Heroku node js error Web process failed to bind to PORT within 60 seconds of launch

Question

I have my first node js app  runs fine locally  - but I am unable to deploy it via heroku  first time w  heroku as well   The code is below  SO doesn t let me write so much code  so I would just say that the running the code locally as well within my network shows no issue    var http   require  http     var fs   require  fs     var path   require  path      http createServer function  request  response         console log  request starting for         console log request        var filePath         request url      if  filePath                  filePath      index html        console log filePath       var extname   path extname filePath       var contentType    text html       switch  extname            case   js               contentType    text javascript               break          case   css               contentType    text css               break             path exists filePath  function exists             if  exists                fs readFile filePath  function error  content                    if  error                        response writeHead 500                       response end                                      else                       response writeHead 200     Content-Type   contentType                         response end content   utf-8                                                        else               response writeHead 404               response end                           listen 5000     console log  Server running at http   127 0 0 1 5000       Any idea

User · Answer

If  like me  you re configuring Heroku to run a script from your package json file on deploy  make sure you haven t hard-coded the value of PORT in that script  If you do  you ll end up like me and spend an hour trying to figure out why you re getting this error

User · Answer

In my case I had two issues     1  no listener at all because of running app from another entry file and this run script was deleted from package json  scripts     2  Case sensitive problem with  Sequelize  instead of  sequelize

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Even if I m too late but this might help someone who will get stuck too in the coming days  I faced the same issue but my problem was running many commands with npm start  I was running create tables and insert data before start the app and make 10 sec exceeds before running  So I removed those commands and problem solved  Thanks

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In my case  neither the port nor the host was the problem  The index js was divided into 2 files  server js     server js const express   require  express   const path   require  path    const app   express    app use express static path resolve   dirname   public         and all the other stuff module exports   app    app js const app   require    server    const port   process env PORT    3000  app listen port   0 0 0 0        gt        console log  Server is running s on port      port        from package json we ran node app js   Apparently that was the problem  Once I combined the two into one file  the Heroku app deployed as expected

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I had same issue but with express and apollo-server  The solution from here      The only special consideration that needs to be made is to allow   heroku to choose the port that the server is deployed to  Otherwise    there may be errors  such as a request timeout       To configure apollo-server to use a port defined by Heroku at runtime    the listen function in your setup file can be called with a port   defined by the PORT environment variable     gt  server listen   port  process env PORT    4000    then    url      gt      gt  console log  Server ready at   url

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From the heroku bash process  pass down the value of  PORT to your node app using an options parser like yargs     Here is an example of how you might do that   On the scripts object  inside package json  add a start method  node server --port  PORT    In your server file  use yargs to get the value from the port option  --port  PORT  of the start method   const argv   require  yargs   argv  const app   require  express       const port   argv port    8081   app listen argv port      gt       console log  Probably listening to heroku  PORT now    argv port      unless  PORT is undefined  in which case you re listening to 8081        Now when your app starts  it will bind to the dynamically set value of  PORT

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While most of the answers here are valid  for me the issue was that I was running long processes as part of npm run start which caused the timeout  I found the solution here and to summarize it  I just had to move npm run build to a postinstall task  In other words  I changed this   quot start quot    quot npm run build  amp  amp  node server js quot   to this   quot postinstall quot    quot npm run build quot    quot start quot    quot node server js quot   Come to think of this  it totally makes sense because this error  which used to appear occasionally  was becoming more and more common as my app kept growing

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My problem was that when deploying to heroku I got an error      Web process failed to bind to  PORT within 60 seconds of launch   when running heroku logs --tail in the terminal  BUT the application would run as expected when I ran the server locally   I had this in my index js file  server file   const PORT   process env port    4000  app listen PORT       gt      console log  Server listening on port   PORT         But should have had this  const PORT   process env PORT    4000  app listen PORT       gt      console log  Server listening on port   PORT         Use process env PORT  not process env port  because port is not the same as PORT obviously   Credit to gprasant

