1 查看资源简写
k8s很多资源是可以简写的，简写当然方便很多了，有哪些简写呢？
kubectl api-resources查看，SHORTNAMES就是简写

[root@nginx ~]# 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/v1beta1                     true         CronJob
jobs                                           batch/v1                          true         Job
certificatesigningrequests        csr          certificates.k8s.io/v1beta1       false        CertificateSigningRequest
leases                                         coordination.k8s.io/v1            true         Lease
bgpconfigurations                              crd.projectcalico.org/v1          false        BGPConfiguration
bgppeers                                       crd.projectcalico.org/v1          false        BGPPeer
blockaffinities                                crd.projectcalico.org/v1          false        BlockAffinity
clusterinformations                            crd.projectcalico.org/v1          false        ClusterInformation
felixconfigurations                            crd.projectcalico.org/v1          false        FelixConfiguration
globalnetworkpolicies                          crd.projectcalico.org/v1          false        GlobalNetworkPolicy
globalnetworksets                              crd.projectcalico.org/v1          false        GlobalNetworkSet
hostendpoints                                  crd.projectcalico.org/v1          false        HostEndpoint
ipamblocks                                     crd.projectcalico.org/v1          false        IPAMBlock
ipamconfigs                                    crd.projectcalico.org/v1          false        IPAMConfig
ipamhandles                                    crd.projectcalico.org/v1          false        IPAMHandle
ippools                                        crd.projectcalico.org/v1          false        IPPool
networkpolicies                                crd.projectcalico.org/v1          true         NetworkPolicy
networksets                                    crd.projectcalico.org/v1          true         NetworkSet
endpointslices                                 discovery.k8s.io/v1beta1          true         EndpointSlice
events                            ev           events.k8s.io/v1beta1             true         Event
ingresses                         ing          extensions/v1beta1                true         Ingress
nodes                                          metrics.k8s.io/v1beta1            false        NodeMetrics
pods                                           metrics.k8s.io/v1beta1            true         PodMetrics
ingresses                         ing          networking.k8s.io/v1beta1         true         Ingress
networkpolicies                   netpol       networking.k8s.io/v1              true         NetworkPolicy
runtimeclasses                                 node.k8s.io/v1beta1               false        RuntimeClass
poddisruptionbudgets              pdb          policy/v1beta1                    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/v1beta1            false        CSIDriver
csinodes                                       storage.k8s.io/v1                 false        CSINode
storageclasses                    sc           storage.k8s.io/v1                 false        StorageClass
volumeattachments                              storage.k8s.io/v1                 false        VolumeAttachment

2 kubectl 配置别名
使用最多的是kubectl， 可以给kubectl配置一个别名让使用简单一些 。
只需要将alias ku=kubectl 追加到 ~/.bashrc

cat  >>   ~/.bashrc   <<  EOF
alias ku=kubectl
EOF
source ~/.bashrc

测试

[root@nginx ~]# ku get po 
NAME                                READY   STATUS    RESTARTS   AGE
nginx-deployment-5c559d5697-5msrj   1/1     Running   1          5d22h
nginx-deployment-5c559d5697-767cg   1/1     Running   1          5d22h

3 命令行补齐
tab命令行补全需要 bashcompletetion包

# yum install -y bash-completion -y

chmod +x /usr/share/bash-completion/bash_completion
/usr/share/bash-completion/bash_completion
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)

这时补全已经可以用了， kubectl desc<tab> 。不过存在问题，在使用命令行补齐时，必须使用kubectl的全称，使用别名不行。
解决：

source <(kubectl completion bash | sed s/kubectl/ku/g)
ku desc<TAB> 

为了每次登录，都可以自动加载：

echo "source <(kubectl completion bash)" >> /etc/bashrc