vinnie357 Dagu Web UI
Use this skill when working with Dagu's web interface to manage workflows, view execution history, monitor running workflows, or configure the UI.
Core Capabilities
The Dagu Web UI provides:
- Workflow Management - View, start, stop, and manage workflows
- Execution Monitoring - Real-time status and logs
- History Viewing - Past execution records and results
- DAG Visualization - Visual representation of workflow structure
- Log Access - View detailed execution logs
- Schedule Management - Configure when workflows run
Quick Start
Access Dagu Web UI at http://localhost:8080 (default) after starting Dagu:
dagu server
Primary Operations
Start a Workflow
To manually execute a workflow:
- Navigate to workflow list
- Click the workflow name
- Click "Start" button
- View real-time execution progress
Monitor Execution
For detailed information on a running workflow, consult references/monitoring.md which covers:
- Reading execution logs
- Understanding status indicators
- Tracking step progress
- Identifying failures
View History
Execution history is not unconditionally preserved — the REST API supports deleting individual records (DELETE /dags/{dagName}/history/{requestId}, see /dagu:rest-api references/api-endpoints.md "Delete Execution History"). Open a workflow's history to review past runs, find failed executions, and retry them (see Common Tasks).
Workflow Visualization
The DAG view shows workflow structure. Click step names in the DAG view for step-specific details.
When to Consult References
Read references/monitoring.md for execution status indicators, real-time log viewing, progress tracking, error detection, and troubleshooting stuck workflows.
Common Tasks
Restart a Failed Workflow
- Find the failed execution in history
- Click the retry/restart button
- Monitor the new execution
Stop a Running Workflow
- Navigate to the running workflow
- Click "Stop" or "Cancel"
- Confirm the action
- View cleanup handlers execution
View Detailed Logs
When you need to debug a workflow:
- Click on the specific workflow execution
- Select the step with issues
- View stdout/stderr logs
- Check for error messages
For advanced log analysis, consult references/monitoring.md.
Key Principles
- Real-time visibility: Web UI provides live updates of workflow execution
- Click-based operations: No CLI needed for basic workflow management
- History preservation: Executions are logged and accessible; individual records can be deleted via the REST API
- Visual feedback: Status indicators show current state at a glance
- Log accessibility: Detailed logs available for debugging
Pro Tips
- Use the search feature to quickly find workflows by name
- Filter execution history by date range or status
- Click on step names in DAG view for step-specific details
- Use the refresh button if live updates seem delayed
- Check the scheduler status to verify cron jobs are active