Vue js version 2.5.16 will automatically detect an available port

Every time I run the npm run dev command in Vue.js, a new port is automatically selected for the development build. It seems to ignore the port specified in the config/index.js file.

port: 8080, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined

Although I understand the comment about port selection, I have also tried changing the port in the build/webpack.dev.conf.js file

devServer: {
    clientLogLevel: 'warning',
    historyApiFallback: {
      rewrites: [
        { from: /.*/, to: path.posix.join(config.dev.assetsPublicPath, 'index.html') },
      ],
    },
    hot: true,
    contentBase: false, 
    compress: true,
    host: HOST || config.dev.host,
    port: 8080,
    open: config.dev.autoOpenBrowser,
    overlay: config.dev.errorOverlay
      ? { warnings: false, errors: true }
      : false,
    publicPath: config.dev.assetsPublicPath,
    proxy: config.dev.proxyTable,
    quiet: true, 
    watchOptions: {
      poll: config.dev.poll,
    }
  },

Unfortunately, this change did not resolve the issue. I need my vue app to always listen on a specific port that I specify. Any guidance on how to achieve this would be greatly appreciated.

I have already searched for solutions but have not found anything that works for me. Related question

Answer №1

When Vue detects that the current port is busy, it will automatically switch to a new port. To check if the port is already in use, follow these steps:

Determine if port 8080 is being used:

sudo netstat -lpn |grep :'8080'

Terminate the process:

kill -9 <PID>

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