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Monitoring Containers with Prometheus

For the last six months, the Acme Anvil Corporation has been migrating some of their bare metal infrastructure to Docker containers. It’s time to implement some basic monitoring in the environment. You will handle this in two ways: using `Docker stats` and Prometheus. Your mission is to set up Prometheus and cAdvisor using Docker Compose. You can get more information on Prometheus at [prometheus.io](https://prometheus.io/).

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Path Info

Level

Intermediate

Duration

1h 30m

Published

Nov 07, 2018

Challenge

Create a prometheus.yml File

In the root directory, create prometheus.yml:

scrape_configs:
- job_name: cadvisor
  scrape_interval: 5s
  static_configs:
  - targets:
    - cadvisor:8080

Challenge

Create the Prometheus Services

Create a docker-compose.yml file:

version: '3'
services:
  prometheus:
    image: prom/prometheus:latest
    container_name: prometheus
    ports:
      - 9090:9090
    command:
      - --config.file=/etc/prometheus/prometheus.yml
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
    depends_on:
      - cadvisor
    
  cadvisor:
    image: google/cadvisor:latest
    container_name: cadvisor
    ports:
      - 8080:8080
    volumes:
      - /:/rootfs:ro
      - /var/run:/var/run:rw
      - /sys:/sys:ro
      - /var/lib/docker:/var/lib/docker:ro

Stand up the environment.

docker-compose up -d

Challenge

Create stats.sh
Create stats.sh in /root.
```
docker stats --format "table {{.Name}} {{.ID}} {{.MemUsage}} {{.CPUPerc}}"
```
Make sure the file can be executed.
```
chmod a+x stats.sh
```
Execute the script.
```
./stats.sh
```
When you're finished, exit by pressing Ctrl+C.

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!

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