Kubernetes Autostopping

This tutorial shows you how to create and test an AutoStopping rule for your Kubernetes cluster.

This tutorial explains how to create and test an AutoStopping rule for your Kubernetes cluster.

Install a sample application

To test AutoStopping, you can use a sample nginx application.

To install this sample application, apply the following YAML in your Kubernetes cluster. This installs a demo application named autostopping-sample-app that runs three pods running nginx in the autostopping-sample namespace.

apiVersion: v1
kind: Namespace
metadata:
  name: autostopping-sample

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: autostopping-sample-app
  namespace: autostopping-sample
  labels:
    app: autostopping-sample-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app: autostopping-sample-app
  template:
    metadata:
      labels:
        app: autostopping-sample-app
    spec:
      containers:
      - name: autostopping-sample-app
        image: nginx:1.14.2
        ports:
        - containerPort: 80

---

apiVersion: v1
kind: Service
metadata:
  name: autostopping-sample-svc
  namespace: autostopping-sample
spec:
  selector:
    app: autostopping-sample-app
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80

Supported ingress controllers for Kubernetes AutoStopping

Kubernetes AutoStopping support is fully available for the following ingress controllers and API gateways:

• Nginx

• Istio

• Traefik

• Ambassador

• HAProxy

Kubernetes AutoStopping for Nginx

1. You will need the following options set on your NGINX Ingress Controller:

allow-snippet-annotations: true
annotations-risk-level: Critical

1. Expose your application by creating an ingress rule. Apply the following YAML to the cluster.

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: autostopping-sample-ig
  namespace: autostopping-sample
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  ingressClassName: nginx
  rules:
  - http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: autostopping-sample-svc
            port:
              number: 80

1. Create an AutoStopping Rule. Before applying this YAML, make sure that the cloud-connector-id is updated and the namespace of the Rule is the same as the autostopping-sample-app application.

apiVersion: ccm.harness.io/v1
kind: AutoStoppingRule
metadata:
  name: autostopping-sample-rule
  namespace: autostopping-sample
  annotations:
      harness.io/cloud-connector-id: Lightwing_Non_Prod
spec:
    service:
        name: autostopping-sample-svc
        port: 80
    ingress:
        name: autostopping-sample-ig
        controllerName: nginx
    idleTimeMins: 5
    ahideProgressPage: false

Your sample application is now managed by an AutoStopping Rule called autostopping-sample-ru.

Kubernetes AutoStopping for Istio

1. Expose your application by creating an ingress rule.

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: httpbin
  namespace: autostopping-sample
spec:
  gateways:
  - http-gateway
  http:
  - match:
    - uri:
        prefix: /autostopping-test
    route:
    - destination:
        port:
          number: 80
        host: autostopping-sample-svc

1. Create an AutoStopping Rule. Before applying this YAML, make sure that the cloud-connector-id is updated and the namespace of the Rule is the same as the autostopping-sample-app application.

apiVersion: ccm.harness.io/v1
kind: AutoStoppingRule
metadata:
    name: autostopping-sample-rule
    namespace: autostopping-sample
    annotations:
        harness.io/cloud-connector-id: [CloudConnectorID]
spec:
    service:
        name: autostopping-sample-svc
        port: 80
    istio:
        virtualServices:
          - httpbin
    idleTimeMins: 5
    hideProgressPage: false

Your sample application is now managed by an AutoStopping Rule called autostopping-sample-rule.