I'm trying create Grafana dashboard to monitor our infrastructure, installed and configured Grafana, Prometheus.
configured/created datasource is fine, yet every graph is showing NA(not available?)
Grafana 7.3.7 | Prometheus 2.1.0+ds | Node Exporter 0.15.2+ds
Is there anything that I'm missing here, any help/pointers please.
followed this article - https://oastic.com/posts/how-to-monitor-an-ubuntu-server-with-grafana-prometheus/.