ecosystem.config.json

{
  "apps": [
    {
      "name": "node-express-boilerplate:production",
      "script": "build/server.js",
      "instances": 1,
      "autorestart": true,
      "watch": false,
      "time": true,
      "exec_mode": "cluster",
      "error_file": "logs/err.log",
      "out_file": "logs/out.log",
      "merge_logs": true,
      "log_date_format": "YYYY-MM-DD HH:mm:ss",
      "env": {
        "NODE_ENV": "development",
        "PORT": 5000,
        "LOG_LEVEL": "info",
        "DOTENV_CONFIG_PATH": ".env.development"
      },
      "env_staging": {
        "NODE_ENV": "staging",
        "PORT": 5000,
        "LOG_LEVEL": "info",
        "DOTENV_CONFIG_PATH": ".env.staging"
      },
      "env_production": {
        "NODE_ENV": "production",
        "PORT": 5000,
        "LOG_LEVEL": "info",
        "DOTENV_CONFIG_PATH": ".env.production"
      },
      "max_memory_restart": "500M",
      "restart_delay": 5000
    }
  ]
}