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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 kubectl
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net"
"net/url"
"reflect"
"sort"
"strings"
"time"
"k8s.io/kubernetes/federation/apis/federation"
fed_clientset "k8s.io/kubernetes/federation/client/clientset_generated/federation_internalclientset"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/api/resource"
"k8s.io/kubernetes/pkg/api/unversioned"
"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"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
client "k8s.io/kubernetes/pkg/client/unversioned"
adapter "k8s.io/kubernetes/pkg/client/unversioned/adapters/internalclientset"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
"k8s.io/kubernetes/pkg/fieldpath"
"k8s.io/kubernetes/pkg/fields"
"k8s.io/kubernetes/pkg/kubelet/qos"
"k8s.io/kubernetes/pkg/labels"
"k8s.io/kubernetes/pkg/types"
utilcertificates "k8s.io/kubernetes/pkg/util/certificates"
"k8s.io/kubernetes/pkg/util/intstr"
"k8s.io/kubernetes/pkg/util/sets"
"github.com/golang/glog"
)
// Describer generates output for the named resource or an error
// if the output could not be generated. Implementers typically
// abstract the retrieval of the named object from a remote server.
type Describer interface {
Describe(namespace, name string, describerSettings DescriberSettings) (output string, err error)
}
// DescriberSettings holds display configuration for each object
// describer to control what is printed.
type DescriberSettings struct {
ShowEvents bool
}
// ObjectDescriber is an interface for displaying arbitrary objects with extra
// information. Use when an object is in hand (on disk, or already retrieved).
// Implementers may ignore the additional information passed on extra, or use it
// by default. ObjectDescribers may return ErrNoDescriber if no suitable describer
// is found.
type ObjectDescriber interface {
DescribeObject(object interface{}, extra ...interface{}) (output string, err error)
}
// ErrNoDescriber is a structured error indicating the provided object or objects
// cannot be described.
type ErrNoDescriber struct {
Types []string
}
// Error implements the error interface.
func (e ErrNoDescriber) Error() string {
return fmt.Sprintf("no describer has been defined for %v", e.Types)
}
func describerMap(c *client.Client) map[unversioned.GroupKind]Describer {
m := map[unversioned.GroupKind]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},
extensions.Kind("ReplicaSet"): &ReplicaSetDescriber{c},
extensions.Kind("HorizontalPodAutoscaler"): &HorizontalPodAutoscalerDescriber{c},
extensions.Kind("NetworkPolicy"): &NetworkPolicyDescriber{c},
autoscaling.Kind("HorizontalPodAutoscaler"): &HorizontalPodAutoscalerDescriber{c},
extensions.Kind("DaemonSet"): &DaemonSetDescriber{c},
extensions.Kind("Deployment"): &DeploymentDescriber{adapter.FromUnversionedClient(c)},
extensions.Kind("Job"): &JobDescriber{c},
extensions.Kind("Ingress"): &IngressDescriber{c},
batch.Kind("Job"): &JobDescriber{c},
batch.Kind("ScheduledJob"): &ScheduledJobDescriber{adapter.FromUnversionedClient(c)},
apps.Kind("PetSet"): &PetSetDescriber{c},
certificates.Kind("CertificateSigningRequest"): &CertificateSigningRequestDescriber{c},
}
return m
}
// List of 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
}
// Describer returns the default describe functions for each of the standard
// Kubernetes types.
func DescriberFor(kind unversioned.GroupKind, c *client.Client) (Describer, bool) {
f, ok := describerMap(c)[kind]
return f, ok
}
// DefaultObjectDescriber can describe the default Kubernetes objects.
