There is nothing specific, make your setup as simple as possible, this will leave less moving parts and it likely would be more reliable.
Check your dashboard to make sure that no scores are falling, check your logs for errors related to databases, disk, “i/o” and missing permissions.
It’s also advisable to configure the online monitoring with UptimeRobot or similar external service, but you would receive an offline/online notification from the satellites too (it’s much slower, than UptimeRobot, but it works for me).
If you want to have something advanced, you may use Storj exporter for Prometheus: Prometheus Storj-Exporter and Grafana Alerts: [Tech Preview] Email alerts with Grafana and Prometheus.
For simple and convenient hardware monitoring you may use Monitoring with Netdata
See also Topics tagged monitoring