For metrics and monitoring, can highly recommend victoria-metrics + vmagent + vmalert + prometheus-node-exporter. Rock solid, lean and performant. Documentation isn't all there and some of the debian packages aren't stellar (so you may want to build your own, which is ezpz) but IME it's a reliable stack.
They do integrate with Grafana much like Prometheus but we are not happy with Grafana[0] and recommendations for something low-maintenance we can drop in to the above stack instead would be awesome.
[0]: Why? Managing dashboards/plugins in an airgapped IaC setting is like pulling teeth at every other turn. Then at one point supposedly we had the container version pinned (by tag not sha, lesson learned) but yet at some point an image update from Docker Hub broke most of our dashboard/data-source links so now those dashboards are broken and I'd rather try something new before I recommit to Grafana.
They do integrate with Grafana much like Prometheus but we are not happy with Grafana[0] and recommendations for something low-maintenance we can drop in to the above stack instead would be awesome.
[0]: Why? Managing dashboards/plugins in an airgapped IaC setting is like pulling teeth at every other turn. Then at one point supposedly we had the container version pinned (by tag not sha, lesson learned) but yet at some point an image update from Docker Hub broke most of our dashboard/data-source links so now those dashboards are broken and I'd rather try something new before I recommit to Grafana.