部署无状态应用程序及升级

部署无状态应用程序及升级

deployment-1-14-2.yaml

version: 1.14.2

apiVersion: apps/v1kind: Deploymentmetadata: name: nginx-deploymentspec: selector: matchLabels: app: nginx replicas: 2 # tells deployment to run 2 pods matching the template template: metadata: labels: app: nginx spec: containers: - name: nginx image: nginx:1.14.2 ports: - containerPort: 80

创建deployment

kubectl apply -f deployment-1-14-2.yamlkubectl get podkubectl get deploymentkubectl get pods -l app=nginx

查看deployment信息

kubectl describe deployment nginx-deployment

升级nginx

deployment-1-16-1.yaml

apiVersion: apps/v1kind: Deploymentmetadata: name: nginx-deploymentspec: selector: matchLabels: app: nginx replicas: 2 template: metadata: labels: app: nginx spec: containers: - name: nginx image: nginx:1.16.1 # Update the version of nginx from 1.14.2 to 1.16.1 ports: - containerPort: 80

执行

kubectl apply -f deployment-1-16-1.yaml

扩容

2 to 4

deployment-1-16-1.yaml

apiVersion: apps/v1kind: Deploymentmetadata: name: nginx-deploymentspec: selector: matchLabels: app: nginx replicas: 4 # 2 to 4 template: metadata: labels: app: nginx spec: containers: - name: nginx image: nginx:1.16.1 ports: - containerPort: 80

执行

kubectl apply -f deployment-1-16-1.yaml

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