1、查看版本信息：kubectl?version
[root@master ~]# kubectl version
[root@master ~]# kubectl version
Client Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.3", GitCommit:"ca643a4d1f7bfe34773c74f79527be4afd95bf39", GitTreeState:"clean", BuildDate:"2021-07-15T21:04:39Z", GoVersion:"go1.16.6", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.3", GitCommit:"ca643a4d1f7bfe34773c74f79527be4afd95bf39", GitTreeState:"clean", BuildDate:"2021-07-15T20:59:07Z", GoVersion:"go1.16.6", Compiler:"gc", Platform:"linux/amd64"}
[root@master ~]# kubectl
2、查看資源對象簡寫（縮寫）：kubectl api-resources
[root@master ~]# kubectl api-resources
Client Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.3", GitCommit:"ca643a4d1f7bfe34773c74f79527be4afd95bf39", GitTreeState:"clean", BuildDate:"2021-07-15T21:04:39Z", GoVersion:"go1.16.6", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.3", GitCommit:"ca643a4d1f7bfe34773c74f79527be4afd95bf39", GitTreeState:"clean", BuildDate:"2021-07-15T20:59:07Z", GoVersion:"go1.16.6", Compiler:"gc", Platform:"linux/amd64"}
3、查看集群信息：kubectl cluster-info
[root@master ~]# kubectl cluster-info
Kubernetes control plane is running at https://192.168.159.10:6443
CoreDNS is running at https://192.168.159.10:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
4、查看幫助信息：kubectl --help
[root@master ~]# kubectl –help
kubectl controls the Kubernetes cluster manager.
?Find more information at: https://kubernetes.io/docs/reference/kubectl/overview/
Basic Commands (Beginner):
? create??????? Create a resource from a file or from stdin.
? expose??????? 使用 replication controller, service, deployment 或者 pod 并暴露它作為一個 新的 Kubernetes
Service
? run?????????? 在集群中運行一個指定的鏡像
? set?????????? 為 objects 設置一個指定的特征
Basic Commands (Intermediate):
? explain?????? 查看資源的文檔
? get?????????? 顯示一個或更多 resources
? edit????????? 在服務器上編輯一個資源
? delete??????? Delete resources by filenames, stdin, resources and names, or by resources and label selector
Deploy Commands:
? rollout?????? Manage the rollout of a resource
? scale???????? Set a new size for a Deployment, ReplicaSet or Replication Controller
? autoscale???? Auto-scale a Deployment, ReplicaSet, StatefulSet, or ReplicationController
Cluster Management Commands:
? certificate?? 修改 certificate 資源.
? cluster-info? 顯示集群信息
? top?????????? 顯示 Resource (CPU/Memory) 使用.
? cordon??????? 標記 node 為 unschedulable
? uncordon????? 標記 node 為 schedulable
? drain???????? Drain node in preparation for maintenance
? taint???????? 更新一個或者多個 node 上的 taints
Troubleshooting and Debugging Commands:
? describe????? 顯示一個指定 resource 或者 group 的 resources 詳情
? logs????????? 輸出容器在 pod 中的日志
? attach??????? Attach 到一個運行中的 container
? exec????????? 在一個 container 中執(zhí)行一個命令
? port-forward? Forward one or more local ports to a pod
? proxy???????? 運行一個 proxy 到 Kubernetes API server
? cp??????????? 復制 files 和 directories 到 containers 和從容器中復制 files 和 directories.
? auth????????? Inspect authorization
? debug???????? Create debugging sessions for troubleshooting workloads and nodes
Advanced Commands:
? diff????????? Diff live version against would-be applied version
? apply???????? 通過文件名或標準輸入流(stdin)對資源進行配置
? patch???????? Update field(s) of a resource
? replace?????? 通過 filename 或者 stdin替換一個資源
? wait????????? Experimental: Wait for a specific condition on one or many resources.
? kustomize???? Build a kustomization target from a directory or URL.