var DefaultObjectDescriber 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 {
client.Interface
}
func (d *NamespaceDescriber) Describe(namespace, name string, describerSettings DescriberSettings) (string, error) {
ns, err := d.Namespaces().Get(name)
if err != nil {
return "", err
}
resourceQuotaList, err := d.ResourceQuotas(name).List(api.ListOptions{})
if err != nil {
return "", err
}
limitRangeList, err := d.LimitRanges(name).List(api.ListOptions{})
if err != nil {
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 {
fmt.Fprintf(out, "Name:\t%s\n", namespace.Name)
printLabelsMultiline(out, "Labels", namespace.Labels)
fmt.Fprintf(out, "Status:\t%s\n", string(namespace.Status.Phase))
if resourceQuotaList != nil {
fmt.Fprintf(out, "\n")
DescribeResourceQuotas(resourceQuotaList, out)
}
if limitRangeList != nil {
fmt.Fprintf(out, "\n")
DescribeLimitRanges(limitRangeList, out)
}
return nil
})
}
// DescribeLimitRanges merges a set of limit range items into a single tabular description
func DescribeLimitRanges(limitRanges *api.LimitRangeList, w io.Writer) {
if len(limitRanges.Items) == 0 {
fmt.Fprint(w, "No resource limits.\n")
return
}
fmt.Fprintf(w, "Resource Limits\n Type\tResource\tMin\tMax\tDefault Request\tDefault Limit\tMax Limit/Request Ratio\n")
fmt.Fprintf(w, " ----\t--------\t---\t---\t---------------\t-------------\t-----------------------\n")
for _, limitRange := range limitRanges.Items {
for i := range limitRange.Spec.Limits {
item := limitRange.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\t%v\t%v\t%v\t%v\t%v\t%v\n"
fmt.Fprintf(w, msg, item.Type, k, minValue, maxValue, defaultRequestValue, defaultLimitValue, ratioValue)
}
}
}
}
// DescribeResourceQuotas merges a set of quota items into a single tabular description of all quotas
func DescribeResourceQuotas(quotas *api.ResourceQuotaList, w io.Writer) {
if len(quotas.Items) == 0 {
fmt.Fprint(w, "No resource quota.\n")
return
}
sort.Sort(SortableResourceQuotas(quotas.Items))
fmt.Fprint(w, "Resource Quotas")
for _, q := range quotas.Items {
fmt.Fprintf(w, "\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)
fmt.Fprintf(w, " Scopes:\t%s\n", strings.Join(scopes, ", "))
for _, scope := range scopes {
helpText := helpTextForResourceQuotaScope(api.ResourceQuotaScope(scope))
if len(helpText) > 0 {
fmt.Fprintf(w, " * %s\n", helpText)
}
}
}
fmt.Fprintf(w, " Resource\tUsed\tHard\n")
fmt.Fprint(w, " --------\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]
fmt.Fprintf(w, " %s\t%s\t%s\n", string(resource), usedQuantity.String(), hardQuantity.String())
}
}
}
// LimitRangeDescriber generates information about a limit range
type LimitRangeDescriber struct {
client.Interface
}
func (d *LimitRangeDescriber) Describe(namespace, name string, describerSettings DescriberSettings) (string, error) {
lr := d.LimitRanges(namespace)
limitRange, err := lr.Get(name)
if err != nil {
return "", err
}
return describeLimitRange(limitRange)
}
func describeLimitRange(limitRange *api.LimitRange) (string, error) {
return tabbedString(func(out io.Writer) error {
fmt.Fprintf(out, "Name:\t%s\n", limitRange.Name)
fmt.Fprintf(out, "Namespace:\t%s\n", limitRange.Namespace)
fmt.Fprintf(out, "Type\tResource\tMin\tMax\tDefault Request\tDefault Limit\tMax Limit/Request Ratio\n")
fmt.Fprintf(out, "----\t--------\t---\t---\t---------------\t-------------\t-----------------------\n")
for i := range limitRange.Spec.Limits {
item := limitRange.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 := "%v\t%v\t%v\t%v\t%v\t%v\t%v\n"
fmt.Fprintf(out, msg, item.Type, k, minValue, maxValue, defaultRequestValue, defaultLimitValue, ratioValue)
}
}
return nil
})
}
// ResourceQuotaDescriber generates information about a resource quota
type ResourceQuotaDescriber struct {
client.Interface
}
func (d *ResourceQuotaDescriber) Describe(namespace, name string, describerSettings DescriberSettings) (string, error) {
rq := d.ResourceQuotas(namespace)
resourceQuota, err := rq.Get(name)
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."
case api.ResourceQuotaScopeNotTerminating:
return "Matches all pods that do not have an active deadline."
case api.ResourceQuotaScopeBestEffort:
return "Matches all pods that have best effort quality of service."
case api.ResourceQuotaScopeNotBestEffort:
return "Matches all pods that do not have best effort quality of service."
