Linux Monitoring

Install NodeExporter on your target(s)

* curl -LO https://github.com/prometheus/node_exporter/releases/download/v0.18.1/node_exporter-0.18.1.linux-amd64.tar.gz

* tar xvf node_exporter-0.18.1.linux-amd64.tar.gz
* sudo cp node_exporter-0.18.1.linux-amd64/node_exporter /usr/local/bin/
* sudo useradd --no-create-home --shell /bin/false node_exporter
* sudo chown node_exporter:node_exporter /usr/local/bin/node_exporter
* sudo vi /etc/systemd/system/node_exporter.service
<< Insert file found in systemctl/node_exporter.service here >>

* sudo systemctl daemon-reload
* sudo systemctl start node_exporter
* sudo systemctl enable node_exporter

Configure Prometheus to scrape your target(s)

Edit prometheus/prometheus.yml to add your linux instance to the scrape config. A template is available for you with job name my-linux-box. Modify the targets array to include the IP Addresses of your box and the port in which prometheus can scrape the NodeExporter service.

- job_name: 'my-linux-box'
  static_configs:
    - targets: ['123.123.123.123:9100']

Run the docker-compose stack

docker-compose up -d

Verify the containers are running properly

docker ps -a

linux-monitoring> docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
7571a0ac669c prom/prometheus:latest "/bin/prometheus --c…" 6 seconds ago Up 5 seconds 0.0.0.0:9090->9090/tcp prometheus
a1a130fb0d4c grafana/grafana:latest "/run.sh" 6 seconds ago Up 5 seconds 0.0.0.0:3000->3000/tcp grafana

Visit Grafana

Visit: http://localhost:3000/login Auth: admin:test

Navigate to: http://localhost:3000/d/nodeexporter/node-exporter?orgId=1&refresh=5s

Troubleshooting

If nothing shows up on the nodeexporter page, verify your targets are being scraped properly by visiting Prometheus: http://localhost:9090/targets