[root@master ~]# 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
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
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/v1???????????????????????? 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
ingresses???????????????????????? ing????????? extensions/v1beta1???????????????????? true???????? Ingress
flowschemas????????????? ??????????????????????flowcontrol.apiserver.k8s.io/v1beta1?? false??????? FlowSchema
prioritylevelconfigurations??????????????????? flowcontrol.apiserver.k8s.io/v1beta1?? false??????? PriorityLevelConfiguration
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
podsecuritypolicies?????????????? psp????????? policy/v1beta1???????????????????????? false??????? PodSecurityPolicy
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/v1beta1???????????????? true???????? CSIStorageCapacity
storageclasses??????????????????? sc?????????? storage.k8s.io/v1????????????????????? false??????? StorageClass
volumeattachments????????????????????????????? storage.k8s.io/v1????????????????????? false??????? VolumeAttachmentSettings Commands:
? label???????? 更新在這個資源上的 labels
? annotate????? 更新一個資源的注解
? completion??? Output shell completion code for the specified shell (bash or zsh)
Other Commands:
? api-resources Print the supported API resources on the server
? api-versions? Print the supported API versions on the server, in the form of "group/version"
? config??????? 修改 kubeconfig 文件
? plugin??????? Provides utilities for interacting with plugins.
? version?????? 輸出 client 和 server 的版本信息
Usage:
? kubectl [flags] [options]
Use "kubectl <command> --help" for more information about a given command.
Use "kubectl options" for a list of global command-line options (applies to all commands).
5、node節(jié)點日志查看：journalctl?-u kubelet -f
k8s中查看核心組件日志怎么看
①、通過kubeadm部署的：kubectl logs -f pod_組件名 -n namespace
???????????????????????????????????????????? 或者 journalctl -u kubelet -f
②、二進制部署的：journalctl -u kubelet -f
-- Logs begin at 三 2022-11-02 02:24:50 CST. --
11月 01 19:51:04 master kubelet[13641]: I1101 19:51:04.415651?? 13641 pod_container_deletor.go:79] "Container not found in pod's containers" containerID="041b38b5bb2ff0161170bea161fd70e9175cc27fdc98877944d899ebe7b90d2f"
11月 01 19:51:06 master kubelet[13641]: I1101 19:51:06.428325?? 13641 reconciler.go:196] "operationExecutor.UnmountVolume started for volume \"kubeconfig\" (UniqueName: \"kubernetes.io/host-path/771ef2517500c43b40e7df4c76198cac-kubeconfig\") pod \"771ef2517500c43b40e7df4c76198cac\" (UID: \"771ef2517500c43b40e7df4c76198cac\") "
11月 01 19:51:06 master kubelet[13641]: I1101 19:51:06.428370?? 13641 operation_generator.go:829] UnmountVolume.TearDown succeeded for volume "kubernetes.io/host-path/771ef2517500c43b40e7df4c76198cac-kubeconfig" (OuterVolumeSpecName: "kubeconfig") pod "771ef2517500c43b40e7df4c76198cac" (UID: "771ef2517500c43b40e7df4c76198cac"). InnerVolumeSpecName "kubeconfig". PluginName "kubernetes.io/host-path", VolumeGidValue ""
11月 01 19:51:06 master kubelet[13641]: I1101 19:51:06.529163?? 13641 reconciler.go:319] "Volume detached for volume \"kubeconfig\" (UniqueName: \"kubernetes.io/host-path/771ef2517500c43b40e7df4c76198cac-kubeconfig\") on node \"master\" DevicePath \"\""
11月 01 19:51:07 master kubelet[13641]: I1101 19:51:07.282148?? 13641 kubelet_getters.go:300] "Path does not exist" path="/var/lib/kubelet/pods/771ef2517500c43b40e7df4c76198cac/volumes"
11月 01 19:51:10 master kubelet[13641]: I1101 19:51:10.913108?? 13641 topology_manager.go:187] "Topology Admit Handler"
11月 01 19:51:11 master kubelet[13641]: I1101 19:51:11.079185?? 13641 reconciler.go:224] "operationExecutor.VerifyControllerAttachedVolume started for volume \"kubeconfig\" (UniqueName: \"kubernetes.io/host-path/5e72c0f5a18f84d50f027106c98ab6b1-kubeconfig\") pod \"kube-scheduler-master\" (UID: \"5e72c0f5a18f84d50f027106c98ab6b1\") "
11月 01 19:51:15 master kubelet[13641]: E1101 19:51:15.849398?? 13641 cadvisor_stats_provider.go:151] "Unable to fetch pod etc hosts stats" err="failed to get stats failed command 'du' ($ nice -n 19 du -x -s -B 1) on path /var/lib/kubelet/pods/771ef2517500c43b40e7df4c76198cac/etc-hosts with error exit status 1" pod="kube-system/kube-scheduler-master"
11月 01 19:51:25 master kubelet[13641]: E1101 19:51:25.874999?? 13641 cadvisor_stats_provider.go:151] "Unable to fetch pod etc hosts stats" err="failed to get stats failed command 'du' ($ nice -n 19 du -x -s -B 1) on path /var/lib/kubelet/pods/771ef2517500c43b40e7df4c76198cac/etc-hosts with error exit status 1" pod="kube-system/kube-scheduler-master"
11月 01 19:51:31 master kubelet[13641]: I1101 19:51:31.
