Question 1

How do I run my own K6 script with this Docker setup?

Accepted Answer

Mount your script directory into the K6 container using Docker volumes and update the Docker Compose run command. The README shows a workaround with double slashes for path issues, but you can adapt it for custom scripts by modifying the volume mounts and command arguments.

Question 2

docker-k6-grafana-influxdb vs using K6 with Prometheus?

Accepted Answer

This setup is great for quick local testing with integrated visualization via InfluxDB and Grafana, but if you prefer Prometheus for its cloud-native features or existing ecosystem, you'll need to manually reconfigure it. Prometheus offers different scaling and querying capabilities that might be better for production environments.

Question 3

Can I customize the Grafana dashboard in this project?

Accepted Answer

Yes, you can edit the JSON dashboard file in the /dashboards folder and reload it in Grafana. The dashboard is adapted from a public one, so changes may require knowledge of Grafana panels and InfluxDB queries to ensure compatibility.

Question 4

How to test a local API instead of SWAPI with this setup?

Accepted Answer

Update the K6 script to target your local API's URL and adjust Docker network settings to allow container access. You might need to use host networking or expose ports in the Docker Compose file to ensure connectivity from the K6 container.

Question 5

What are the system requirements for running this Docker Compose stack?

Accepted Answer

You need Docker and Docker Compose installed, with sufficient RAM and CPU to run three containers simultaneously. InfluxDB and Grafana can be resource-intensive under load, so allocate at least 2GB of RAM and multiple CPU cores for smooth performance.

Question 6

How to persist InfluxDB data across container restarts?

Accepted Answer

Modify the Docker Compose file to add a volume mount for InfluxDB's data directory, typically by adding a volume entry in the InfluxDB service. Without this, data is ephemeral and lost on container restart, as the default setup doesn't include persistence.

docker-k6-grafana-influxdb

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