traefik is in its v2 alpha, so what does it take to get running
auto discover services with --providers.kubernetes and --providers.kubernetescrd,
to discover them from Ingresses and IngressRoutes
traefik can automatically get tls certificates from providers such as let's encrypt, but they have rate limiting. also traefik can only store the certs in a file (no shared use) or a key-value store
instead i've set up cert-manager which can store certs in a k8s secret and mapped those into traefik
so far no explicit support for grpc-web, your server still needs to understand grpc-web on its own at least the reverse proxy doesn't break anything