A previous post described how to monitor a Synology NAS with SNMP and Prometheus. This post goes over the Ansible role created to deploy the snmp_exporter. I’m rather dissatisfied with the way I’m doing testing with molecule at the moment, so I’m not releasing the full role in a repo at this time. However the important files are layed out. It would probably be nicer to build an image with the SNMP exporter and deploy a container, but this Ansible deployment was quick and easy to bang out.

My Synology NAS is a very important part of my home network, and until recently it was practically unmonitored. Synology doesn’t make it easy to monitor their NAS devices out of the box. It’s possible to get Prometheus’ node exporter running, but that doesn’t export all of the metrics of interest and is generally a pain to deal with. I also prefer to minimize the number of things running on my NAS.