GRPC routes

To use GRPCRoute:

1. Install your traffic provider
2. Install GatewayAPI CRD if your traffic provider doesn't do it by default
3. Install Argo Rollouts
4. Install Argo Rollouts GatewayAPI plugin
5. Create stable and canary services
6. Create GRPCRoute resource according to the GatewayAPI and your traffic provider documentation

   apiVersion: gateway.networking.k8s.io/v1
   kind: GRPCRoute
   metadata:
     name: first-grpcroute
     namespace: default
   spec:
     parentRefs:
       - name: traefik-gateway # read documentation of your traffic provider to understand what you need to specify here
     rules:
       - backendRefs:
           - name: argo-rollouts-stable-service # stable service you have created on the 5th step
             port: 80
           - name: argo-rollouts-canary-service # canary service you have created on the 5th step
             port: 80
   

7. Create Rollout resource

   apiVersion: argoproj.io/v1alpha1
   kind: Rollout
   metadata:
     name: rollouts-demo
     namespace: default
   spec:
     replicas: 2
     strategy:
       canary:
         canaryService: argo-rollouts-canary-service
         stableService: argo-rollouts-stable-service
         trafficRouting:
           plugins:
             argoproj-labs/gatewayAPI:
               grpcRoute: first-grpcroute # grpcroute you have created on the 6th step
               namespace: default # namespace where your grpcroute is
         steps:
           - setWeight: 30
           - pause: { duration: 2 }
     revisionHistoryLimit: 1
     selector:
       matchLabels:
         app: rollouts-demo
     template:
       metadata:
         labels:
           app: rollouts-demo
       spec:
         containers:
           - name: rollouts-demo
             image: argoproj/rollouts-demo:red
             ports:
               - name: http
                 containerPort: 8080
                 protocol: TCP
             resources:
               requests:
                 memory: 32Mi
                 cpu: 5m