Istio overview in Kubernetes - Mini Project: Build & Apply

Istio Overview with Kubernetes

📖 Scenario: You are working as a DevOps engineer managing microservices on Kubernetes. You want to use Istio to control and observe the traffic between your services easily.

🎯 Goal: Learn how to set up a basic Istio configuration on Kubernetes, define a simple service, and verify Istio is managing traffic.

📋 What You'll Learn

Create a Kubernetes namespace called istio-demo

Label the namespace for Istio automatic sidecar injection

Deploy a simple httpbin service in the istio-demo namespace

Verify the httpbin pod is running with the Istio sidecar container

Use kubectl commands to check the service and pod status

💡 Why This Matters

🌍 Real World

Istio helps manage microservices traffic securely and observably in Kubernetes clusters, making it easier to control communication and monitor services.

💼 Career

Understanding Istio setup and verification is essential for DevOps engineers working with Kubernetes service meshes to improve application reliability and security.

1

Create the Istio demo namespace

Create a Kubernetes namespace called istio-demo using kubectl.

Kubernetes

# Create the namespace istio-demo
# Your code here

Need a hint?

Use kubectl create namespace istio-demo to create the namespace.

2

Label the namespace for Istio sidecar injection

Label the istio-demo namespace with istio-injection=enabled to enable automatic Istio sidecar injection.

Kubernetes

kubectl create namespace istio-demo
# Label the namespace istio-demo for Istio sidecar injection
# Your code here

Need a hint?

Use kubectl label namespace istio-demo istio-injection=enabled.

3

Deploy the httpbin service in istio-demo namespace

Deploy the httpbin service in the istio-demo namespace using the official Istio sample YAML from https://raw.githubusercontent.com/istio/istio/release-1.18/samples/httpbin/httpbin.yaml.

Kubernetes

kubectl create namespace istio-demo
kubectl label namespace istio-demo istio-injection=enabled
# Deploy httpbin service in istio-demo namespace
# Your code here

Need a hint?

Use kubectl apply -n istio-demo -f [URL] to deploy the service.

4

Verify the httpbin pod has Istio sidecar and is running

Use kubectl get pods -n istio-demo to check the pod status and use kubectl describe pod httpbin- -n istio-demo to verify the Istio sidecar container named istio-proxy is injected.

Kubernetes

kubectl create namespace istio-demo
kubectl label namespace istio-demo istio-injection=enabled
kubectl apply -n istio-demo -f https://raw.githubusercontent.com/istio/istio/release-1.18/samples/httpbin/httpbin.yaml
# Check pods and describe httpbin pod to verify istio-proxy container
# Your code here

Need a hint?

Use kubectl get pods -n istio-demo and kubectl describe pod -n istio-demo -l app=httpbin to check the pod and containers.