Metrics

Grafana + InfluxDB

Time-series metrics visualization (Grafana) and storage (InfluxDB), with Telegraf agents on all hosts and via SNMP for Synology.

Grafana and InfluxDB form the time-series metrics stack, dashboards for CPU, memory, disk, network, and service-specific data across every host.

See Grafana in Self-Hosted Applications for more details.