default:
return ""
}
}
func describeQuota(resourceQuota *api.ResourceQuota) (string, error) {
return tabbedString(func(out io.Writer) error {
fmt.Fprintf(out, "Name:\t%s\n", resourceQuota.Name)
fmt.Fprintf(out, "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)
fmt.Fprintf(out, "Scopes:\t%s\n", strings.Join(scopes, ", "))
for _, scope := range scopes {
helpText := helpTextForResourceQuotaScope(api.ResourceQuotaScope(scope))
if len(helpText) > 0 {
fmt.Fprintf(out, " * %s\n", helpText)
}
}
}
fmt.Fprintf(out, "Resource\tUsed\tHard\n")
fmt.Fprintf(out, "--------\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]
fmt.Fprintf(out, msg, resource, usedQuantity.String(), hardQuantity.String())
}
return nil
})
}
// PodDescriber generates information about a pod and the replication controllers that
// create it.
type PodDescriber struct {
client.Interface
}
func (d *PodDescriber) Describe(namespace, name string, describerSettings DescriberSettings) (string, error) {
pod, err := d.Pods(namespace).Get(name)
if err != nil {
if describerSettings.ShowEvents {
eventsInterface := d.Events(namespace)
selector := eventsInterface.GetFieldSelector(&name, &namespace, nil, nil)
options := api.ListOptions{FieldSelector: selector}
events, err2 := eventsInterface.List(options)
if describerSettings.ShowEvents && err2 == nil && len(events.Items) > 0 {
return tabbedString(func(out io.Writer) error {
fmt.Fprintf(out, "Pod '%v': error '%v', but found events.\n", name, err)
DescribeEvents(events, out)
return nil
})
}
}
return "", err
}
var events *api.EventList
if describerSettings.ShowEvents {
if ref, err := api.GetReference(pod); err != nil {
glog.Errorf("Unable to construct reference to '%#v': %v", pod, err)
} else {
ref.Kind = ""
events, _ = d.Events(namespace).Search(ref)
}
}
return describePod(pod, events)
}
func describePod(pod *api.Pod, events *api.EventList) (string, error) {
return tabbedString(func(out io.Writer) error {
fmt.Fprintf(out, "Name:\t%s\n", pod.Name)
fmt.Fprintf(out, "Namespace:\t%s\n", pod.Namespace)
fmt.Fprintf(out, "Node:\t%s\n", pod.Spec.NodeName+"/"+pod.Status.HostIP)
if pod.Status.StartTime != nil {
fmt.Fprintf(out, "Start Time:\t%s\n", pod.Status.StartTime.Time.Format(time.RFC1123Z))
}
printLabelsMultiline(out, "Labels", pod.Labels)
if pod.DeletionTimestamp != nil {
fmt.Fprintf(out, "Status:\tTerminating (expires %s)\n", pod.DeletionTimestamp.Time.Format(time.RFC1123Z))
fmt.Fprintf(out, "Termination Grace Period:\t%ds\n", *pod.DeletionGracePeriodSeconds)
} else {
fmt.Fprintf(out, "Status:\t%s\n", string(pod.Status.Phase))
}
if len(pod.Status.Reason) > 0 {
fmt.Fprintf(out, "Reason:\t%s\n", pod.Status.Reason)
}
if len(pod.Status.Message) > 0 {
fmt.Fprintf(out, "Message:\t%s\n", pod.Status.Message)
}
fmt.Fprintf(out, "IP:\t%s\n", pod.Status.PodIP)
fmt.Fprintf(out, "Controllers:\t%s\n", printControllers(pod.Annotations))
if len(pod.Spec.InitContainers) > 0 {
describeContainers("Init Containers", pod.Spec.InitContainers, pod.Status.InitContainerStatuses, EnvValueRetriever(pod), out, "")
}
describeContainers("Containers", pod.Spec.Containers, pod.Status.ContainerStatuses, EnvValueRetriever(pod), out, "")
if len(pod.Status.Conditions) > 0 {
fmt.Fprint(out, "Conditions:\n Type\tStatus\n")
for _, c := range pod.Status.Conditions {
