1- run minikube, create a new namespace.
2- apply these configs in order:
echo/deployment.yaml
echo/service.yaml
traefik/static.yaml
traefik/dynamic.yaml
traefik/deployment.yaml
traefik/service.yaml
loadtest/deployment.yaml
3- check the (6) pods are all running
4- go inside loadtest pod:
kubectl exec -it <loadtest-pod> /bin/bash
5- there's a run.sh script there. it contains a loadtest sample with ghz.sh tool, which requests a thousand of gRPC calls that goes through traefik to call echo service. it uses multiple connections and concurrency.
6- check prometheus metrics in each of echo pods:
kubectl port-forward <each-echo-pod> 5000:50050
kubectl port-forward <each-echo-pod> 5001:50050
kubectl port-forward <each-echo-pod> 5002:50050
now go to localhost:5000 to 5002 and check request_total.
You'll see that all requests were made to one pod!
You can try and execute run.sh multiple times but the result stays the same!