cat > /etc/prometheus/prometheus.yml << EOF
scrape_interval: 15s # By default, scrape targets every 15 seconds.
# Attach these labels to any time series or alerts when communicating with
# external systems (federation, remote storage, Alertmanager).
# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
# The job name is added as a label job=<job_name> to any timeseries scraped from this config.
- targets: ['localhost:9100']