I am trying to setup Load Balancer on GCP with multiple Ingresses in different namespaces. I followed this tutorial followingly:

1. Created Cluster on GKE
2. Created nginx-ingress Controller and a Service
3. Created nginx Ingress and a Service in a different namespace

Unfortunately, at this point, the service is unreachable leading to nginx-ingress Controller returning with HTTP 503.

I tried deploying the service in the same namespace as Ingress Controller and that is working fine. I suspect there could be issues with RBAC/ABAC setup?