View the diagnostics endpoint directly in localstack

The extension is a web UI for the diagnosis endpoint of LocalStack, which is enabled when LocalStack is started with DEBUG=1 and available at curl -s localhost:4566/_localstack/diagnose. The web UI can then be reached at http://localhost:4566/diapretty.

Install the extension by running:

localstack extensions install localstack-extension-diagnosis-viewer

To install the extension into localstack in developer mode, you will need Python 3.10, and create a virtual environment in the extensions project.

In the newly generated project, simply run

make install

Then, to enable the extension for LocalStack, run

localstack extensions dev enable .

You can then start LocalStack with EXTENSION_DEV_MODE=1 to load all enabled extensions. Make sure to also set DEBUG=1 so the diagnose endpoint necessary to populate the report is loaded.

EXTENSION_DEV_MODE=1 DEBUG=1 localstack start