6、獲取一個或多個資源信息：kubectl get
語法格式：
kubectl get <resource> [-o wide | json| yaml] [-n namespace]
注釋：
resource：可以是具體資源名稱
-o ：指定輸出格式
-n ：指定名稱空間
6.1、查看所有命名空間運行的pod信息： kubectl get pods -A
[root@master ~]# kubectl get pods -A
NAMESPACE????? NAME???????????????????????????? READY?? STATUS??? RESTARTS?? AGE
kube-flannel?? kube-flannel-ds-7clld??????????? 1/1???? Running?? 0????????? 5h35m
kube-flannel?? kube-flannel-ds-psgvb??????????? 1/1???? Running?? 0????????? 5h35m
kube-flannel?? kube-flannel-ds-xxncr??????????? 1/1???? Running?? 0????????? 5h35m
kube-system??? coredns-6f6b8cc4f6-lbvl5???????? 1/1???? Running?? 0????????? 5h45m
kube-system??? coredns-6f6b8cc4f6-m6brz???????? 1/1???? Running?? 0????????? 5h45m
kube-system??? etcd-master????????????????????? 1/1???? Running?? 0????????? 5h45m
kube-system??? kube-apiserver-master??????????? 1/1???? Running?? 0????????? 5h45m
kube-system??? kube-controller-manager-master?? 1/1???? Running?? 0????????? 5h11m
kube-system??? kube-proxy-jwpnz???????????????? 1/1???? Running?? 0????????? 5h40m
kube-system??? kube-proxy-xqcqm???????????????? 1/1???? Running?? 0????????? 5h41m
kube-system??? kube-proxy-z6rhl???????????????? 1/1???? Running?? 0????????? 5h45m
kube-system??? kube-scheduler-master??????????? 1/1???? Running?? 0????????? 5h11m
6.2、查看所有命名空間運行的pod詳細信息： kubectl get pods -A -o wide
[root@master ~]# kubectl get pods -A -o wide
NAMESPACE????? NAME???????????????????????????? READY?? STATUS??? RESTARTS?? AGE???? IP?????????????? NODE???? NOMINATED NODE?? READINESS GATES
kube-flannel?? kube-flannel-ds-7clld??????????? 1/1???? Running?? 0????????? 5h39m?? 192.168.159.13?? node02?? <none>?????????? <none>
kube-flannel?? kube-flannel-ds-psgvb??????????? 1/1???? Running?? 0????????? 5h39m?? 192.168.159.11?? node01?? <none>?????????? <none>
kube-flannel?? kube-flannel-ds-xxncr??????????? 1/1???? Running?? 0????????? 5h39m?? 192.168.159.10?? master?? <none>?????????? <none>
kube-system??? coredns-6f6b8cc4f6-lbvl5???????? 1/1???? Running?? 0????????? 5h49m?? 10.150.2.2?????? node02?? <none>?????????? <none>
kube-system??? coredns-6f6b8cc4f6-m6brz???????? 1/1???? Running?? 0????????? 5h49m? ?10.150.1.2?????? node01?? <none>?????????? <none>
kube-system??? etcd-master????????????????????? 1/1???? Running?? 0????????? 5h49m?? 192.168.159.10?? master?? <none>?????????? <none>
kube-system??? kube-apiserver-master??????????? 1/1???? Running?? 0?? ???????5h49m?? 192.168.159.10?? master?? <none>?????????? <none>
kube-system??? kube-controller-manager-master?? 1/1???? Running?? 0????????? 5h16m?? 192.168.159.10?? master?? <none>?????????? <none>
kube-system??? kube-proxy-jwpnz???????????????? 1/1???? Running?? 0????????? 5h45m?? 192.168.159.13?? node02?? <none>?????????? <none>
