Background & Reasoning

When using Dagu servers as remote DAG executors, the RemoteNode configuration allows monitoring multiple remote servers through a single Web UI URL. In such scenarios, the Web UI on the remote executor server itself becomes unnecessary. Keeping both the monitoring server's URL and the remote executor server's URL accessible may lead to user confusion.

Proposed Design

Add a new configuration option, DAGU_HEADLESS, to disable the Web UI on the remote executor server.

Example Configuration:

# config.yaml
headless: true

Environment Variable:
DAGU_HEADLESS=1

Enabling this option will disable the Web UI on the remote server so that only a single URL is used for entire setup.