Internal / External Kubernetes Service Example

hello-deployment.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-world
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: hello-world
  template:
    metadata:
      labels:
        app: hello-world
    spec:
      containers:
        - name: app
          image: paulbouwer/hello-kubernetes:1.9
          ports:
            - name: web
              containerPort: 8080
              protocol: TCP

hello-svc-internal.yml

kind: Service
apiVersion: v1
metadata:
  name: hello-world-internal
  namespace: default
  annotations:
    service.beta.kubernetes.io/aws-load-balancer-internal: "true"
spec:
  type: LoadBalancer
  selector:
    app: hello-world
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: web

hello-svc.yml

kind: Service
apiVersion: v1
metadata:
  name: hello-world
  namespace: default
spec:
  type: LoadBalancer
  selector:
    app: hello-world
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: web

launch-deployment-on-specific-node.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: test
  labels:
    app: test
spec:
  replicas: 10
  selector:
    matchLabels:
      app: test
  template:
    metadata:
      labels:
        app: test
    spec:
      nodeSelector: 
        kubernetes.io/hostname: ip-10-0-172-177.us-west-2.compute.internal 
      containers:
      - name: test
        image: alpine
        command: ['sh', '-c', 'sleep 6666666']
        resources:
          requests:
            memory: 1Gi
          limits:
            memory: 20Gi

launch-pod-on-specific-node.yaml

---
apiVersion: v1
kind: Pod
metadata:
  name: testing
spec:
  nodeSelector: 
    kubernetes.io/hostname: ip-10-0-172-177.us-west-2.compute.internal 
  containers:
  - name: testing
    image: ubuntu
    command: ['sh', '-c', 'sleep infinity']

pdb.yml

apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: hello-world
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app: hello-world

tools.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: stefhen
spec:
  replicas: 1
  selector:
    matchLabels:
      app: stefhen
  template:
    metadata:
      labels:
        app: stefhen
    spec:
      containers:
        - name: ubuntu
          image: ubuntu
          lifecycle:
            postStart:
              exec:
                command: ["/bin/sh", "-c", "apt-get update -qq && apt-get install -y -qq curl wget httpie screen bind9-host"]
          command: ["/bin/sh", "-c", "sleep infinity"]