kube-system??? kube-proxy-xqcqm???????????????? 1/1???? Running?? 0????????? 5h45m?? 192.168.159.11?? node01?? <none>?????????? <none>
kube-system??? kube-proxy-z6rhl?????????? ??????1/1???? Running?? 0????????? 5h49m?? 192.168.159.10?? master?? <none>?????????? <none>
kube-system??? kube-scheduler-master??????????? 1/1???? Running?? 0????????? 5h15m?? 192.168.159.10?? master?? <none>?????????? <none>
?文章來源地址http://www.zghlxwxcb.cn/news/detail-671820.html
6.3、 查看所有資源對象：kubectl get all -A
[root@master ~]# kubectl get all -A
NAMESPACE????? NAME???????????????????????????????? READY?? STATUS??? RESTARTS?? AGE
kube-flannel?? pod/kube-flannel-ds-7whbw??????????? 1/1???? Running?? 0????????? 5h14m
kube-flannel?? pod/kube-flannel-ds-nj4vl??????????? 1/1???? Running?? 0????????? 5h14m
kube-flannel?? pod/kube-flannel-ds-w55x5??????????? 1/1???? Running?? 0????????? 5h14m
kube-system??? pod/coredns-6f6b8cc4f6-lg6hc???????? 1/1???? Running?? 0????????? 5h20m
kube-system??? pod/coredns-6f6b8cc4f6-tdwhx???????? 1/1???? Running?? 0????????? 5h20m
kube-system??? pod/etcd-master????????????????????? 1/1???? Running?? 0????????? 5h20m
kube-system??? pod/kube-apiserver-master??????????? 1/1???? Running?? 0????????? 5h20m
kube-system??? pod/kube-controller-manager-master?? 1/1???? Running?? 0????????? 5h13m
kube-system??? pod/kube-proxy-gv58r???????????????? 1/1???? Running?? 0????????? 5h20m
kube-system??? pod/kube-proxy-xd4lz???????????????? 1/1???? Running?? 0????????? 5h18m
kube-system??? pod/kube-proxy-zzs2s???????????????? 1/1???? Running?? 0????????? 5h18m
kube-system??? pod/kube-scheduler-master??????????? 1/1???? Running?? 0????? ????5h12m
NAMESPACE???? NAME??????????????????? TYPE??????? CLUSTER-IP???? EXTERNAL-IP?? PORT(S)????????????????? AGE
default?????? service/kubernetes????? ClusterIP?? 10.125.0.1???? <none>??????? 443/TCP????????????????? 5h20m
default?????? service/nginx-service?? NodePort??? 10.125.18.84?? <none>??????? 80:32476/TCP???????????? 5h3m
kube-system?? service/kube-dns??????? ClusterIP?? 10.125.0.10??? <none>??????? 53/UDP,53/TCP,9153/TCP?? 5h20m
NAMESPACE????? NAME???????????????????????????? DESIRED?? CURRENT?? READY?? UP-TO-DATE?? AVAILABLE?? NODE SELECTOR??????????? AGE
kube-flannel?? daemonset.apps/kube-flannel-ds?? 3???????? 3???????? 3?????? 3??????????? 3?????????? <none>?????????????????? 5h14m
kube-system??? daemonset.apps/kube-proxy??????? 3????? ???3???????? 3?????? 3??????????? 3?????????? kubernetes.io/os=linux?? 5h20m
NAMESPACE???? NAME????????????????????? READY?? UP-TO-DATE?? AVAILABLE?? AGE
kube-system?? deployment.apps/coredns?? 2/2???? 2??????????? 2?????????? 5h20m
NAMESPACE???? NAME ????????????????????????????????DESIRED?? CURRENT?? READY?? AGE
kube-system?? replicaset.apps/coredns-6f6b8cc4f6?? 2???????? 2???????? 2?????? 5h20m
6.4、查看node節(jié)點上的標簽：kube get nodes --show-labels?
