• Interface monitor task
  • Table of Contents
• Description
  • Requirements
  • Install
  • Usage
  • Monitoring
  • Maintainers
  • License

Just a small program using Python language that prints every 30 seconds (configurable through the INTERVAL env var) the following data in json format: RX/TX packets, bytes and errors of the default network interface.

sample output

{
  "interface": "eth0",
  "rx": {
    "rx_bytes": "2809",
    "rx_errors": "0",
    "rx_packets": "322"
  },
  "tx": {
    "tx_bytes": "367",
    "tx_errors": "0",
    "tx_packets": "36"
  }
}

you will need python, docker for the installation

In order to install the application you can create a python virtual environment just to keep your system clear without unnused python modules.

cd /path/to/the/project/
python3 -m venv venv
source venv/bin/activate
pip install --no-cache-dir -r requirements.txt
gunicorn -c gunicorn_config.py app:app
# now you should be able to access the web api through http://0.0.0.0:5000/

and for the deployment to kubernetes I strongly recommend you to use kustomize

cd /path/to/the/project/
# if you wanna change the image use the command  kustomize edit set image <image>=<newimage>:<newtag>
# default files
kubectl apply -k k8s
# Overlays
kubectl apply -k k8s/overlays/dev/

if you only want to test the application you can deploy the minimal_k8s.yaml file after checking that the deployment image is pointing to the correct value

cd /path/to/the/project/
kubectl apply -f k8s/minimal_k8s.yaml  # notice the difference with -f instad of -k

just use the browser to http://0.0.0.0:5000/ or you can also use curl :)

curl http://0.0.0.0:5000/ | jq # jq must be installed (no needed)

The application expose a dummy healthcheck under the following path http://0.0.0.0:5000/healthz

• .gitlab-ci-template.yml
• .gitlab-ci.yml
• Dockerfile
• gunicorn
• version-validation
• minimal_k8s.yaml
• k8s