Lab
A Cloud Guru

Docker Daemon Monitoring with Prometheus

Prometheus is capable of monitoring a wide variety of systems and infrastructures, including Docker. In this lab, you will have the opportunity to set up Prometheus to monitor a Docker daemon. This will give you some hands-on experience with the process of monitoring Docker daemons with Prometheus.

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Path Info

Level

Intermediate

Duration

45m

Published

Jun 12, 2020

Challenge

Configure the Docker Daemon to Serve Prometheus Metrics
1. Log in to the Docker server.
2. Edit the Docker config file:
```
sudo vi /etc/docker/daemon.json
```
3. Add configuration to enable experimental mode and set the metrics address:
```
{
  "experimental": true,
  "metrics-addr": "10.0.1.102:9323"
}
```
4. Restart Docker to load the new configuration:
```
sudo systemctl restart docker
```
5. Verify Docker is serving Prometheus metrics:
```
curl 10.0.1.102:9323/metrics
```
Challenge

Configure Prometheus to Scrape Docker Metrics
1. Log in to the Prometheus server.
2. Edit the Prometheus config:
```
sudo vi /etc/prometheus/prometheus.yml
```
3. Under the scrape_configs section, add a scrape configuration for Docker:
```
- job_name: 'Docker'
  static_configs:
  - targets: ['limedrop-docker:9323']
```
4. Restart Prometheus to load the new configuration:
```
sudo systemctl restart prometheus
```
5. Use the expression browser to verify you can see Docker metrics in Prometheus. You can access the expression browser in a web browser at http://<PROMETHEUS_SERVER_PUBLIC_IP>:9090.
6. Run a query to view some Docker metric data:
```
engine_daemon_container_states_containers
```

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.