PM2 进程管理器

用于 Node.js 的生产环境进程管理器，内置负载均衡器。

安装

npm install -g pm2

快速开始

# Start an app
pm2 start app.js
pm2 start npm --name "my-app" -- start
pm2 start "npm run start" --name my-app

# With specific port/env
pm2 start npm --name "my-app" -- start -- --port 3000
PORT=3000 pm2 start npm --name "my-app" -- start

常用命令

# List processes
pm2 list
pm2 ls

# Logs
pm2 logs              # All logs
pm2 logs my-app       # Specific app
pm2 logs --lines 100  # Last 100 lines

# Control
pm2 restart my-app
pm2 stop my-app
pm2 delete my-app
pm2 reload my-app     # Zero-downtime reload

# Info
pm2 show my-app
pm2 monit             # Real-time monitor

开机自启动

# Save current process list
pm2 save

# Generate startup script (run the output command with sudo)
pm2 startup

# Example output - run this:
# sudo env PATH=$PATH:/opt/homebrew/bin pm2 startup launchd -u username --hp /Users/username

Next.js / 生产环境构建

# Build first
npm run build

# Start production server
pm2 start npm --name "my-app" -- start

# Or with ecosystem file
pm2 start ecosystem.config.js

生态系统文件 (ecosystem.config.js)

module.exports = {
  apps: [{
    name: 'my-app',
    script: 'npm',
    args: 'start',
    cwd: '/path/to/app',
    env: {
      NODE_ENV: 'production',
      PORT: 3000
    }
  }]
}

实用标志

清理

pm2 delete all        # Remove all processes
pm2 kill              # Kill PM2 daemon
pm2 unstartup         # Remove startup script