[root@master ~]# kubectl get nodes --show-labels
NAME???? STATUS?? ROLES????????????????? AGE???? VERSION?? LABELS
master?? Ready??? control-plane,master?? 5h58m?? v1.21.3?? beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
node01?? Ready??? node?????????????????? 5h53m?? v1.21.3?? beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=node01,kubernetes.io/os=linux,node-role.kubernetes.io/node=node
node02?? Ready??? node?????????????????? 5h53m?? v1.21.3?? beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=node02,kubernetes.io/os=linux,node-role.kubernetes.io/node=node
6.5、查看pod節(jié)點上的標簽：kubectl get pods --show-labels -A
[root@master ~]# kubectl get pods --show-labels -A
[root@master ~]# kubectl get pods --show-labels -A
NAMESPACE????? NAME???????????????????????????? READY?? STATUS??? RESTARTS?? AGE???? LABELS
kube-flannel?? kube-flannel-ds-7clld??????????? 1/1???? Running?? 0????????? 5h51m?? app=flannel,controller-revision-hash=5b775b5b5c,pod-template-generation=1,tier=node
kube-flannel?? kube-flannel-ds-psgvb??????????? 1/1???? Running?? 0????????? 5h51m?? app=flannel,controller-revision-hash=5b775b5b5c,pod-template-generation=1,tier=node
kube-flannel?? kube-flannel-ds-xxncr??????????? 1/1???? Running?? 0????????? 5h51m?? app=flannel,controller-revision-hash=5b775b5b5c,pod-template-generation=1,tier=node
kube-system??? coredns-6f6b8cc4f6-lbvl5???????? 1/1???? Running?? 0????????? 6h1m??? k8s-app=kube-dns,pod-template-hash=6f6b8cc4f6
kube-system??? coredns-6f6b8cc4f6-m6brz???????? 1/1???? Running?? 0????????? 6h1m??? k8s-app=kube-dns,pod-template-hash=6f6b8cc4f6
kube-system??? etcd-master????????????????????? 1/1???? Running?? 0????????? 6h1m??? component=etcd,tier=control-plane
kube-system??? kube-apiserver-master??????????? 1/1???? Running?? 0????????? 6h1m??? component=kube-apiserver,tier=control-plane
kube-system??? kube-controller-manager-master?? 1/1???? Running?? 0????????? 5h27m?? component=kube-controller-manager,tier=control-plane
kube-system??? kube-proxy-jwpnz???????????????? 1/1???? Running?? 0????????? 5h56m?? controller-revision-hash=6b87fcb57c,k8s-app=kube-proxy,pod-template-generation=1
kube-system??? kube-proxy-xqcqm???????????????? 1/1???? Running?? 0????????? 5h56m?? controller-revision-hash=6b87fcb57c,k8s-app=kube-proxy,pod-template-generation=1
kube-system??? kube-proxy-z6rhl???????????????? 1/1???? Running?? 0????????? 6h1m??? controller-revision-hash=6b87fcb57c,k8s-app=kube-proxy,pod-template-generation=1
kube-system??? kube-scheduler-master??????????? 1/1???? Running?? 0????????? 5h26m?? component=kube-scheduler,tier=control-plane
6.6、查看節(jié)點組件的狀態(tài)信息：kubectl get cs
[root@master ~]# kubectl get cs
Warning: v1 ComponentStatus is deprecated in v1.19+
NAME???????????????? STATUS??? MESSAGE???????????? ERROR
scheduler??????????? Healthy?? ok?????????????????
controller-manager?? Healthy?? ok?????????????????
etcd-0?????????????? Healthy?? {"health":"true"}?
6.7、查看命名空間：kubectl get namespaces
或者使用縮寫：[root@master ~]# kubectl get ns
[root@master ~]# kubectl? get namespace
NAME????????????? STATUS?? AGE
default? ?????????Active?? 6h8m
kube-flannel????? Active?? 5h58m
kube-node-lease?? Active?? 6h8m
kube-public?????? Active?? 6h8m
kube-system?????? Active?? 6h8m
7、創(chuàng)建命名空間 ：kubectl create ns app
[root@master ~]# kubectl create ns ceshi
namespace/ceshi created
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8、刪除命名空間：kubectl delete ns ceshi
[root@master ~]# kubectl delete ns ceshi
namespace "ceshi" deleted
9、在命名空間kube-public創(chuàng)建無狀態(tài)控制器deployment來啟動pod，暴露80端口，副本集為3
在kube-public命名空間創(chuàng)建一個nginx
[root@master ~]# kubectl create deployment nginx --image=nginx:1.15 --port=80 --replicas=3 -n kube-public
[root@master ~]# kubectl create deployment nginx --image=nginx:1.15 --port=80 --replicas=3 -n kube-public
deployment.apps/nginx created
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11、暴露發(fā)布pod中的服務供用戶訪問
[root@master ~]# kubectl expose deployment nginx --port=80 --target-port=80 --name=nginx-service --type=NodePort -n kube-public
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訪問：
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