minmon VS node_exporter

MinMon can do this and notify you in different ways. It's easy to set up and as the name suggests it's minimal in terms of resource usage.

Maybe give MinMon a try. It's extremely lightweight and quick to setup.

Yesterday I released MinMon v0.5.1. There are two new checks, NetworkThroughput and DockerContainerStatus and it's possible to use rustls-tls instead of native-tls/OpenSSL. The documentation has been reworked and is a lot more consistent now.

On its way to v1.0 which I plan to release in a few months, v0.4.0 is available now. Contributions and feedback are very welcome!

I'd also like to mention one of my own babies: MinMon. It's a minimalistic monitoring and alarming tool. I wrote it because the alternatives felt too heavy.

It's pretty new but definitely usable already. Check out MinMon: https://github.com/flo-at/minmon

Today I'm releasing MinMon v0.3.1. I used some of the feedback I got from you guys (thanks!) for the first release not too long ago.\ Contributions and feedback are very welcome!

$ wget https://github.com/prometheus/node_exporter/releases/download/v1.7.0/node_exporter-1.7.0.linux-amd64.tar.gz $ tar -xzvf node_exporter-1.7.0.linux-amd64.tar.gz

Node Exporter

The Prometheus node_exporter can provide this information, doesn't require root. You could run it as a systemd user unit if you don't have root.

I personally find it best to learn through experimentation. Start with reading a bit about Prometheus and Grafana through their docs, and then familiarise yourself with setting up a local Prometheus + Grafana instance either locally or with docker using docker-compose, along with something to generate /metrics endpoint for Prometheus to scrape from such as a custom Prometheus exporter in Python or using Node Exporter.

Your best bet might be to fork node_exporter to get you more verbose socket stats: https://github.com/prometheus/node_exporter/blob/master/collector/sockstat_linux.go

I use Grafana + Prometheus + Node Exporter.

Crazy idea, can't NX devices run Docker? I wonder if the node_exporter would work.

Kubernetes itself will not notify you, the way I've seen people do this, is to use something like kube-state-metrics or node_exporter, export that to Prometheus (or preferrably VictoriaMetrics because Prometheus is terrible IMO), and then setup alarms on that with alertmanager or equivalent, or just look at dashboards regularly with Grafana. Realistically I recommend only setting alerts on disk usage and application/database latency. CPU and memory utilization isn't a great metric to alert on a lot of the time.

You may setup node exporter and collect metrics with prometheus for example. Its not quite "simple" way, but still you may find it useful.