The Prometheus server requires a configuration file that defines the endpoints to scrape along with how frequently the metrics should be accessed.
The first half of the configuration defines the intervals.
global: scrape_interval: 15s evaluation_interval: 15s
The second half defines the servers and ports that Prometheus should scrape data from. In this example, we have defined two targets running on different ports.
scrape_configs: - job_name: 'prometheus' static_configs: - targets: ['localhost:9090', 'localhost:9100'] labels: group: 'prometheus'
9090 is Prometheus itself. Prometheus exposes information related to its internal metrics and performance and allows it to monitor itself.
9100 is the Node Exporter Prometheus process. This exposes information about the Node, such as disk space, memory and CPU usage.
More information on the default ports can be found at https://github.com/prometheus/prometheus/wiki/Default-port-allocations
Copy the configuration to the editor to continue.