feat: exporters for prometheus

knowledge base/node exporter.md

@@ -0,0 +1,31 @@
+# Node exporter
+
+## Table of contents <!-- omit in toc -->
+
+1. [Further readings](#further-readings)
+1. [Sources](#sources)
+
+## Further readings
+
+- [Github]
+- [Prometheus]
+
+## Sources
+
+All the references in the [further readings] section, plus the following:
+
+- [Node exporter guide]
+
+<!--
+  References
+  -->
+
+<!-- Upstream -->
+[github]: https://github.com/prometheus/node_exporter
+[node exporter guide]: https://prometheus.io/docs/guides/node-exporter/
+
+<!-- In-article sections -->
+[further readings]: #further-readings
+
+<!-- Knowledge base -->
+[prometheus]: prometheus.md