopeNameNamespace,
Kind: g.mapping.GroupVersionKind.Kind,
}
obj, err := g.dynamic.Resource(apiResource, namespace).Get(name, metav1.GetOptions{})
if err != nil {
return "", err
}
var events *api.EventList
if describerSettings.ShowEvents {
events, _ = g.events.Events(namespace).Search(legacyscheme.Scheme, obj)
}
return tabbedString(func(out io.Writer) error {
w := NewPrefixWriter(out)
w.Write(LEVEL_0, "Name:\t%s\n", obj.GetName())
w.Write(LEVEL_0, "Namespace:\t%s\n", obj.GetNamespace())
printLabelsMultiline(w, "Labels", obj.GetLabels())
printAnnotationsMultiline(w, "Annotations", obj.GetAnnotations())
printUnstructuredContent(w, LEVEL_0, obj.UnstructuredContent(), "", ".metadata.name", ".metadata.namespace", ".metadata.labels", ".metadata.annotations")
if events != nil {
DescribeEvents(events, w)
}
return nil
})
}
func printUnstructuredContent(w PrefixWriter, level int, content map[string]interface{}, skipPrefix string, skip ...string) {
fields := []string{}
for field := range content {
fields = append(fields, field)
}
sort.Strings(fields)
for _, field := range fields {
value := content[field]
switch typedValue := value.(type) {
case map[string]interface{}:
skipExpr := fmt.Sprintf("%s.%s", skipPrefix, field)
if slice.ContainsString(skip, skipExpr, nil) {
continue
}
w.Write(level, "%s:\n", smartLabelFor(field))
printUnstructuredContent(w, level+1, typedValue, skipExpr, skip...)
case []interface{}:
skipExpr := fmt.Sprintf("%s.%s", skipPrefix, field)
if slice.ContainsString(skip, skipExpr, nil) {
continue
}
w.Write(level, "%s:\n", smartLabelFor(field))
for _, child := range typedValue {
switch typedChild := child.(type) {
case map[string]interface{}:
printUnstructuredContent(w, level+1, typedChild, skipExpr, skip...)
default:
w.Write(level+1, "%v\n", typedChild)
}
}
default:
skipExpr := fmt.Sprintf("%s.%s", skipPrefix, field)
if slice.ContainsString(skip, skipExpr, nil) {
continue
}
w.Write(level, "%s:\t%v\n", smartLabelFor(field), typedValue)
}
}
}
func smartLabelFor(field string) string {
commonAcronyms := []string{"API", "URL", "UID", "OSB", "GUID"}
splitted := camelcase.Split(field)
for i := 0; i < len(splitted); i++ {
part := splitted[i]
if slice.ContainsString(commonAcronyms, strings.ToUpper(part), nil) {
part = strings.ToUpper(part)
} else {
part = strings.Title(part)
}
splitted[i] = part
}
return strings.Join(splitted, " ")
}
// DefaultObjectDescriber can describe the default Kubernetes objects.
var DefaultObjectDescriber printers.ObjectDescriber
func init() {
d := &Describers{}
err := d.Add(
describeLimitRange,
describeQuota,
describePod,
describeService,
describeReplicationController,
describeDaemonSet,
describeNode,
describeNamespace,
)
if err != nil {
glog.Fatalf("Cannot register describers: %v", err)
}
DefaultObjectDescriber = d
}
// NamespaceDescriber generates information about a namespace
type NamespaceDescriber struct {
clientset.Interface
}
func (d *NamespaceDescriber) Describe(namespace, name string, describerSettings printers.DescriberSettings) (string, error) {
ns, err := d.Core().Namespaces().Get(name, metav1.GetOptions{})
if err != nil {
return "", err
}
resourceQuotaList, err := d.Core().ResourceQuotas(name).List(metav1.ListOptions{})
if err != nil {
if errors.IsNotFound(err) {
// Server does not support resource quotas.
// Not an error, will not show resource quotas information.
resourceQuotaList = nil
} else {
return "", err
}
}
limitRangeList, err := d.Core().LimitRanges(name).List(metav1.ListOptions{})
if err != nil {
if errors.IsNotFound(err) {
// Server does not support limit ranges.
