update instructions

Author: rjkoh

kubernetes/README.md

@@ -11,11 +11,12 @@
       * `kubectl rollout restart deployment metrics-server -n kube-system`
 
 3. Build the PeerPrep Docker containers with `docker compose build`
-4. Add your docker username in `deploy.sh` at root.
-5. To deploy on Kubernetes, run `./deploy.sh` at root.
-6. View deployments, pods and HPA. Ensure all services are running. `kubectl get all`
-7. Wait for a few minutes for kubernetes to become fully functional. It is ready when running `kubectl get hpa` does not show any `<unknown>` under `TARGETS`
-8. Load testing: 
+4. Create the configmap for the nginx api-gateway: run `kubectl create configmap nginx-config --from-file=backend/api-gateway/nginx.conf` at root.
+5. Add your docker username in `deploy.sh` at root.
+6. To deploy on Kubernetes, run `./deploy.sh` at root.
+7. View deployments, pods and HPA. Ensure all services are running. `kubectl get all`
+8. Wait for a few minutes for kubernetes to become fully functional. It is ready when running `kubectl get hpa` does not show any `<unknown>` under `TARGETS`
+9. Load testing: 
     * In a separate terminal, run command to carry conduct load testing
     ```
     kubectl run -i --tty load-generator --rm --image=busybox:1.28 --restart=Never -- /bin/sh -c "while sleep 0.01; do wget -q -O- http://<service>.default.svc.cluster.local:<port>/<route>/test; done"
@@ -27,10 +28,10 @@
       4. Collaboration Service: `http://collaboration-service.default.svc.cluster.local:3004/api/collab/test`
     * `Ctrl + C` to stop sending requests
 
-9. Monitor autoscaling with `kubectl get hpa <service>-hpa --watch`. This command will watch the HPA in real-time, showing changes in replica counts and metrics. It requires a few minutes for the pods to scale up and down. Replace `<service>` appropriately with:
+10. Monitor autoscaling with `kubectl get hpa <service>-hpa --watch`. This command will watch the HPA in real-time, showing changes in replica counts and metrics. It requires a few minutes for the pods to scale up and down. Replace `<service>` appropriately with:
     * user-service
     * question-service
     * matching-service
     * collaboration-service
 
-10. `Ctrl + C` to exit. To stop and delete to prevent resource wastage: `kubectl delete all --all`
+11. `Ctrl + C` to exit. To stop and delete to prevent resource wastage: `kubectl delete all --all`