Pup - Universal Process Manager

Pup is a powerful universal process manager developed with Deno, designed to keep your applications and services alive.

For detailed documentation, visit hexagon.github.io/pup.

Key Features

• Cross-platform and wide OS compatibility: Manage processes for various languages and platforms, such as Deno, Node.js, Python, and Ruby on Windows, macOS, and Linux.
• Process management: Define, control, and manage your processes with simple commands and configuration options.
• Multiple start/restart policies: Set up processes to start automatically, on a schedule (using cron expressions), or when files change.
• Service management: Built-in installer for Linux (sysvinit, systemd, upstart), macOS, and Windows services.
• Clustering and load balancing: Scale your application seamlessly with built-in clustering and load balancing capabilities.
• Plugins: Extend Pup’s functionality with custom plugins for additional features and integrations.
• Process Telemetry and IPC: Pup can gather telemetry data from Deno client processes, such as memory usage and current working directory, providing deeper insights into managed processes. The telemetry feature also enables inter-process communication, allowing connected processes to interact with one another.

Note: Programmatic usage, process telemetry, and IPC are currently available only when running Deno client processes.

Quick Start

Installation

1. Install Deno on your system.
2. Install or upgrade Pup using Deno:

# Install
deno install -Afr https://deno.land/x/pup/pup.ts

# Upgrade/Downgrade
pup upgrade

This command downloads the Pup executable and installs it on your system. The A flag grants all permissions, f overwrites any existing installation, and r ensures no cache is used.

Usage Examples

Single command example

Use pup run with --cmd and a restart policy, for example --autostart, this will keep your process running, and require no configuration.

pup run --cmd "deno run server.ts" --autostart

Ecosystem example

1. Initialise a new configuration file pup.json, running a server script using deno.

   pup init --id "my-server" --cmd "deno run -A server.ts" --autostart

2. Add hourly task using the cron start policy.

   pup append --id "my-task" --cmd "deno run -A task.ts" --cron "0 0 * * * *"

3. Launch your ecosystem.

   pup run

4. Optional: Install your ecosystem as a system service. Works systemd, sysvinit, upstart, launchd and Windows service manager.

   pup service install --name my-service

For the full manual, see https://hexagon.github.io/pup

Example setups

Full examples available at /docs/examples

Contributions and Development

Contributions to Pup are very welcome! Please read the contibuting section of the manual, fork the repository, make your changes, and submit a pull request.

We appreciate all feedback and contributions that help make Pup better!

Examples of areas that need extra attention right now

• Plugin development: Invent new plugins for Pup, or help out by improving the existing (work in progress) web-interface plugin. See https://hexagon.github.io/pup/examples/plugins/README.html to get started.
• Testing: Pup needs to be thoroughly tested; help out by using and testing it in various scenarios. Report any issues you find.
• Reading: Review the documentation and report any issues or areas for improvement.
• Bugfixes: Find bugs, report them, and optionally create a PR to fix the issue.
• Spread the word: If you find Pup useful, spread the word to attract more users, developers, and testers to the community. Sharing your experiences and showcasing Pup’s capabilities can help grow and strengthen the project.