fmt.Fprintf(out, " %v \t%v \n",
c.Type,
c.Status)
}
}
describeVolumes(pod.Spec.Volumes, out, "")
fmt.Fprintf(out, "QoS Class:\t%s\n", qos.GetPodQOS(pod))
printTolerationsInAnnotationMultiline(out, "Tolerations", pod.Annotations)
if events != nil {
DescribeEvents(events, out)
}
return nil
})
}
func printControllers(annotation map[string]string) string {
value, ok := annotation[api.CreatedByAnnotation]
if ok {
var r api.SerializedReference
err := json.Unmarshal([]byte(value), &r)
if err == nil {
return fmt.Sprintf("%s/%s", r.Reference.Kind, r.Reference.Name)
}
}
return "<none>"
}
// TODO: Do a better job at indenting, maybe by using a prefix writer
func describeVolumes(volumes []api.Volume, out io.Writer, space string) {
if volumes == nil || len(volumes) == 0 {
fmt.Fprintf(out, "%sNo volumes.\n", space)
return
}
fmt.Fprintf(out, "%sVolumes:\n", space)
for _, volume := range volumes {
nameIndent := ""
if len(space) > 0 {
nameIndent = " "
}
fmt.Fprintf(out, " %s%v:\n", nameIndent, volume.Name)
switch {
case volume.VolumeSource.HostPath != nil:
printHostPathVolumeSource(volume.VolumeSource.HostPath, out)
case volume.VolumeSource.EmptyDir != nil:
printEmptyDirVolumeSource(volume.VolumeSource.EmptyDir, out)
case volume.VolumeSource.GCEPersistentDisk != nil:
printGCEPersistentDiskVolumeSource(volume.VolumeSource.GCEPersistentDisk, out)
case volume.VolumeSource.AWSElasticBlockStore != nil:
printAWSElasticBlockStoreVolumeSource(volume.VolumeSource.AWSElasticBlockStore, out)
case volume.VolumeSource.GitRepo != nil:
printGitRepoVolumeSource(volume.VolumeSource.GitRepo, out)
case volume.VolumeSource.Secret != nil:
printSecretVolumeSource(volume.VolumeSource.Secret, out)
case volume.VolumeSource.ConfigMap != nil:
printConfigMapVolumeSource(volume.VolumeSource.ConfigMap, out)
case volume.VolumeSource.NFS != nil:
printNFSVolumeSource(volume.VolumeSource.NFS, out)
case volume.VolumeSource.ISCSI != nil:
printISCSIVolumeSource(volume.VolumeSource.ISCSI, out)
case volume.VolumeSource.Glusterfs != nil:
printGlusterfsVolumeSource(volume.VolumeSource.Glusterfs, out)
case volume.VolumeSource.PersistentVolumeClaim != nil:
printPersistentVolumeClaimVolumeSource(volume.VolumeSource.PersistentVolumeClaim, out)
case volume.VolumeSource.RBD != nil:
printRBDVolumeSource(volume.VolumeSource.RBD, out)
case volume.VolumeSource.Quobyte != nil:
printQuobyteVolumeSource(volume.VolumeSource.Quobyte, out)
case volume.VolumeSource.DownwardAPI != nil:
printDownwardAPIVolumeSource(volume.VolumeSource.DownwardAPI, out)
case volume.VolumeSource.AzureDisk != nil:
printAzureDiskVolumeSource(volume.VolumeSource.AzureDisk, out)
default:
fmt.Fprintf(out, " <unknown>\n")
}
}
}
func printHostPathVolumeSource(hostPath *api.HostPathVolumeSource, out io.Writer) {
fmt.Fprintf(out, " Type:\tHostPath (bare host directory volume)\n"+
" Path:\t%v\n", hostPath.Path)
}
func printEmptyDirVolumeSource(emptyDir *api.EmptyDirVolumeSource, out io.Writer) {
fmt.Fprintf(out, " Type:\tEmptyDir (a temporary directory that shares a pod's lifetime)\n"+
" Medium:\t%v\n", emptyDir.Medium)
}
func printGCEPersistentDiskVolumeSource(gce *api.GCEPersistentDiskVolumeSource, out io.Writer) {
fmt.Fprintf(out, " 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, out io.Writer) {
fmt.Fprintf(out, " 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, out io.Writer) {
