14.验证集群状态

部署环境

IP地址	主机名	功能
10.1.104.200	k8s-deploy	部署节点，不承担实际作用
10.1.104.201	k8s-master01	master节点
10.1.104.202	k8s-master02	master节点
10.1.104.203	k8s-master03	master节点
10.1.104.204	k8s-nginx	负载均衡节点，实际生产中应为HA架构
10.1.104.205	k8s-node01	node节点
10.1.104.206	k8s-node02	node节点
10.1.104.207	k8s-node03	node节点

验证集群状态

本部署将使用Deloyment的方式部署一个3个副本的Nginx服务，并使用NodePort的方式对外提供服务。

确认组件、节点均正常工作（k8s-master）：

验证各组件状态：

kubectl get cs

验证各节点状态：

kubectl get node

部署Deployment资源（k8s-master）：

创建Deployment资源文件：

cd /opt/k8s/work
source /opt/k8s/bin/environment.sh

cat > nginx-prod.yaml << EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: daemon-nginx-deployment
  namespace: default
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      name: nginx-prod
      labels:
        app: nginx
        env: prod
    spec:
      containers:
      - name: daemon-nginx-pod
        image: nginx:1.14.2
        imagePullPolicy: Always
        ports:
        - name: http-80
          containerPort: 80
        resources:
          limits:
            cpu: 400m
            memory: 1024Mi
          requests:
            cpu: 100m
            memory: 256Mi
        readinessProbe:
          tcpSocket:
            port: 80
          initialDelaySeconds: 20
          periodSeconds: 10
        livenessProbe:
          tcpSocket:
            port: 80
          initialDelaySeconds: 20
          periodSeconds: 10
  strategy:
    type: RollingUpdate
    rollingUpdate: 
      maxSurge: 1

---

apiVersion: v1
kind: Service
metadata:
  name: daemon-nginx-service
spec:
  type: NodePort
  selector:
    app: nginx
  clusterIP: 10.254.8.8
  ports:
  - port: 8080
    targetPort: 80
    nodePort: 32666
EOF

查看创建的Deployment、service及pod资源：

kubectl apply -f nginx-prod.yaml
kubectl get all

访问任意Node节点的地址，检验应用是否能访问：

http://10.1.104.205:32666/