Cronicle

Cronicle is a multi-server task scheduler and runner that provides a web-based UI for scheduling, executing and monitoring jobs. It supports scheduled, recurring and on-demand jobs across many worker servers, with real-time status, live logs and historical metrics.

Key Features

• Multi-server architecture with auto-discovery, primary/backup roles and automatic failover
• Visual date/time selector for single or recurring schedules with multi-timezone support
• Support for targeted runs (single server, groups, random selection) and chaining events
• Real-time job status, live log viewer and graphical performance metrics (CPU/memory, custom metrics)
• Plugin API: plugins are plain executables (any language) communicating via JSON
• External JSON REST API and API keys for remote triggering and automation
• Storage-by-filesystem (JSON) by default; optional shared storage/backends supported for clusters
• Simple install and Node.js/npm-based distribution with packaged CLI/control scripts

Use Cases

• Run and monitor automated system maintenance, backups and periodic administration tasks
• Orchestrate multi-step data processing workflows across multiple servers with chained events
• Provide a lightweight replacement for cron with centralized logs, retries and real-time monitoring

Limitations and Considerations

• Requires a POSIX environment (Linux/macOS); Windows is not a supported platform
• Designed to run on Node.js Active LTS releases; may not work on current/non-LTS Node channels
• Multi-primary clusters require shared storage (e.g., shared filesystem or supported storage backend) for reliable failover

Cronicle is a pragmatic, open-source scheduler focused on operability and extensibility. It emphasizes simple plugin integration, real-time visibility and predictable multi-server behavior for production task orchestration.