Before starting to measure you must first install some prerequisites: Installation → Make sure your docker containers are up and running. If they are not, you can start them by running
docker compose up whilst in the green metrics docker subfolder.
If you came here from interacting with applications → then you can also directly use your
usage_scenario.yml Otherwise we will set it up here.
Measuring a simple example load
We will make the most basic example our tool can handle:
- Using alpine base container.
- Add the package
- Just run a 5 seconds stress run with default metrics providers
So let’s start by going to the install folder of the Green Metrics Tool on your system and
then preparing the
cd PATH_TO_GREEN_METRICS_TOOL/docker docker compose up -d cd /tmp mkdir easiest-application cd easiest-application touch usage_scenario.yml
Now please copy the following code inside the
name: Stress Container One Core 5 Seconds author: Arne Tarara version: 1 architecture: linux services: simple-load-container: image: alpine setup-commands: - apk add stress-ng flow: - name: Stress container: simple-load-container commands: - type: console command: stress-ng -c 1 -t 5 -q note: Starting Stress
Under flow you see that we are just calling
stress-ng -c 1 -t 5, which will stress our CPU for 5 seconds on one core.
cd PATH_TO_GREEN_METRICS_TOOL/tools python3 runner.py --uri /tmp/easiest-application --name testing-my-demo
You should see an example output like so:
Having usage scenario .... .... .... Please access your report with the ID: XXXX-XXXX ...
Now you can view the report as the first item in your metrics dashbard at http://metrics.green-coding.local:8000/request.html
If you have installed a cronjob → you can insert a new job at http://metrics.green-coding.local:8000/request.html
It will be automatically picked up and you will get sent an email with the link to the results.
In order for the email to work correctly you must set the configuration in your