devops►kubernetes

Kubernetes Deploy Example - Part 2

This is part 2 of Kubernetes Deploy Example, in this example, we will use the yaml file to deploy a nginx.

In this example, we have combined the Deployment part and the Service part together. We could deploy them at the same time.

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apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2 
kind: Deployment 
metadata: 
  name: nginx-deployment 
spec: 
  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:latest 
        ports: 
        - containerPort: 80 
--- 
# https://kubernetes.io/docs/concepts/services-networking/service/#defining-a-service  
kind: Service 
apiVersion: v1 
metadata: 
  name: nginx-service 
spec: 
  selector: 
    app: nginx 
  ports: 
  - protocol: TCP 
    port: 80 
    targetPort: 80 
    nodePort: 32000 
  type: NodePort

Step 1: Apply applications with yaml file

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kubectl apply -f ./deployment.yaml
deployment.apps "nginx-deployment" created
service "nginx-service" created

Step 2: Get kubernetes ip

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kubectl get endpoints kubernetes

NAME         ENDPOINTS             AGE
kubernetes   192.168.99.100:8443   143d

Step 3: Access to nginx

Open your navigator and type the url of kubernetes with the port of nginx(we defined 32000 in the yaml file), you will access to welcome page of nginx

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http://192.168.99.100:32000