Keptn — Multi-stage delivery with Quality Gates(Demo)-Part 4

This is the continuation of “Get started with Keptn — Multi-stage delivery with Quality Gates(Demo)”. This is Configuration Step 3/3.

The next step is to configure Istio. We will need Istio for traffic routing and as ingress to our cluster. Keptn has prepared a script to ease out this process. We will configure Istio using that script and will also look at what the script is doing behind the scene.

1. Linux

curl -o configure-istio.sh https://raw.githubusercontent.com/keptn/examples/release-0.9.0/istio-configuration/configure-istio.sh
chmod +x configure-istio.sh
./configure-istio.sh

2. Windows

Windows users have to manually run this downloaded script. Your machine should have git bash installed.

curl -o configure-istio.sh https://raw.githubusercontent.com/keptn/examples/release-0.9.0/istio-configuration/configure-istio.sh

Running the script will configure the following:-

It will create an Ingress based on the following manifest.

---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  annotations:
    kubernetes.io/ingress.class: istio
  name: api-keptn-ingress
  namespace: keptn
spec:
  rules:
  - host: <IP-ADDRESS>.nip.io
    http:
      paths:
      - backend:
          serviceName: api-gateway-nginx
          servicePort: 80

It will create an Ingress based on the following manifest.

---
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: public-gateway
  namespace: istio-system
spec:
  selector:
    istio: ingressgateway
  servers:
  - port:
      name: http
      number: 80
      protocol: HTTP
    hosts:
    - '*'

Finally, the script restarts the helm-service pod of Keptn to fetch this new configuration.

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