// Not an error, will not show limit ranges information.
limitRangeList = nil
} else {
return "", err
}
}
return describeNamespace(ns, resourceQuotaList, limitRangeList)
}
func describeNamespace(namespace *api.Namespace, resourceQuotaList *api.ResourceQuotaList, limitRangeList *api.LimitRangeList) (string, error) {
return tabbedString(func(out io.Writer) error {
w := NewPrefixWriter(out)
w.Write(LEVEL_0, "Name:\t%s\n", namespace.Name)
printLabelsMultiline(w, "Labels", namespace.Labels)
printAnnotationsMultiline(w, "Annotations", namespace.Annotations)
w.Write(LEVEL_0, "Status:\t%s\n", string(namespace.Status.Phase))
if resourceQuotaList != nil {
w.Write(LEVEL_0, "\n")
DescribeResourceQuotas(resourceQuotaList, w)
}
if limitRangeList != nil {
w.Write(LEVEL_0, "\n")
DescribeLimitRanges(limitRangeList, w)
}
return nil
})
}
func describeLimitRangeSpec(spec api.LimitRangeSpec, prefix string, w PrefixWriter) {
for i := range spec.Limits {
item := spec.Limits[i]
maxResources := item.Max
minResources := item.Min
defaultLimitResources := item.Default
defaultRequestResources := item.DefaultRequest
ratio := item.MaxLimitRequestRatio
set := map[api.ResourceName]bool{}
for k := range maxResources {
set[k] = true
}
for k := range minResources {
set[k] = true
}
for k := range defaultLimitResources {
set[k] = true
}
for k := range defaultRequestResources {
set[k] = true
}
for k := range ratio {
set[k] = true
}
for k := range set {
// if no value is set, we output -
maxValue := "-"
minValue := "-"
defaultLimitValue := "-"
defaultRequestValue := "-"
ratioValue := "-"
maxQuantity, maxQuantityFound := maxResources[k]
if maxQuantityFound {
maxValue = maxQuantity.String()
}
minQuantity, minQuantityFound := minResources[k]
if minQuantityFound {
minValue = minQuantity.String()
}
defaultLimitQuantity, defaultLimitQuantityFound := defaultLimitResources[k]
if defaultLimitQuantityFound {
defaultLimitValue = defaultLimitQuantity.String()
}
defaultRequestQuantity, defaultRequestQuantityFound := defaultRequestResources[k]
if defaultRequestQuantityFound {
defaultRequestValue = defaultRequestQuantity.String()
}
ratioQuantity, ratioQuantityFound := ratio[k]
if ratioQuantityFound {
ratioValue = ratioQuantity.String()
}
msg := "%s%s\t%v\t%v\t%v\t%v\t%v\t%v\n"
w.Write(LEVEL_0, msg, prefix, item.Type, k, minValue, maxValue, defaultRequestValue, defaultLimitValue, ratioValue)
}
}
}
// DescribeLimitRanges merges a set of limit range items into a single tabular description
func DescribeLimitRanges(limitRanges *api.LimitRangeList, w PrefixWriter) {
if len(limitRanges.Items) == 0 {
w.Write(LEVEL_0, "No resource limits.\n")
return
}
w.Write(LEVEL_0, "Resource Limits\n Type\tResource\tMin\tMax\tDefault Request\tDefault Limit\tMax Limit/Request Ratio\n")
w.Write(LEVEL_0, " ----\t--------\t---\t---\t---------------\t-------------\t-----------------------\n")
for _, limitRange := range limitRanges.Items {
describeLimitRangeSpec(limitRange.Spec, " ", w)
}
}
// DescribeResourceQuotas merges a set of quota items into a single tabular description of all quotas
func DescribeResourceQuotas(quotas *api.ResourceQuotaList, w PrefixWriter) {
if len(quotas.Items) == 0 {
w.Write(LEVEL_0, "No resource quota.\n")
return
}
sort.Sort(SortableResourceQuotas(quotas.Items))
w.Write(LEVEL_0, "Resource Quotas")
for _, q := range quotas.Items {
w.Write(LEVEL_0, "\n Name:\t%s\n", q.Name)
if len(q.Spec.Scopes) > 0 {
scopes := make([]string, 0, len(q.Spec.Scopes))
for _, scope := range q.Spec.Scopes {
scopes = append(scopes, string(scope))
}
sort.Strings(scopes)
w.Write(LEVEL_0, " Scopes:\t%s\n", strings.Join(scopes, ", "))
for _, scope := range scopes {
helpText := helpTextForResourceQuotaScope(api.ResourceQuotaScope(scope))
if len(helpText) > 0 {
w.Write(LEVEL_0, " * %s\n", helpText)
}
}
}
w.Write(LEVEL_0, " Resource\tUsed\tHard\n")
w.Write(LEVEL_0, " --------\t---\t---\n")
resources := make([]api.ResourceName, 0, len(q.Status.Hard))