fmt.Fprintf(out, " 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, out io.Writer) {
fmt.Fprintf(out, " Type:\tSecret (a volume populated by a Secret)\n"+
" SecretName:\t%v\n", secret.SecretName)
}
func printConfigMapVolumeSource(configMap *api.ConfigMapVolumeSource, out io.Writer) {
fmt.Fprintf(out, " Type:\tConfigMap (a volume populated by a ConfigMap)\n"+
" Name:\t%v\n", configMap.Name)
}
func printNFSVolumeSource(nfs *api.NFSVolumeSource, out io.Writer) {
fmt.Fprintf(out, " 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, out io.Writer) {
fmt.Fprintf(out, " 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 printISCSIVolumeSource(iscsi *api.ISCSIVolumeSource, out io.Writer) {
fmt.Fprintf(out, " 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",
iscsi.TargetPortal, iscsi.IQN, iscsi.Lun, iscsi.ISCSIInterface, iscsi.FSType, iscsi.ReadOnly)
}
func printGlusterfsVolumeSource(glusterfs *api.GlusterfsVolumeSource, out io.Writer) {
fmt.Fprintf(out, " 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, out io.Writer) {
fmt.Fprintf(out, " 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, out io.Writer) {
fmt.Fprintf(out, " 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, out io.Writer) {
fmt.Fprintf(out, " Type:\tDownwardAPI (a volume populated by information about the pod)\n Items:\n")
for _, mapping := range d.Items {
if mapping.FieldRef != nil {
fmt.Fprintf(out, " %v -> %v\n", mapping.FieldRef.FieldPath, mapping.Path)
}
if mapping.ResourceFieldRef != nil {
fmt.Fprintf(out, " %v -> %v\n", mapping.ResourceFieldRef.Resource, mapping.Path)
}
}
}
func printAzureDiskVolumeSource(d *api.AzureDiskVolumeSource, out io.Writer) {
fmt.Fprintf(out, " 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"+
" FSType:\t%v\n"+
" CachingMode:\t%v\n"+
" ReadOnly:\t%v\n",
d.DiskName, d.DataDiskURI, *d.FSType, *d.CachingMode, *d.ReadOnly)
}
type PersistentVolumeDescriber struct {
client.Interface
}
func (d *PersistentVolumeDescriber) Describe(namespace, name string, describerSettings DescriberSettings) (string, error) {
c := d.PersistentVolumes()
pv, err := c.Get(name)
if err != nil {
return "", err
}
storage := pv.Spec.Capacity[api.ResourceStorage]
var events *api.EventList
if describerSettings.ShowEvents {
events, _ = d.Events(namespace).Search(pv)
}
return tabbedString(func(out io.Writer) error {
fmt.Fprintf(out, "Name:\t%s\n", pv.Name)
printLabelsMultiline(out, "Labels", pv.Labels)
fmt.Fprintf(out, "Status:\t%s\n", pv.Status.Phase)
if pv.Spec.ClaimRef != nil {
fmt.Fprintf(out, "Claim:\t%s\n", pv.Spec.ClaimRef.Namespace+"/"+pv.Spec.ClaimRef.Name)
} else {
fmt.Fprintf(out, "Claim:\t%s\n", "")
}
fmt.Fprintf(out, "Reclaim Policy:\t%v\n", pv.Spec.PersistentVolumeReclaimPolicy)
fmt.Fprintf(out, "Access Modes:\t%s\n", api.GetAccessModesAsString(pv.Spec.AccessModes))
fmt.Fprintf(out, "Capacity:\t%s\n", storage.String())
fmt.Fprintf(out, "Message:\t%s\n", pv.Status.Message)
fmt.Fprintf(out, "Source:\n")
switch {
case pv.Spec.HostPath != nil:
printHostPathVolumeSource(pv.Spec.HostPath, out)
case pv.Spec.GCEPersistentDisk != nil:
printGCEPersistentDiskVolumeSource(pv.Spec.GCEPersistentDisk, out)
case pv.Spec.AWSElasticBlockStore != nil:
printAWSElasticBlockStoreVolumeSource(pv.Spec.AWSElasticBlockStore, out)
