cflokiworker

cflokiworker is a Cloudflare Tail Worker for pushing logs and unhandled exceptions to Grafana Loki from your Cloudflare workers.

The worker is being used on production for collecting logs from the ScreenshotOne API Gateway which is implemented as a Cloudflare worker.

Getting Started

Clone or Fork, and Deploy

You can clone the repository and use it directly for your needs without any modifications.

git clone git@github.com:screenshotone/cflokiworker.git
npm install
npm run deploy

Or you can fork it, modify, and deploy your version of the worker. If you feel it can be shared with everybody, don't hesitate to contribute back by creating a pull request.

Attach to Workers

Once deployed to Cloudflare, you need to update your wrangler.toml for workers you want to stream logs from:

tail_consumers = [{ service = "logger" }]

GitHub Actions

When using with GitHub Actions, you need to have 2 secrets available:

• `LOKI_PUSH_URL`` is an HTTP URL of the Loki instance.
• LOKI_CREDENTIALS is a base64-encoded username:password for accessing the Loki instance.

Resources

You can learn more about Cloudflare Tail Workers at:

1. Cloudflare Tail Workers official documentation.
2. A guide on pushing logs to Grafana Loki from Cloudflare Workers with Tail Workers.

License

cflokiworker is released under the MIT license.