for resource := range q.Status.Hard {
resources = append(resources, resource)
}
sort.Sort(SortableResourceNames(resources))
for _, resource := range resources {
hardQuantity := q.Status.Hard[resource]
usedQuantity := q.Status.Used[resource]
w.Write(LEVEL_0, " %s\t%s\t%s\n", string(resource), usedQuantity.String(), hardQuantity.String())
}
}
}
// LimitRangeDescriber generates information about a limit range
type LimitRangeDescriber struct {
clientset.Interface
}
func (d *LimitRangeDescriber) Describe(namespace, name string, describerSettings printers.DescriberSettings) (string, error) {
lr := d.Core().LimitRanges(namespace)
limitRange, err := lr.Get(name, metav1.GetOptions{})
if err != nil {
return "", err
}
return describeLimitRange(limitRange)
}
func describeLimitRange(limitRange *api.LimitRange) (string, error) {
return tabbedString(func(out io.Writer) error {
w := NewPrefixWriter(out)
w.Write(LEVEL_0, "Name:\t%s\n", limitRange.Name)
w.Write(LEVEL_0, "Namespace:\t%s\n", limitRange.Namespace)
w.Write(LEVEL_0, "Type\tResource\tMin\tMax\tDefault Request\tDefault Limit\tMax Limit/Request Ratio\n")
w.Write(LEVEL_0, "----\t--------\t---\t---\t---------------\t-------------\t-----------------------\n")
describeLimitRangeSpec(limitRange.Spec, "", w)
return nil
})
}
// ResourceQuotaDescriber generates information about a resource quota
type ResourceQuotaDescriber struct {
clientset.Interface
}
func (d *ResourceQuotaDescriber) Describe(namespace, name string, describerSettings printers.DescriberSettings) (string, error) {
rq := d.Core().ResourceQuotas(namespace)
resourceQuota, err := rq.Get(name, metav1.GetOptions{})
if err != nil {
return "", err
}
return describeQuota(resourceQuota)
}
func helpTextForResourceQuotaScope(scope api.ResourceQuotaScope) string {
switch scope {
case api.ResourceQuotaScopeTerminating:
return "Matches all pods that have an active deadline. These pods have a limited lifespan on a node before being actively terminated by the system."
case api.ResourceQuotaScopeNotTerminating:
return "Matches all pods that do not have an active deadline. These pods usually include long running pods whose container command is not expected to terminate."
case api.ResourceQuotaScopeBestEffort:
return "Matches all pods that do not have resource requirements set. These pods have a best effort quality of service."
case api.ResourceQuotaScopeNotBestEffort:
return "Matches all pods that have at least one resource requirement set. These pods have a burstable or guaranteed quality of service."
default:
return ""
}
}
func describeQuota(resourceQuota *api.ResourceQuota) (string, error) {
return tabbedString(func(out io.Writer) error {
w := NewPrefixWriter(out)
w.Write(LEVEL_0, "Name:\t%s\n", resourceQuota.Name)
w.Write(LEVEL_0, "Namespace:\t%s\n", resourceQuota.Namespace)
if len(resourceQuota.Spec.Scopes) > 0 {
scopes := make([]string, 0, len(resourceQuota.Spec.Scopes))
for _, scope := range resourceQuota.Spec.Scopes {
scopes = append(scopes, string(scope))
}
sort.Strings(scopes)
w.Write(LEVEL_0, "Scopes:\t%s\n", strings.Join(scopes, ", "))
for _, scope := range scopes {
helpText := helpTextForResourceQuotaScope(api.ResourceQuotaScope(scope))
if len(helpText) > 0 {
w.Write(LEVEL_0, " * %s\n", helpText)
}
}
}
w.Write(LEVEL_0, "Resource\tUsed\tHard\n")
w.Write(LEVEL_0, "--------\t----\t----\n")
resources := make([]api.ResourceName, 0, len(resourceQuota.Status.Hard))
for resource := range resourceQuota.Status.Hard {
resources = append(resources, resource)
}
sort.Sort(SortableResourceNames(resources))
msg := "%v\t%v\t%v\n"
for i := range resources {
resource := resources[i]
hardQuantity := resourceQuota.Status.Hard[resource]
usedQuantity := resourceQuota.Status.Used[resource]
w.Write(LEVEL_0, msg, resource, usedQuantity.String(), hardQuantity.String())
}
return nil
})
}
// PodDescriber generates information about a pod and the replication controllers that
// create it.
