Installation de dashboards avec PostgreSQL/timescaledb + grafana ¶

Introduction ¶

locust-plugins enables you to:

log Locust’s results to a Postgres/Timescale database
and to analyze them using Grafana in real time, or after the test has completed.

The dashboards provide a good overview as well as the ability to drill down, as each request is logged individually. It also logs important run events (number of active users, ramp up finished etc) as well as aggregated results after the test has finished. Because the data is persisted, you can also track any changes in the performance of your system over time.

This aims to be a complete replacement for the reporting/graphing parts of the Locust web UI, so it is often used with Locust in –headless mode.

Because Timescale is queried using regular SQL it is relatively straightforward make your own custom dashboards or edit the existing ones.

You can even calculate your own completely custom metrics (e.g. number of requests above a certain response time threshold).

Installation with docker-compose ¶

https://docs.locust.io/en/stable/configuration.html#configuration-file
set up Timescale and Grafana (documented below
import locust_plugins in your locustfile (or any of locust_plugins underlying modules)
Add –timescale to the command line (or set the LOCUST_TIMESCALE env var to 1, or add it to your .conf files <https://docs.locust.io/en/stable/configuration.html#configuration-file> )

LOCUST_TIMESCALE environment variable ¶

LOCUST_TIMESCALE

Set up PostgreSQL/Timescale and Grafana ¶

Assuming you already have docker set up, all you need to do is run:

            locust-compose up

           

That will give you:

a PostgreSQL/Timescale container (for receiving and storing data)
and a Grafana container (for showing nice graphs based on said data)