Monitoring a Flatcar node using Prometheus, Grafana and Node Exporter

grafana.service

[Unit]
Description=Grafana
After=docker.service
Requires=docker.service

[Service]
TimeoutStartSec=0
Restart=always
ExecStartPre=-/usr/bin/docker stop %n
ExecStartPre=-/usr/bin/docker rm %n
ExecStartPre=/usr/bin/docker pull grafana/grafana
ExecStart=/usr/bin/docker run --rm --name %n \
  -p 3000:3000 \
  grafana/grafana

[Install]
WantedBy=multi-user.target

node-exporter.service

[Unit]
Description=Prometheus Node Exporter
After=docker.service
Requires=docker.service

[Service]
TimeoutStartSec=0
Restart=always
ExecStartPre=-/usr/bin/docker stop %n
ExecStartPre=-/usr/bin/docker rm %n
ExecStartPre=/usr/bin/docker pull prom/node-exporter
ExecStart=/usr/bin/docker run --rm --name %n \
  -p 9100:9100 \
  prom/node-exporter

[Install]
WantedBy=multi-user.target

prometheus.service

[Unit]
Description=Prometheus
After=docker.service
Requires=docker.service

[Service]
TimeoutStartSec=0
Restart=always
ExecStartPre=-/usr/bin/docker stop %n
ExecStartPre=-/usr/bin/docker rm %n
ExecStartPre=/usr/bin/docker pull prom/prometheus
ExecStart=/usr/bin/docker run --rm --name %n \
  -v /etc/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml \
  -v prometheus:/prometheus \
  -p 9090:9090 \
  prom/prometheus

[Install]
WantedBy=multi-user.target

prometheus.yml

global:
  scrape_interval:     15s
  evaluation_interval: 15s

scrape_configs:
- job_name: 'prometheus'
  static_configs:
  - targets: ['localhost:9090']

- job_name: 'node'
  static_configs:
  - targets: ['172.17.0.1:9100']