type PodDescriber struct {
clientset.Interface
}
func (d *PodDescriber) Describe(namespace, name string, describerSettings printers.DescriberSettings) (string, error) {
pod, err := d.Core().Pods(namespace).Get(name, metav1.GetOptions{})
if err != nil {
if describerSettings.ShowEvents {
eventsInterface := d.Core().Events(namespace)
selector := eventsInterface.GetFieldSelector(&name, &namespace, nil, nil)
options := metav1.ListOptions{FieldSelector: selector.String()}
events, err2 := eventsInterface.List(options)
if describerSettings.ShowEvents && err2 == nil && len(events.Items) > 0 {
return tabbedString(func(out io.Writer) error {
w := NewPrefixWriter(out)
w.Write(LEVEL_0, "Pod '%v': error '%v', but found events.\n", name, err)
DescribeEvents(events, w)
return nil
})
}
}
return "", err
}
var events *api.EventList
if describerSettings.ShowEvents {
if ref, err := ref.GetReference(legacyscheme.Scheme, pod); err != nil {
glog.Errorf("Unable to construct reference to '%#v': %v", pod, err)
} else {
ref.Kind = ""
events, _ = d.Core().Events(namespace).Search(legacyscheme.Scheme, ref)
}
}
return describePod(pod, events)
}
func describePod(pod *api.Pod, events *api.EventList) (string, error) {
return tabbedString(func(out io.Writer) error {
w := NewPrefixWriter(out)
w.Write(LEVEL_0, "Name:\t%s\n", pod.Name)
w.Write(LEVEL_0, "Namespace:\t%s\n", pod.Namespace)
if pod.Spec.Priority != nil {
w.Write(LEVEL_0, "Priority:\t%d\n", *pod.Spec.Priority)
w.Write(LEVEL_0, "PriorityClassName:\t%s\n", stringOrNone(pod.Spec.PriorityClassName))
}
if pod.Spec.NodeName == "" {
w.Write(LEVEL_0, "Node:\t<none>\n")
} else {
w.Write(LEVEL_0, "Node:\t%s\n", pod.Spec.NodeName+"/"+pod.Status.HostIP)
}
if pod.Status.StartTime != nil {
w.Write(LEVEL_0, "Start Time:\t%s\n", pod.Status.StartTime.Time.Format(time.RFC1123Z))
}
printLabelsMultiline(w, "Labels", pod.Labels)
printAnnotationsMultiline(w, "Annotations", pod.Annotations)
if pod.DeletionTimestamp != nil {
w.Write(LEVEL_0, "Status:\tTerminating (expires %s)\n", pod.DeletionTimestamp.Time.Format(time.RFC1123Z))
w.Write(LEVEL_0, "Termination Grace Period:\t%ds\n", *pod.DeletionGracePeriodSeconds)
} else {
w.Write(LEVEL_0, "Status:\t%s\n", string(pod.Status.Phase))
}
if len(pod.Status.Reason) > 0 {
w.Write(LEVEL_0, "Reason:\t%s\n", pod.Status.Reason)
}
if len(pod.Status.Message) > 0 {
w.Write(LEVEL_0, "Message:\t%s\n", pod.Status.Message)
}
w.Write(LEVEL_0, "IP:\t%s\n", pod.Status.PodIP)
if controlledBy := printController(pod); len(controlledBy) > 0 {
w.Write(LEVEL_0, "Controlled By:\t%s\n", controlledBy)
}
if len(pod.Spec.InitContainers) > 0 {
describeContainers("Init Containers", pod.Spec.InitContainers, pod.Status.InitContainerStatuses, EnvValueRetriever(pod), w, "")
}
describeContainers("Containers", pod.Spec.Containers, pod.Status.ContainerStatuses, EnvValueRetriever(pod), w, "")
if len(pod.Status.Conditions) > 0 {
w.Write(LEVEL_0, "Conditions:\n Type\tStatus\n")
for _, c := range pod.Status.Conditions {
w.Write(LEVEL_1, "%v \t%v \n",
c.Type,
c.Status)
}
}
describeVolumes(pod.Spec.Volumes, w, "")