case pv.Spec.NFS != nil:
printNFSVolumeSource(pv.Spec.NFS, out)
case pv.Spec.ISCSI != nil:
printISCSIVolumeSource(pv.Spec.ISCSI, out)
case pv.Spec.Glusterfs != nil:
printGlusterfsVolumeSource(pv.Spec.Glusterfs, out)
case pv.Spec.RBD != nil:
printRBDVolumeSource(pv.Spec.RBD, out)
case pv.Spec.Quobyte != nil:
printQuobyteVolumeSource(pv.Spec.Quobyte, out)
}
if events != nil {
DescribeEvents(events, out)
}
return nil
})
}
type PersistentVolumeClaimDescriber struct {
client.Interface
}
func (d *PersistentVolumeClaimDescriber) Describe(namespace, name string, describerSettings DescriberSettings) (string, error) {
c := d.PersistentVolumeClaims(namespace)
pvc, err := c.Get(name)
if err != nil {
return "", err
}
storage := pvc.Spec.Resources.Requests[api.ResourceStorage]
capacity := ""
accessModes := ""
if pvc.Spec.VolumeName != "" {
accessModes = api.GetAccessModesAsString(pvc.Status.AccessModes)
storage = pvc.Status.Capacity[api.ResourceStorage]
capacity = storage.String()
}
events, _ := d.Events(namespace).Search(pvc)
return tabbedString(func(out io.Writer) error {
fmt.Fprintf(out, "Name:\t%s\n", pvc.Name)
fmt.Fprintf(out, "Namespace:\t%s\n", pvc.Namespace)
fmt.Fprintf(out, "Status:\t%v\n", pvc.Status.Phase)
fmt.Fprintf(out, "Volume:\t%s\n", pvc.Spec.VolumeName)
printLabelsMultiline(out, "Labels", pvc.Labels)
fmt.Fprintf(out, "Capacity:\t%s\n", capacity)
fmt.Fprintf(out, "Access Modes:\t%s\n", accessModes)
if events != nil {
DescribeEvents(events, out)
}
return nil
})
}
// TODO: Do a better job at indenting, maybe by using a prefix writer
func describeContainers(label string, containers []api.Container, containerStatuses []api.ContainerStatus, resolverFn EnvVarResolverFunc, out io.Writer, space string) {
statuses := map[string]api.ContainerStatus{}
for _, status := range containerStatuses {
statuses[status.Name] = status
}
if len(containers) == 0 {
fmt.Fprintf(out, "%s%s: <none>\n", space, label)
} else {
fmt.Fprintf(out, "%s%s:\n", space, label)
}
for _, container := range containers {
status, ok := statuses[container.Name]
nameIndent := ""
if len(space) > 0 {
nameIndent = " "
}
fmt.Fprintf(out, " %s%v:\n", nameIndent, container.Name)
if ok {
fmt.Fprintf(out, " Container ID:\t%s\n", status.ContainerID)
}
fmt.Fprintf(out, " Image:\t%s\n", container.Image)
if ok {
fmt.Fprintf(out, " Image ID:\t%s\n", status.ImageID)
}
portString := describeContainerPorts(container.Ports)
if strings.Contains(portString, ",") {
fmt.Fprintf(out, " Ports:\t%s\n", portString)
} else {
fmt.Fprintf(out, " Port:\t%s\n", portString)
}
if len(container.Command) > 0 {
fmt.Fprintf(out, " Command:\n")
for _, c := range container.Command {
fmt.Fprintf(out, " %s\n", c)
}
}
if len(container.Args) > 0 {
fmt.Fprintf(out, " Args:\n")
for _, arg := range container.Args {
fmt.Fprintf(out, " %s\n", arg)
}
}
resources := container.Resources
if len(resources.Limits) > 0 {
fmt.Fprintf(out, " Limits:\n")
}
for _, name := range SortedResourceNames(resources.Limits) {
quantity := resources.Limits[name]
fmt.Fprintf(out, " %s:\t%s\n", name, quantity.String())
}
if len(resources.Requests) > 0 {
fmt.Fprintf(out, " Requests:\n")
}
for _, name := range SortedResourceNames(resources.Requests) {
quantity := resources.Requests[name]
fmt.Fprintf(out, " %s:\t%s\n", name, quantity.String())
