Note
The Prometheus module is different from the one in :ref:`metrics-section`. This module is focused on monitoring external services and applications.
NethServer 8 includes a widely adopted monitoring stack composed by:
- Prometheus scrapes all metrics endpoint and stores them on a local disk
- Grafana visualizes the collected metrics
This is the same stack used by :ref:`metrics-section`, but this module is focused on monitoring external services and applications.
You can install only one instance of Prometheus, usually on the leader node.
Prometheus does not require any configuration and it will be exposed on a random URL.
The URL is available on the Prometheus instance Status page. You can access it from the software center or
from the application menu in the top-right corner.
Since core 3.5.0, the node_exporter is already installed as core module on all nodes. Prometheus will automatically scrape metrics from all nodes.
Grafana can be installed only on the leader node.
After installation, you will need to configure the Host name with a valid FQDN to access the Grafana instance.
Enable Let's Encrypt and HTTP to HTTPS options accordingly to your needs.
Grafana will automatically display metrics from Prometheus and :ref:`Loki <loki-section>`.