[installation of MetalLB using the official manifests]
$ kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.10.2/manifests/namespace.yaml
$ kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.10.2/manifests/metallb.yaml

[view the details of Service]
$ kubectl get service -n web

[curl the endpoint]
$ curl <EXTERNAL-IP>
<html><body><h1>It works!</h1></body></html>
