
容器編排工具 Kubernetes 提供了 kubectl
命令行工具來與 Kubernetes 叢集(Kubernetes Cluster)互動,用於管理 Pod、ReplicaSets、Deployment 與 Service 等 Kubernetes 物件(Kubernetes Object),比如創建資源、刪除資源,以及查詢資源狀態等。
在使用時,為了避免輸入的命令過長,部分的資源有其對應的縮寫(shortname)以方便快速輸入,比如以下的命令是等價的,都可以用於列出目前 Kubernetes 叢集中的 Service 資源:
$ kubectl get svc
$ kubectl get services
其中的 svc>
便是 service
的縮寫,這些在 Kubernetes 中所定義的資源縮寫,可以幫助我們在操作管理 Kubernetes 物件時使用更簡潔的命令。那麼如何獲取 kubectl
命令支援的資源及其縮寫清單呢?
只需要使用 kubectl api-resources
命令即可:
$ kubectl api-resources
NAME SHORTNAMES APIVERSION NAMESPACED KIND
bindings v1 true Binding
componentstatuses cs v1 false ComponentStatus
configmaps cm v1 true ConfigMap
endpoints ep v1 true Endpoints
events ev v1 true Event
limitranges limits v1 true LimitRange
namespaces ns v1 false Namespace
nodes no v1 false Node
persistentvolumeclaims pvc v1 true PersistentVolumeClaim
persistentvolumes pv v1 false PersistentVolume
pods po v1 true Pod
podtemplates v1 true PodTemplate
replicationcontrollers rc v1 true ReplicationController
resourcequotas quota v1 true ResourceQuota
secrets v1 true Secret
serviceaccounts sa v1 true ServiceAccount
services svc v1 true Service
mutatingwebhookconfigurations admissionregistration.k8s.io/v1 false MutatingWebhookConfiguration
validatingadmissionpolicies admissionregistration.k8s.io/v1 false ValidatingAdmissionPolicy
validatingadmissionpolicybindings admissionregistration.k8s.io/v1 false ValidatingAdmissionPolicyBinding
validatingwebhookconfigurations admissionregistration.k8s.io/v1 false ValidatingWebhookConfiguration
customresourcedefinitions crd,crds apiextensions.k8s.io/v1 false CustomResourceDefinition
apiservices apiregistration.k8s.io/v1 false APIService
controllerrevisions apps/v1 true ControllerRevision
daemonsets ds apps/v1 true DaemonSet
deployments deploy apps/v1 true Deployment
replicasets rs apps/v1 true ReplicaSet
statefulsets sts apps/v1 true StatefulSet
selfsubjectreviews authentication.k8s.io/v1 false SelfSubjectReview
tokenreviews authentication.k8s.io/v1 false TokenReview
localsubjectaccessreviews authorization.k8s.io/v1 true LocalSubjectAccessReview
selfsubjectaccessreviews authorization.k8s.io/v1 false SelfSubjectAccessReview
selfsubjectrulesreviews authorization.k8s.io/v1 false SelfSubjectRulesReview
subjectaccessreviews authorization.k8s.io/v1 false SubjectAccessReview
horizontalpodautoscalers hpa autoscaling/v2 true HorizontalPodAutoscaler
cronjobs cj batch/v1 true CronJob
jobs batch/v1 true Job
certificatesigningrequests csr certificates.k8s.io/v1 false CertificateSigningRequest
leases coordination.k8s.io/v1 true Lease
endpointslices discovery.k8s.io/v1 true EndpointSlice
events ev events.k8s.io/v1 true Event
flowschemas flowcontrol.apiserver.k8s.io/v1 false FlowSchema
prioritylevelconfigurations flowcontrol.apiserver.k8s.io/v1 false PriorityLevelConfiguration
helmchartconfigs helm.cattle.io/v1 true HelmChartConfig
helmcharts helm.cattle.io/v1 true HelmChart
addons k3s.cattle.io/v1 true Addon
etcdsnapshotfiles k3s.cattle.io/v1 false ETCDSnapshotFile
nodes metrics.k8s.io/v1beta1 false NodeMetrics
pods metrics.k8s.io/v1beta1 true PodMetrics
ingressclasses networking.k8s.io/v1 false IngressClass
ingresses ing networking.k8s.io/v1 true Ingress
networkpolicies netpol networking.k8s.io/v1 true NetworkPolicy
runtimeclasses node.k8s.io/v1 false RuntimeClass
poddisruptionbudgets pdb policy/v1 true PodDisruptionBudget
clusterrolebindings rbac.authorization.k8s.io/v1 false ClusterRoleBinding
clusterroles rbac.authorization.k8s.io/v1 false ClusterRole
rolebindings rbac.authorization.k8s.io/v1 true RoleBinding
roles rbac.authorization.k8s.io/v1 true Role
priorityclasses pc scheduling.k8s.io/v1 false PriorityClass
csidrivers storage.k8s.io/v1 false CSIDriver
csinodes storage.k8s.io/v1 false CSINode
csistoragecapacities storage.k8s.io/v1 true CSIStorageCapacity
storageclasses sc storage.k8s.io/v1 false StorageClass
volumeattachments storage.k8s.io/v1 false VolumeAttachment
ingressroutes traefik.containo.us/v1alpha1 true IngressRoute
ingressroutetcps traefik.containo.us/v1alpha1 true IngressRouteTCP
ingressrouteudps traefik.containo.us/v1alpha1 true IngressRouteUDP
middlewares traefik.containo.us/v1alpha1 true Middleware
middlewaretcps traefik.containo.us/v1alpha1 true MiddlewareTCP
serverstransports traefik.containo.us/v1alpha1 true ServersTransport
tlsoptions traefik.containo.us/v1alpha1 true TLSOption
tlsstores traefik.containo.us/v1alpha1 true TLSStore
traefikservices traefik.containo.us/v1alpha1 true TraefikService
ingressroutes traefik.io/v1alpha1 true IngressRoute
ingressroutetcps traefik.io/v1alpha1 true IngressRouteTCP
ingressrouteudps traefik.io/v1alpha1 true IngressRouteUDP
middlewares traefik.io/v1alpha1 true Middleware
middlewaretcps traefik.io/v1alpha1 true MiddlewareTCP
serverstransports traefik.io/v1alpha1 true ServersTransport
serverstransporttcps traefik.io/v1alpha1 true ServersTransportTCP
tlsoptions traefik.io/v1alpha1 true TLSOption
tlsstores traefik.io/v1alpha1 true TLSStore
traefikservices traefik.io/v1alpha1 true TraefikService
其中比較常見的資源都有給出縮寫,比如 po
對應 pods
資源、rs
對應 replicasets
資源、svc
對應 services
資源、ing
對應 ingresses
資源等。
當然,並不是所有的資源都有官方的縮寫;而且 Kubernetes 本身也沒有提供自定義資源縮寫的功能;如果要自定義縮寫,筆者一般會在
.bashrc
或 .zshrc
中透過額外定義 Shell Alias 的方式來實現。
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