Service mesh example

This repository tries to provide a bootstrap example of a service mesh using Istio

We have recorded some screencast presenting this project. Check it out!

Enabled services:

Features

• Load balancing
• Circuit breaker
• TLS connection
• Service discovery
• Traffic management
• External call monitoring
• GRPC load balancing
• Custom logging
• Authentication
• Fault injection
• Traceability
• Observability

Telemetry

• Grafana
• Kiali
• Jaeger

---

How to use

• Install Minikube
• Install istio
• Setup Istio with MiniKube
• kubectl apply -f ./

Getting the url to access the system

export INGRESS_HOST=$(minikube ip)
export INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].nodePort}')
export GATEWAY=$INGRESS_HOST:$INGRESS_PORT
echo $GATEWAY

Visit the address printed on the Browser

Monitoring

• istioctl dashboard kiali
• istioctl dashboard grafana
• istioctl dashboard jaeger

Checking Circuit break

Running the command below you will see 3 request failed then the circuit will open to the sick pod and no errors will appear anymore

while true; do curl $GATEWAY/api/vehicles/driver/City%20Truck; echo; done;

Checking Load balancing

Running the command below you will see the logs from the call result from different hostname:

kubectl logs -l app=greeter-client -c greeter-client -f

Checking custom logging

Running the command below you will see the logs printed:

kubectl logs -n istio-system -l istio-mixer-type=telemetry -c mixer | grep "newlog"

Authorization

When enabled the JWT Authentication we need to set the JWT token to our request header

Add to your request the Authorization with the token below

Bearer eyJhbGciOiJSUzI1NiIsImtpZCI6IkRIRmJwb0lVcXJZOHQyenBBMnFYZkNtcjVWTzVaRXI0UnpIVV8tZW52dlEiLCJ0eXAiOiJKV1QifQ.eyJleHAiOjQ2ODU5ODk3MDAsImZvbyI6ImJhciIsImlhdCI6MTUzMjM4OTcwMCwiaXNzIjoidGVzdGluZ0BzZWN1cmUuaXN0aW8uaW8iLCJzdWIiOiJ0ZXN0aW5nQHNlY3VyZS5pc3Rpby5pbyJ9.CfNnxWP2tcnR9q0vxyxweaF3ovQYHYZl82hAUsn21bwQd9zP7c-LS9qd_vpdLG4Tn1A15NxfCjp5f7QNBUo-KC9PJqYpgGbaXhaGx7bEdFWjcwv3nZzvc7M__ZpaCERdwU7igUmJqYGBYQ51vr2njU9ZimyKkfDe3axcyiBZde7G6dabliUosJvvKOPcKIWPccCgefSj_GNfwIip3-SsFdlR7BtbVUcqR-yv-XOxJ3Uc1MI0tz3uMiiZcyPV7sNCU4KRnemRIMHVOfuvHsU60_GhGbiSFzgPTAa9WTltbnarTbxudb_YEOx12JiwYToeX0DCPb43W1tzIBxgm8NxUg

Cleanup

• Delete the cluster kubectl delete -f ./

That's all. Leave a star if it helped you!