You can find here a helm chart we're using at MySocialApp (iOS and Android social app builder - SaaS)
Network checker is a Kubernetes application. Its main purpose is checking of connectivity between the cluster's nodes.
This Helm Chart deploy a Prometheus Exporter. You can then use this Grafana dashboard to display the number of nodes in you Cluster, the latency seen between each others and compare to the number of nodes seen bby Kubernetes itself:
There is also blackbox exporter added to monitor external devices to help on host correlation.