ppaltmann/canary-deployments

minikube start --kubernetes-version=v1.23.1 --addons=ingress $(if [ $(uname) != "Linux" ]; then echo "--vm=true"; fi)
minikube tunnel

Deploy the product version 1.0 of our sample app app-a:

kubectl apply -f app-a-deployment.yaml

Deploy the canary version 2.0 of our sample app app-a:

kubectl apply -f app-a-deployment-canary.yaml

Let's check what we have provisioned:

kubectl get deployments -o wide
kubectl get pods -o wide --show-labels
kubectl get service -o wide
kubectl get ingress -o wide

To route requests based on the weight we configured for our canary (50%), run the following command a few times. Roughly 50% of our request should go to the canary:

curl -i http://127.0.0.1 -H "Host: local.example.com"

To make sure the request is always routed to the canary, add the http header "X-Canary: always":

curl -i http://127.0.0.1 -H "Host: local.example.com" -H "X-Canary: always"

To make sure the request is never routed to the canary, add the http header "X-Canary: never":

curl -i http://127.0.0.1 -H "Host: local.example.com" -H "X-Canary: never"

minikube stop