部署Deployment

1.编写yaml文件

apiVersion: apps/v1
kind: Deployment
metadata:
  name: dev-nginx-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
	  app: dev-nginx-deployment
  template:
    metadata: 
	  labels:
	    app: dev-nginx-deployment
	spec:
      containers:
      - name: nginx
        image: nginx:1.19.5

2.应用yaml文件

kubectl apply -f dev-nginx.yml

3.查看deployment

kubectl get deployment

4.deployment扩缩容

kubectl scale --replicas=0 deployment/dev-nginx-deployment

5.创建Service

apiVersion: v1
kind: Service
metadata:
  name: nginx-svc
spec:
  selector:
    app: dev-nginx-deployment
  ports:
  - protocol: TCP
    port: 8080
    targetPort: 80 

注意事项(同部署单个pod)

1.查看pod部署详细信息

kubectl describe pod dev-nginx

2.查看pod部署简要信息

kubectl get pod -o wide

3.复制网络配置
如果run/flannel下没有subnet.env文件则需要从master复制该配置文件

scp -r subnet.env 192.168.221.129:/run/flannel/

4.手动下载镜像并打标

docker pull ggangelo/pause:3.2
docker pull ggangelo/kube-proxy:v1.19.4
docker tag ggangelo/pause:3.2 k8s.gcr.io/pause:3.2
docker tag ggangelo/kube-proxy:v1.19.4 k8s.gcr.io/kube-proxy:v1.19.4