istio-api-gateway

Contains YAML manifests that help manage API Gateway using Istio.

Table of content:

1. Pre-requisite
2. Base Setup
3. Scenario and use-cases

Pre-requisite

• Kubernetes Cluster
• Kubectl with updated context
• Istio demo profile setup on cluster

Base Setup

First, We will deploy sample application and the istio API gateway as part of the base setup.

Deploy Sample Application and Gateway

In this demo we are going to use echo-server container image for the sample application.

Deploy sample application backend-v1 and backend-v2:

kubectl apply -f backend-v1.yaml
kubectl apply -f backend-v2.yaml

Now, Let's deploy istio gateway.

kubectl apply -g gateway.yaml

Scenario and use-cases

Here, we will apply and test different scenarios and use-cases around api-gateway feature and functionalities.

Host based routing:

Apply use-case manifest:

kubectl apply -f host.yaml

Cleanup:

kubectl delete -f host.yaml

Path based routing:

Apply use-case manifest:

kubectl apply -f path.yaml

Cleanup:

kubectl delete -f path.yaml

Rate limit requests:

Apply use-case manifest:

kubectl apply -f path.yaml
kubectl apply -f rate-limit.yaml

Cleanup:

kubectl delete -f path.yaml
kubectl delete -f rate-limit.yaml

Weight (Percentage) based routing:

Apply use-case manifest:

kubectl apply -f weight.yaml

Cleanup:

kubectl delete -f weight.yaml

Authentication (JWT):

Apply use-case manifest:

kubectl apply -f path.yaml
kubectl apply -f auth.yaml

Cleanup:

kubectl delete -f path.yaml
kubectl delete -f auth.yaml

CORS policy with pre-flight:

Apply use-case manifest:

kubectl apply -f cors.yaml

Cleanup:

kubectl delete -f cors.yaml