}
if ok {
describeStatus("State", status.State, out)
if status.LastTerminationState.Terminated != nil {
describeStatus("Last State", status.LastTerminationState, out)
}
fmt.Fprintf(out, " Ready:\t%v\n", printBool(status.Ready))
fmt.Fprintf(out, " Restart Count:\t%d\n", status.RestartCount)
}
if container.LivenessProbe != nil {
probe := DescribeProbe(container.LivenessProbe)
fmt.Fprintf(out, " Liveness:\t%s\n", probe)
}
if container.ReadinessProbe != nil {
probe := DescribeProbe(container.ReadinessProbe)
fmt.Fprintf(out, " Readiness:\t%s\n", probe)
}
none := ""
if len(container.VolumeMounts) == 0 {
none = "\t<none>"
}
fmt.Fprintf(out, " Volume Mounts:%s\n", none)
sort.Sort(SortableVolumeMounts(container.VolumeMounts))
for _, mount := range container.VolumeMounts {
flags := []string{}
switch {
case mount.ReadOnly:
flags = append(flags, "ro")
case !mount.ReadOnly:
flags = append(flags, "rw")
case len(mount.SubPath) > 0:
flags = append(flags, fmt.Sprintf("path=%q", mount.SubPath))
}
fmt.Fprintf(out, " %s from %s (%s)\n", mount.MountPath, mount.Name, strings.Join(flags, ","))
}
none = ""
if len(container.Env) == 0 {
none = "\t<none>"
}
fmt.Fprintf(out, " Environment Variables:%s\n", none)
for _, e := range container.Env {
if e.ValueFrom == nil {
fmt.Fprintf(out, " %s:\t%s\n", e.Name, e.Value)
continue
}
switch {
case e.ValueFrom.FieldRef != nil:
var valueFrom string
if resolverFn != nil {
valueFrom = resolverFn(e)
}
fmt.Fprintf(out, " %s:\t%s (%s:%s)\n", e.Name, valueFrom, e.ValueFrom.FieldRef.APIVersion, e.ValueFrom.FieldRef.FieldPath)
case e.ValueFrom.ResourceFieldRef != nil:
valueFrom, err := fieldpath.ExtractContainerResourceValue(e.ValueFrom.ResourceFieldRef, &container)
if err != nil {
valueFrom = ""
}
resource := e.ValueFrom.ResourceFieldRef.Resource
if valueFrom == "0" && (resource == "limits.cpu" || resource == "limits.memory") {
valueFrom = "node allocatable"
}
fmt.Fprintf(out, " %s:\t%s (%s)\n", e.Name, valueFrom, resource)
case e.ValueFrom.SecretKeyRef != nil:
fmt.Fprintf(out, " %s:\t<set to the key '%s' in secret '%s'>\n", e.Name, e.ValueFrom.SecretKeyRef.Key, e.ValueFrom.SecretKeyRef.Name)
case e.ValueFrom.ConfigMapKeyRef != nil:
fmt.Fprintf(out, " %s:\t<set to the key '%s' of config map '%s'>\n", e.Name, e.ValueFrom.ConfigMapKeyRef.Key, e.ValueFrom.ConfigMapKeyRef.Name)
}
}
}
}
func describeContainerPorts(cPorts []api.ContainerPort) string {
ports := make([]string, 0, len(cPorts))
for _, cPort := range cPorts {
ports = append(ports, fmt.Sprintf("%d/%s", cPort.ContainerPort, cPort.Protocol))
}
return strings.Join(ports, ", ")
}
// DescribeProbe is exported for consumers in other API groups that have probes
func DescribeProbe(probe *api.Probe) string {
attrs := fmt.Sprintf("delay=%ds timeout=%ds period=%ds #success=%d #failure=%d", probe.InitialDelaySeconds, probe.TimeoutSeconds, probe.PeriodSeconds, probe.SuccessThreshold, probe.FailureThreshold)
switch {
case probe.Exec != nil:
return fmt.Sprintf("exec %v %s", probe.Exec.Command, attrs)
case probe.HTTPGet != nil:
url := &url.URL{}
url.Scheme = strings.ToLower(string(probe.HTTPGet.Scheme))
if len(probe.HTTPGet.Port.String()) > 0 {
url.Host = net.JoinHostPort(probe.HTTPGet.Host, probe.HTTPGet.Port.String())
} else {
url.Host = probe.HTTPGet.Host
}
url.Path = probe.HTTPGet.Path