gistfile1.txt

# Step 1: Install Linkerd
# Step 2: Install Linkerd Viz (optional, but helpful for seeing what's going on)
# Step 3: Install Linkerd Jaeger
# Step 4: Install Nginx Ingress:

linkerd inject https://gist.githubusercontent.com/adleong/f7318d9282ab99ba12c3479405882e60/raw/713daaa51f035d0d484ea79daf77cc3aaded8010/yml | kubectl apply -f -
# Notice the tracing related config in the nginx config configmap in the aboe gist: https://gist.github.com/adleong/f7318d9282ab99ba12c3479405882e60#file-yml-L340

# Step 5: Install Emojivoto 

linkerd inject https://gist.githubusercontent.com/adleong/d6dd9636a10042a4eb1696361ef14b67/raw/937c5cab78d2b79908600f8e11fbb9bc869fd82e/gistfile1.txt | kubecctl apply -f -
# Notice the env variables have been updated in the above gist https://gist.github.com/adleong/d6dd9636a10042a4eb1696361ef14b67
# OC_AGENT_HOST has been set to collector.linkerd-jaeger:55678 for all deployments
# WEB_HOST has been set to ingress-nginx-controller.ingress-nginx:80 so that vote-bot sends to the nginx ingress

# Step 6: Create an Ingress

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: web
  namespace: emojivoto
spec:
  ingressClassName: nginx
  rules:
  - http:
      paths:
      - backend:
          service:
            name: web-svc
            port:
              number: 80
        path: /
        pathType: Prefix
        
# Now traffic should be flowing vote-bot => nginx-ingress => web => emoji/voting
# with nginx-ingress adding the x-b3 headers and spans being reported to the collector from nginx-ingress, linkerd-proxy, and web

# Validate the x-b3 heaers are being set:
linkerd tap -o json -n ingress-nginx deploy/ingress-nginx-controller

# Validate traces are in jaeger
linkerd jaeger dashboard