kubectl get命令

通过kubectl get --help查看详细用法

一、命令格式

kubectl get resource名称

二、resource列表

• all
• certificatesigningrequests (aka ‘csr’)
• clusterrolebindings
• clusterrol
• componentstatuses (aka ‘cs’)
• configmaps (aka ‘cm’)
• controllerrevisions
• cronjobs
• customresourcedefinition (aka ‘crd’)
• daemonsets (aka ‘ds’)
• deployments (aka ‘deploy’)
• endpoints (aka ‘ep’)
• events (aka ‘ev’)
• horizontalpodautoscalers (aka ‘hpa’)
• ingresses (aka ‘ing’)
• jobs
• limitranges (aka ‘limits’)
• namespaces (aka ‘ns’)
• networkpolicies (aka ‘netpol’)
• nodes (aka ‘no’)
• persistentvolumeclaims (aka ‘pvc’)
• persistentvolumes (aka ‘pv’)
• poddisruptionbudgets (aka ‘pdb’)
• podpreset
• pods (aka ‘po’)
• podsecuritypolicies (aka ‘psp’)
• podtemplates
• replicasets (aka ‘rs’)
• replicationcontrollers (aka ‘rc’)
• resourcequotas (aka ‘quota’)
• rolebindings
• roles
• secrets
• serviceaccounts (aka ‘sa’)
• services (aka ‘svc’)
• statefulsets (aka ‘sts’)
• storageclasses (aka ‘sc’)

三、可选参数

用不同的格式查看
-o wide/yaml/json

查看指定的命名空间

-n 命名空间

四、 示例

kubectl get namespace
查看所有命名空间

$ kubectl get namespace
NAME          STATUS   AGE
admin         Active   7d
default       Active   7d1h
kube-public   Active   7d1h
kube-system   Active   7d1h
opcs          Active   7d
zenap         Active   3h48m

kubectl get componentstatuses
查看Master状态

$ kubectl get componentstatuses
NAME                 STATUS    MESSAGE              ERROR
controller-manager   Healthy   ok
scheduler            Healthy   ok
etcd-0               Healthy   {"health": "true"}
etcd-1               Healthy   {"health": "true"}
etcd-2               Healthy   {"health": "true"}

kubectl -n ns1 get pods
查找namespace为ns1的所有pod

kubectl -n ns1 get pods -o wide
NAME                                                            READY   STATUS    RESTARTS   AGE     IP              NODE                  NOMINATED NODE   READINESS GATES
apds-apds-design-1-4tmkn                                        2/2     Running   0          3h18m   172.30.2.176    6600-db8-0-f101--19   <none>           <none>

kubectl get -o wide pod pod1 -n ns1
获取名字为pod1的pod的信息,并指定namespace为ns1，并以wide格式输出

$ kubectl -n ns1 get  pods pod1  -o wide
NAME                       READY   STATUS    RESTARTS   AGE     IP              NODE                  NOMINATED NODE   READINESS GATES
pod1   1/1     Running   0          3h26m   100.100.0.117   6600-db8-0-f101--18   <none>           <none>

kubectl get rc,services -n zenap
同时获取所有的rc和service
rc是上文中replicationcontrollers的缩写

$ $ kubectl get rc,services -n zenap
NAME                                                                            DESIRED   CURRENT   READY   AGE
replicationcontroller/apds-apds-design-1                                        1         1         1       3h38m
replicationcontroller/backup-backup-iui-1                                       1         1         1       3h38m

kubectl get all -n zenap
获取所有resource

kubectl get all -n zenap
NAME                                                                READY   STATUS    RESTARTS   AGE
pod/apds-apds-design-1-4tmkn                                        2/2     Running   0          3h35m
pod/backup-backup-iui-1-hdkzv                                       1/1     Running   0          3h34m
...
NAME                                                                            DESIRED   CURRENT   READY   AGE
replicationcontroller/apds-apds-design-1                                        1         1         1       3h35m
replicationcontroller/backup-backup-iui-1                                       1         1         1       3h34m