Node Exporter with Prometheus Docker Compose

In this tutorial, we will show you how to set up a Node Exporter service with Prometheus and Grafana using Docker Compose. The Node Exporter is a popular tool for collecting system metrics from nodes, and it can be easily integrated with Prometheus and Grafana for monitoring purposes.

Setting Up the Environment

To get started, you need to create a new directory for your project and add a `docker-compose.yml` file to it. Here's an example of what the file should look like:

```yaml

version: '3'

services:

prometheus:

image: prom/prometheus

volumes:

- ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml

ports:

- '9090:9090'

nodeexporter:

image: prom/node-exporter

volumes:

- /proc:/host/proc:ro

- /sys/fs/cgroup:/host/sys/fs/cgroup:ro

expose:

- '9100'

grafana:

image: grafana/grafana

ports:

- '3000:3000'

volumes:

- ./grafana/provisioning/dashboards:/etc/grafana/dashboards

```

Starting the Services

Once you have created the `docker-compose.yml` file, you can start the services by running the following command in your terminal:

```

docker-compose up -d

```

This will start all the services in detached mode. You can check the status of the services by running:

```

docker-compose ps

```

Accessing the Services

Once the services are started, you can access them using their respective ports. Prometheus is available at `http://localhost:9090`, Node Exporter is available at `http://localhost:9100`, and Grafana is available at `http://localhost:3000`.

Troubleshooting

If you encounter any issues while setting up the services, you can check the logs for each service by running:

```

docker-compose logs -f

```

Replace `` with the name of the service that's experiencing issues.

In this example, we were unable to access Node Exporter via `http://localhost:9100`. The Node Exporter's docker logs show that it is listening on port 9100, but `lsof` does not show this. To troubleshoot this issue, you can try restarting the Node Exporter service or checking the Docker container's network configuration.

In this tutorial, we showed you how to set up a Node Exporter service with Prometheus and Grafana using Docker Compose. We also covered some common troubleshooting steps for issues that may arise during setup. With these tools, you can easily monitor your nodes and collect system metrics for analysis and visualization.

Node exporter prometheus docker compose