GitLab Prometheus Kubernetes

HI!

I try to use GitLab 11.3.4 (standalone server) + integrated Prometheus and remote Kubernetes cluster with CI from GitLab. I dont understand what to do to see metric in Prometheus from Kubernetes. Is there somewhere available documentation, for the best method? I read hear:
https://docs.gitlab.com/ee/administration/monitoring/prometheus/
But it doesn’t help.