if pod.Status.QOSClass != "" {
w.Write(LEVEL_0, "QoS Class:\t%s\n", pod.Status.QOSClass)
} else {
w.Write(LEVEL_0, "QoS Class:\t%s\n", qos.GetPodQOS(pod))
}
printLabelsMultiline(w, "Node-Selectors", pod.Spec.NodeSelector)
printPodTolerationsMultiline(w, "Tolerations", pod.Spec.Tolerations)
if events != nil {
DescribeEvents(events, w)
}
return nil
})
}
func printController(controllee metav1.Object) string {
if controllerRef := metav1.GetControllerOf(controllee); controllerRef != nil {
return fmt.Sprintf("%s/%s", controllerRef.Kind, controllerRef.Name)
}
return ""
}
func describeVolumes(volumes []api.Volume, w PrefixWriter, space string) {
if volumes == nil || len(volumes) == 0 {
w.Write(LEVEL_0, "%sVolumes:\t<none>\n", space)
return
}
w.Write(LEVEL_0, "%sVolumes:\n", space)
for _, volume := range volumes {
nameIndent := ""
if len(space) > 0 {
nameIndent = " "
}
w.Write(LEVEL_1, "%s%v:\n", nameIndent, volume.Name)
switch {
case volume.VolumeSource.HostPath != nil:
printHostPathVolumeSource(volume.VolumeSource.HostPath, w)
case volume.VolumeSource.EmptyDir != nil:
printEmptyDirVolumeSource(volume.VolumeSource.EmptyDir, w)
case volume.VolumeSource.GCEPersistentDisk != nil:
printGCEPersistentDiskVolumeSource(volume.VolumeSource.GCEPersistentDisk, w)
case volume.VolumeSource.AWSElasticBlockStore != nil:
printAWSElasticBlockStoreVolumeSource(volume.VolumeSource.AWSElasticBlockStore, w)
case volume.VolumeSource.GitRepo != nil:
printGitRepoVolumeSource(volume.VolumeSource.GitRepo, w)
case volume.VolumeSource.Secret != nil:
printSecretVolumeSource(volume.VolumeSource.Secret, w)
case volume.VolumeSource.ConfigMap != nil:
printConfigMapVolumeSource(volume.VolumeSource.ConfigMap, w)
case volume.VolumeSource.NFS != nil:
printNFSVolumeSource(volume.VolumeSource.NFS, w)
case volume.VolumeSource.ISCSI != nil:
printISCSIVolumeSource(volume.VolumeSource.ISCSI, w)
case volume.VolumeSource.Glusterfs != nil:
printGlusterfsVolumeSource(volume.VolumeSource.Glusterfs, w)
case volume.VolumeSource.PersistentVolumeClaim != nil:
printPersistentVolumeClaimVolumeSource(volume.VolumeSource.PersistentVolumeClaim, w)
case volume.VolumeSource.RBD != nil:
printRBDVolumeSource(volume.VolumeSource.RBD, w)
case volume.VolumeSource.Quobyte != nil:
printQuobyteVolumeSource(volume.VolumeSource.Quobyte, w)
case volume.VolumeSource.DownwardAPI != nil:
printDownwardAPIVolumeSource(volume.VolumeSource.DownwardAPI, w)
case volume.VolumeSource.AzureDisk != nil:
printAzureDiskVolumeSource(volume.VolumeSource.AzureDisk, w)
case volume.VolumeSource.VsphereVolume != nil:
printVsphereVolumeSource(volume.VolumeSource.VsphereVolume, w)
case volume.VolumeSource.Cinder != nil:
printCinderVolumeSource(volume.VolumeSource.Cinder, w)
case volume.VolumeSource.PhotonPersistentDisk != nil:
printPhotonPersistentDiskVolumeSource(volume.VolumeSource.PhotonPersistentDisk, w)
case volume.VolumeSource.PortworxVolume != nil:
printPortworxVolumeSource(volume.VolumeSource.PortworxVolume, w)
case volume.VolumeSource.ScaleIO != nil:
printScaleIOVolumeSource(volume.VolumeSource.ScaleIO, w)
