Promenade

A local development process manager with a web UI. Run all your services with one command and see their status, logs, and health in a unified dashboard.

Installation

pip install promenade

Quick Start

1. Create a promenade.yaml in your project root:

services:
  api:
    command: flask run --port 5001
    directory: ./backend
    port: 5001
    ready_check:
      type: http
      path: /health

  frontend:
    command: npm run dev
    directory: ./frontend
    port: 3000
    depends_on:
      - api

2. Start everything:

promenade start

3. Open http://localhost:7766 to see the web UI.

Features

• Process supervision - Start, stop, and restart services with automatic dependency ordering
• Health checks - HTTP and TCP health checks with configurable timeouts
• Log aggregation - Unified log viewer with per-service filtering
• Web UI - Real-time dashboard showing service status, health, and logs
• Hot reload - Automatically detects config changes and restarts affected services
• Restart policies - Configure never, once, or always restart behavior

CLI Commands

promenade start              # Start all services (with web UI on port 7766)
promenade start --no-ui      # Start services without the web UI
promenade start --daemon     # Run in background
promenade stop               # Stop all services
promenade status             # Show service status
promenade restart [service]  # Restart a service (or all if no name given)
promenade logs [service]     # View logs
promenade logs -f            # Follow logs in real-time
promenade reload             # Reload config and restart changed services
promenade config check       # Validate your config file

Configuration

Promenade looks for config in this order:

1. --config flag
2. ./promenade.yaml
3. ~/.config/promenade/promenade.yaml

Full Example

manager:
  port: 7766
  host: 127.0.0.1
  log_buffer_lines: 1000

defaults:
  restart_policy: once
  env:
    NODE_ENV: development

services:
  api:
    command: flask run --port 5001
    directory: ./backend
    port: 5001
    env:
      FLASK_DEBUG: "1"
    ready_check:
      type: http
      path: /health
      timeout: 30
      interval: 2

  frontend:
    command: npm run dev
    directory: ./frontend
    port: 3000
    depends_on:
      - api
    ready_check:
      type: tcp
      timeout: 30

  worker:
    command: python worker.py
    directory: ./backend
    restart_policy: always

Service Options

Health Checks

ready_check:
  type: http          # or "tcp"
  path: /health       # HTTP only
  timeout: 30         # Seconds to wait for healthy
  interval: 2         # Seconds between checks

Running as a Daemon

For services you always want running, you can set up promenade to start automatically on login.

macOS (launchd)

Create ~/Library/LaunchAgents/com.promenade.plist:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.promenade</string>
    <key>ProgramArguments</key>
    <array>
        <string>/path/to/promenade</string>
        <string>start</string>
        <string>--no-ui</string>
    </array>
    <key>RunAtLoad</key>
    <true/>
    <key>KeepAlive</key>
    <true/>
    <key>StandardOutPath</key>
    <string>/tmp/promenade.log</string>
    <key>StandardErrorPath</key>
    <string>/tmp/promenade.log</string>
</dict>
</plist>

Then load it:

launchctl load ~/Library/LaunchAgents/com.promenade.plist

Find the path to promenade with which promenade.

Linux (systemd)

Create ~/.config/systemd/user/promenade.service:

[Unit]
Description=Promenade Dev Services

[Service]
ExecStart=/path/to/promenade start --no-ui
Restart=always

[Install]
WantedBy=default.target

Then enable it:

systemctl --user enable --now promenade

REST API

The manager exposes a REST API at the same port as the web UI:

• GET /api/status - All services status
• GET /api/services/{name} - Single service status
• POST /api/services/{name}/start - Start a service
• POST /api/services/{name}/stop - Stop a service
• POST /api/services/{name}/restart - Restart a service
• GET /api/services/{name}/logs - Get service logs
• POST /api/reload - Reload configuration
• WS /api/logs/stream - WebSocket for real-time logs

License

MIT