Navigation :

Set up routing for sample apps

Set up some Gloo resources to manage traffic to your Bookinfo and httpbin apps. The following example creates an HTTP virtual gateway and route table for your sample apps on the www.example.com host. You can use this setup to test most of the Gloo policies.

Create a VirtualGateway resource to configure an HTTP listener on your ingress gateway proxy, which starts a process that continuously listens for incoming client requests for a specific host, port, and protocol.

kubectl apply -f- <<EOF
apiVersion: networking.gloo.solo.io/v2
kind: VirtualGateway
metadata:
  name: istio-ingressgateway
  namespace: bookinfo
spec:
  listeners:
  - http: {}
    port:
      number: 80
  workloads:
  - selector:
      labels:
        istio: ingressgateway
EOF

Set up a route table to forward incoming requests to the services of the Bookinfo and httpbin apps that you exposed with the HTTP gateway.

kubectl apply -f- <<EOF
apiVersion: networking.gloo.solo.io/v2
kind: RouteTable
metadata:
  name: www-example-com
  namespace: bookinfo
spec:
  hosts:
    - www.example.com
  # Selects the virtual gateway you previously created
  virtualGateways:
    - name: istio-ingressgateway
      namespace: bookinfo
  http:
    # Route for the main productpage app
    - name: productpage
      matchers:
      - uri:
          prefix: /productpage
      forwardTo:
        destinations:
          - ref:
              name: productpage
              namespace: bookinfo
            port:
              number: 9080
    # Routes all /reviews requests to the reviews-v1 or reviews-v2 apps
    - name: reviews
      labels: 
        route: reviews
      matchers:
      - uri:
          prefix: /reviews
      forwardTo:
        destinations:
          - ref:
              name: reviews
              namespace: bookinfo
            port:
              number: 9080
    # Routes all /ratings requests to the ratings-v1 app
    - name: ratings-ingress
      labels:
        route: ratings
      matchers:
      - uri:
          prefix: /ratings
      forwardTo:
        destinations:
          - ref:
              name: ratings
              namespace: bookinfo
            port:
              number: 9080
    # Route for the httpbin app
    - name: httpbin-ingress
      labels:
        route: httpbin
      matchers:
      - headers:
        - name: X-httpbin
      forwardTo:
        destinations:
          - ref:
              name: httpbin
              namespace: httpbin
            port:
              number: 8000

EOF

Save the external address of the ingress gateway.

LoadBalancer IP address
EKS: LoadBalancer hostname

export INGRESS_GW_IP=$(kubectl get svc -n gloo-mesh-gateways istio-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
echo $INGRESS_GW_IP

export INGRESS_GW_IP=$(kubectl get svc -n gloo-mesh-gateways istio-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].hostname}')
echo $INGRESS_GW_IP

Send a request to each route to verify that you can reach the apps’ services. If not, try Debugging your route.

productpage:

curl -vik http://www.example.com:80/productpage --resolve www.example.com:80:$INGRESS_GW_IP

Example output:

HTTP/2 200 
...

ratings:

curl -vik http://www.example.com:80/ratings/1 --resolve www.example.com:80:$INGRESS_GW_IP

Example output:

HTTP/2 200
...
{"id":1,"ratings":{"Reviewer1":5,"Reviewer2":4}}

reviews:

curl -vik http://www.example.com:80/reviews/1 --resolve www.example.com:80:$INGRESS_GW_IP
curl -vik http://www.example.com:80/reviews/2 --resolve www.example.com:80:$INGRESS_GW_IP

Example output:

HTTP/2 200 
...
{"id": "1","podname": "reviews-v1-55b668fc65-6pc2c","clustername": "null","reviews": [{  "reviewer": "Reviewer1",  "text": "An extremely entertaining play by Shakespeare. The slapstick humour is refreshing!"},{  "reviewer": "Reviewer2",  "text": "Absolutely fun and entertaining. The play lacks thematic depth when compared to other plays by Shakespeare."}]}

httpbin:

curl -vik http://www.example.com:80/status/200 -H "X-httpbin: true" --resolve www.example.com:80:$INGRESS_GW_IP

Example output:

HTTP/2 200

Apply a fault injection policy to the reviews service to delay requests and simulate network issues or an overloaded service.

Set up routing for sample apps

Next