case volume.VolumeSource.CephFS != nil:
printCephFSVolumeSource(volume.VolumeSource.CephFS, w)
case volume.VolumeSource.StorageOS != nil:
printStorageOSVolumeSource(volume.VolumeSource.StorageOS, w)
case volume.VolumeSource.FC != nil:
printFCVolumeSource(volume.VolumeSource.FC, w)
case volume.VolumeSource.AzureFile != nil:
printAzureFileVolumeSource(volume.VolumeSource.AzureFile, w)
case volume.VolumeSource.FlexVolume != nil:
printFlexVolumeSource(volume.VolumeSource.FlexVolume, w)
case volume.VolumeSource.Flocker != nil:
printFlockerVolumeSource(volume.VolumeSource.Flocker, w)
default:
w.Write(LEVEL_1, "<unknown>\n")
}
}
}
func printHostPathVolumeSource(hostPath *api.HostPathVolumeSource, w PrefixWriter) {
hostPathType := "<none>"
if hostPath.Type != nil {
hostPathType = string(*hostPath.Type)
}
w.Write(LEVEL_2, "Type:\tHostPath (bare host directory volume)\n"+
" Path:\t%v\n"+
" HostPathType:\t%v\n",
hostPath.Path, hostPathType)
}
func printEmptyDirVolumeSource(emptyDir *api.EmptyDirVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tEmptyDir (a temporary directory that shares a pod's lifetime)\n"+
" Medium:\t%v\n", emptyDir.Medium)
}
func printGCEPersistentDiskVolumeSource(gce *api.GCEPersistentDiskVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tGCEPersistentDisk (a Persistent Disk resource in Google Compute Engine)\n"+
" PDName:\t%v\n"+
" FSType:\t%v\n"+
" Partition:\t%v\n"+
" ReadOnly:\t%v\n",
gce.PDName, gce.FSType, gce.Partition, gce.ReadOnly)
}
func printAWSElasticBlockStoreVolumeSource(aws *api.AWSElasticBlockStoreVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tAWSElasticBlockStore (a Persistent Disk resource in AWS)\n"+
" VolumeID:\t%v\n"+
" FSType:\t%v\n"+
" Partition:\t%v\n"+
" ReadOnly:\t%v\n",
aws.VolumeID, aws.FSType, aws.Partition, aws.ReadOnly)
}
func printGitRepoVolumeSource(git *api.GitRepoVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tGitRepo (a volume that is pulled from git when the pod is created)\n"+
" Repository:\t%v\n"+
" Revision:\t%v\n",
git.Repository, git.Revision)
}
func printSecretVolumeSource(secret *api.SecretVolumeSource, w PrefixWriter) {
optional := secret.Optional != nil && *secret.Optional
w.Write(LEVEL_2, "Type:\tSecret (a volume populated by a Secret)\n"+
" SecretName:\t%v\n"+
" Optional:\t%v\n",
secret.SecretName, optional)
}
func printConfigMapVolumeSource(configMap *api.ConfigMapVolumeSource, w PrefixWriter) {
optional := configMap.Optional != nil && *configMap.Optional
w.Write(LEVEL_2, "Type:\tConfigMap (a volume populated by a ConfigMap)\n"+
" Name:\t%v\n"+
" Optional:\t%v\n",
configMap.Name, optional)
}
func printNFSVolumeSource(nfs *api.NFSVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tNFS (an NFS mount that lasts the lifetime of a pod)\n"+
" Server:\t%v\n"+
" Path:\t%v\n"+
" ReadOnly:\t%v\n",
nfs.Server, nfs.Path, nfs.ReadOnly)
}
func printQuobyteVolumeSource(quobyte *api.QuobyteVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tQuobyte (a Quobyte mount on the host that shares a pod's lifetime)\n"+
" Registry:\t%v\n"+
" Volume:\t%v\n"+
