k8s集群命令用法

一、k8s集群管理方法

 

 

 

 

二、k8s集群命令用法

查看命名空间
~]# kubectl get namespace

~]# kubectl get ns

查看默认命名空间下所有资源
~]# kubectl get all [-n default]

创建命名空间
~]# kubectl create ns app

~]# kubectl delete namespace app

创建deployment类型的pod控制器
~]# kubectl create deployment nginx-dp --image=harbor.od.com/public/nginx:v1.7.9 -n kube-public

查看deployment类型的pod控制器
~]# kubectl get deploy -n kube-public

~]# kubectl get deployment -o wide -n kube-public

查看nginx-dp控制器的详细信息
~]# kubectl describe deployment nginx-dp -n kube-public

查看kube-public名称空间下的pod
~]# kubectl get pods -n kube-public

进入pod nginx-dp-5dfc689474-x5nhb资源
~]# kubectl exec -ti nginx-dp-5dfc689474-x5nhb /bin/bash -n kube-public

~]# kubectl delete pod nginx-dp-5dfc689474-gtfvv -n kube-public [--force --grace-period=0]

~]# kubectl delete deploy nginx-dp -n kube-public

暴露nginx-dp控制器80端口的service资源
~]# kubectl expose deployment nginx-dp --port=80 -n kube-public

复制nginx-dp控制器一份
~]# kubectl scale deployment nginx-dp --replicas=2 -n kube-public

~]# kubectl describe svc nginx-dp -n kube-public

http://docs.kubernetes.org.cn/683.html

将nginx-dp-5dfc689474-f2bvt pod以yaml格式在控制台输出
~]# kubectl get pods nginx-dp-5dfc689474-f2bvt -o yaml -n kube-public

查看service.metadata字段的帮助文档
~]# kubectl explain service.metadata

vi nginx-ds-svc.yaml
apiVersion: v1
kind: Service
metadata:
  labels:
    app: nginx-ds
  name: nginx-ds
  namespace: default
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
  selector:
    app: nginx-ds
  sessionAffinity: None
  type: ClusterIP

声明式创建service资源
~]# kubectl create -f nginx-ds-svc.yaml 

~]# kubectl delete svc nginx-ds

~]# kubectl delete -f nginx-dp-svc.yaml