Heroku部署应用后无法执行ping命令问题求助

Hey there, let's work through your problems one by one:

1. Why ping isn't working on Heroku #

Your local environment comes with the ping utility pre-installed, but Heroku's default dyno runs on a stripped-down Debian-based Linux image—most non-essential tools (including ping) aren't included by default to keep the image lightweight and efficient.

Here are two practical fixes for this:

• Use a built-in alternative: For basic connectivity checks, reach for curl or wget which are pre-installed on Heroku dynos. For example:

  getAsync('curl -I google.com').then(data => { res.send(data); });
  

• Install ping during deployment: If you absolutely need to use ping, add a postinstall script to your package.json to install the required package during the build process:

  "scripts": {
    "start": "node your-app.js",
    "postinstall": "apt-get update && apt-get install -y iputils-ping"
  }
  

  Note: Heroku allows this, but remember dynos are ephemeral—any changes made after the build will be lost when the dyno restarts.

2. Your Core Goal: Remote Execution of a .exe File #

This is a key constraint to address: Heroku's default runtime is Linux-based, and Windows .exe files can't natively run on Linux. Here are your viable options:

• Switch to a Windows-compatible platform: If you need to run the original .exe as-is, use a platform that supports Windows containers or virtual machines, like Azure App Service (Windows plan), AWS Elastic Beanstalk (Windows environment), or a dedicated Windows server.
• Use Wine (Linux Windows Compatibility Layer): You can install Wine on Heroku to run simple .exe files. Add this to your postinstall script:

  "postinstall": "apt-get update && apt-get install -y wine"
  

  Then run your executable with:

  getAsync('wine your-program.exe').then(data => { res.send(data); });
  

  Caveat: Wine doesn't support all Windows programs, and performance/stability might be inconsistent for complex apps. Also, dyno restarts will require re-installing Wine each time.
• Port the .exe to cross-platform: If your .exe was built with a framework like .NET, you can recompile it as a .NET Core/5+ cross-platform binary, which runs natively on Linux (and thus works seamlessly on Heroku).

内容的提问来源于stack exchange，提问作者Rohit Kumar