cheatsheet.txt

# Traffic Split

## Create a new split service
kubectl apply -f webapp-split-svc.yml

## Update the ingress
kubectl apply -f books-split-ingress.yml

## Create the traffic split resource
kubectl apply -f traffic-split.yml

## Create the v4 Deployment and Service
kubectl apply -f web-svc-v4.yml

## Open the v4 service in the browser
open http://$(kubectl get svc webapp-v4 -n booksapp -ojsonpath={.status.loadBalancer.ingress[].ip}):7000

## Observe that the split service has no public endpoint

watch linkerd stat deploy -n booksapp webapp webapp-v4

kubectl log -f deploy/webapp -n booksapp -c service
kubectl log -f deploy/webapp-v4 -n booksapp -c service

# Update the endpoint that is called for traffic service: - "webapp-split:7000"
kubectl edit deploy/traffic -n booksapp

# Update the traffic weights
kubectl edit ts booksapp-rollout -n booksapp

# Debugging

## Tap
linkerd tap -n booksapp deploy/webapp -o wide

## Debug container
kubectl get deploy/books -n booksapp -oyaml | linkerd inject --enable-debug-sidecar - > books-debug.yml
kubectl apply -f books-debug.yml

kubectl logs -f deploy/books linkerd-debug