" ReadOnly:\t%v\n",
quobyte.Registry, quobyte.Volume, quobyte.ReadOnly)
}
func printPortworxVolumeSource(pwxVolume *api.PortworxVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tPortworxVolume (a Portworx Volume resource)\n"+
" VolumeID:\t%v\n",
pwxVolume.VolumeID)
}
func printISCSIVolumeSource(iscsi *api.ISCSIVolumeSource, w PrefixWriter) {
initiator := "<none>"
if iscsi.InitiatorName != nil {
initiator = *iscsi.InitiatorName
}
w.Write(LEVEL_2, "Type:\tISCSI (an ISCSI Disk resource that is attached to a kubelet's host machine and then exposed to the pod)\n"+
" TargetPortal:\t%v\n"+
" IQN:\t%v\n"+
" Lun:\t%v\n"+
" ISCSIInterface\t%v\n"+
" FSType:\t%v\n"+
" ReadOnly:\t%v\n"+
" Portals:\t%v\n"+
" DiscoveryCHAPAuth:\t%v\n"+
" SessionCHAPAuth:\t%v\n"+
" SecretRef:\t%v\n"+
" InitiatorName:\t%v\n",
iscsi.TargetPortal, iscsi.IQN, iscsi.Lun, iscsi.ISCSIInterface, iscsi.FSType, iscsi.ReadOnly, iscsi.Portals, iscsi.DiscoveryCHAPAuth, iscsi.SessionCHAPAuth, iscsi.SecretRef, initiator)
}
func printGlusterfsVolumeSource(glusterfs *api.GlusterfsVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tGlusterfs (a Glusterfs mount on the host that shares a pod's lifetime)\n"+
" EndpointsName:\t%v\n"+
" Path:\t%v\n"+
" ReadOnly:\t%v\n",
glusterfs.EndpointsName, glusterfs.Path, glusterfs.ReadOnly)
}
func printPersistentVolumeClaimVolumeSource(claim *api.PersistentVolumeClaimVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tPersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)\n"+
" ClaimName:\t%v\n"+
" ReadOnly:\t%v\n",
claim.ClaimName, claim.ReadOnly)
}
func printRBDVolumeSource(rbd *api.RBDVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tRBD (a Rados Block Device mount on the host that shares a pod's lifetime)\n"+
" CephMonitors:\t%v\n"+
" RBDImage:\t%v\n"+
" FSType:\t%v\n"+
" RBDPool:\t%v\n"+
" RadosUser:\t%v\n"+
" Keyring:\t%v\n"+
" SecretRef:\t%v\n"+
" ReadOnly:\t%v\n",
rbd.CephMonitors, rbd.RBDImage, rbd.FSType, rbd.RBDPool, rbd.RadosUser, rbd.Keyring, rbd.SecretRef, rbd.ReadOnly)
}
func printRBDPersistentVolumeSource(rbd *api.RBDPersistentVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tRBD (a Rados Block Device mount on the host that shares a pod's lifetime)\n"+
" CephMonitors:\t%v\n"+
" RBDImage:\t%v\n"+
" FSType:\t%v\n"+
" RBDPool:\t%v\n"+
" RadosUser:\t%v\n"+
" Keyring:\t%v\n"+
" SecretRef:\t%v\n"+
" ReadOnly:\t%v\n",
rbd.CephMonitors, rbd.RBDImage, rbd.FSType, rbd.RBDPool, rbd.RadosUser, rbd.Keyring, rbd.SecretRef, rbd.ReadOnly)
}
func printDownwardAPIVolumeSource(d *api.DownwardAPIVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tDownwardAPI (a volume populated by information about the pod)\n Items:\n")
for _, mapping := range d.Items {
if mapping.FieldRef != nil {
w.Write(LEVEL_3, "%v -> %v\n", mapping.FieldRef.FieldPath, mapping.Path)
}
if mapping.ResourceFieldRef != nil {
w.Write(LEVEL_3, "%v -> %v\n", mapping.ResourceFieldRef.Resource, mapping.Path)
}
}
}
func printAzureDiskVolumeSource(d *api.AzureDiskVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tAzureDisk (an Azure Data Disk mount on the host and bind mount to the pod)\n"+
" DiskName:\t%v\n"+
" DiskURI:\t%v\n"+
" Kind: \t%v\n"+
" FSType:\t%v\n"+
" CachingMode:\t%v\n"+
" ReadOnly:\t%v\n",
d.DiskName, d.DataDiskURI, *d.Kind, *d.FSType, *d.CachingMode, *d.ReadOnly)
}
func printVsphereVolumeSource(vsphere *api.VsphereVirtualDiskVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tvSphereVolume (a Persistent Disk resource in vSphere)\n"+
" VolumePath:\t%v\n"+
" FSType:\t%v\n",
" StoragePolicyName:\t%v\n",
vsphere.VolumePath, vsphere.FSType, vsphere.StoragePolicyName)
}
func printPhotonPersistentDiskVolumeSource(photon *api.PhotonPersistentDiskVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tPhotonPersistentDisk (a Persistent Disk resource in photon platform)\n"+
" PdID:\t%v\n"+
" FSType:\t%v\n",
photon.PdID, photon.FSType)
}
func printCinderVolumeSource(cinder *api.CinderVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tCinder (a Persistent Disk resource in OpenStack)\n"+
" VolumeID:\t%v\n"+
" FSType:\t%v\n"+
" ReadOnly:\t%v\n",
cinder.VolumeID, cinder.FSType, cinder.ReadOnly)
}
func printScaleIOVolumeSource(sio *api.ScaleIOVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tScaleIO (a persistent volume backed by a block device in ScaleIO)\n"+
" Gateway:\t%v\n"+
" System:\t%v\n"+
" Protection Domain:\t%v\n"+
" Storage Pool:\t%v\n"+
" Storage Mode:\t%v\n"+
" VolumeName:\t%v\n"+
" FSType:\t%v\n"+
" ReadOnly:\t%v\n",
sio.Gateway, sio.System, sio.ProtectionDomain, sio.StoragePool, sio.StorageMode, sio.VolumeName, sio.FSType, sio.ReadOnly)
}
func printScaleIOPersistentVolumeSource(sio *api.ScaleIOPersistentVolumeSource, w PrefixWriter) {
var secretNS, secretName string
if sio.SecretRef != nil {
secretName = sio.SecretRef.Name
secretNS = sio.SecretRef.Namespace
}
w.Write(LEVEL_2, "Type:\tScaleIO (a persistent volume backed by a block device in ScaleIO)\n"+
" Gateway:\t%v\n"+
" System:\t%v\n"+
" Protection Domain:\t%v\n"+
" Storage Pool:\t%v\n"+
" Storage Mode:\t%v\n"+
" VolumeName:\t%v\n"+
" SecretName:\t%v\n"+
" SecretNamespace:\t%v\n"+
" FSType:\t%v\n"+
" ReadOnly:\t%v\n",
sio.Gateway, sio.System, sio.ProtectionDomain, sio.StoragePool, sio.StorageMode, sio.VolumeName, secretName, secretNS, sio.FSType, sio.ReadOnly)
}
func printLocalVolumeSource(ls *api.LocalVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tLocalVolume (a persistent volume backed by local storage on a node)\n"+
" Path:\t%v\n",
ls.Path)
}
func printCephFSVolumeSource(cephfs *api.CephFSVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tCephFS (a CephFS mount on the host that shares a pod's lifetime)\n"+
" Monitors:\t%v\n"+
" Path:\t%v\n"+
" User:\t%v\n"+
" SecretFile:\t%v\n"+
" SecretRef:\t%v\n"+
" ReadOnly:\t%v\n",
cephfs.Monitors, cephfs.Path, cephfs.User, cephfs.SecretFile, cephfs.SecretRef, cephfs.ReadOnly)
}
func printCephFSPersistentVolumeSource(cephfs *api.CephFSPersistentVolumeSource, w PrefixWriter) {
w.Write(LEVEL_2, "Type:\tCephFS (a CephFS mount on the host that shares a pod's lifetime)\n"+
" Monitors:\t%v\n"+
" Path:\t%v\n"+
" User:\t%v\n"+