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At of all the solution i have tried no one work as expected  i study heroku by default the  env File should maintain the convention PORT  the process env PORT  heroku by default will look for the Keyword PORT    Cancel any renaming such as APP PORT  instead use PORT  in your env file

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It s worth mentioning that if your code doesn t specify a port  then it shouldn t be a web process and probably should be a worker process instead   So  change your Procfile to read  with your specific command filled in    worker  YOUR COMMAND   and then also run on CLI    heroku scale worker 1

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For those that are passing both a port and a host  keep in mind that Heroku will not bind to localhost   You must pass 0 0 0 0 for host   Even if you re using the correct port  We had to make this adjustment     port  as described above  and host are both wrong const host    localhost   const port   3000     use alternate localhost and the port Heroku assigns to  PORT const host    0 0 0 0   const port   process env PORT    3000    Then you can start the server  as usual   app listen port  host  function       console log  Server started                 You can see more details here  https   help heroku com P1AVPANS why-is-my-node-js-app-crashing-with-an-r10-error

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The error happens when Heroku failed to bind the port or hostname at server listen port   host    backlog    callback     What Heroku requires is  listen process env PORT  or  listen process env PORT   0 0 0 0    So more generically  to support other environments  use this   var server port   process env YOUR PORT    process env PORT    80  var server host   process env YOUR HOST     0 0 0 0   server listen server port  server host  function         console log  Listening on port  d   server port

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I had same issue while using yeoman s angular-fullstack generated project and removing the IP parameter worked for me   I replaced this code  server listen config port  config ip  function        console log  Express server listening on  d  in  s mode   config port  app get  env           with   server listen config port  function        console log  Express server listening on  d  in  s mode   config port  app get  env

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I Use ReactJs  If you want upload to heroku add this in your webpack config js Because if not add you will have error  Error R10  Boot timeout  - gt  Web process failed to bind to  PORT within 60 seconds of launch    webpack config js add code like that  const HtmlWebPackPlugin   require  quot html-webpack-plugin quot    const MiniCssExtractPlugin   require  quot mini-css-extract-plugin quot    var server port   process env YOUR PORT    process env PORT    5000  var server host   process env YOUR HOST     quot 0 0 0 0 quot    module exports       module        rules                    test     js            exclude   node modules           use              loader   quot babel-loader quot                                     test     css            use   MiniCssExtractPlugin loader   quot css-loader quot                        devServer        disableHostCheck  true      contentBase   quot    dist quot       compress  true      inline  true      port  server port      host  server host         plugins        new HtmlWebPackPlugin         template   quot   src index html quot         filename   quot index html quot              new MiniCssExtractPlugin         filename   quot  name  css quot         chunkFilename   quot  id  css quot

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I had the same issue because I didn t define Procfile  Commit a text file to your app s root directory that is named Procfile without a file extension  This file tells Heroku which command s  to run to start your app  web  node app js

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Heroku dynamically assigns your app a port  so you can t set the port to a fixed number  Heroku adds the port to the env  so you can pull it from there  Switch your listen to this    listen process env PORT    5000    That way it ll still listen to port 5000 when you test locally  but it will also work on Heroku   You can check out the Heroku docs on Node js here

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I realized that I don t need the port number in the request endpoint  so the endpoint was herokuapp com and not herokuapp com 5000   The listen   call can be without host and callback   server listen 5000

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I ve spent a lot of hours to find the root cause  and eventually I ve found that this timeout  60s  can be adjustable  Here you may change 60 second to 120 or even more  It works for me  hope will help anybody else

User · Answer

Restarting all dynos in heroku did the trick for me

User · Answer

change this line app listen port    to app listen process env PORT   0 0 0 0     it will work

User · Answer

A fixed number can t be set for port  heroku assigns it dynamically using process env PORT  But you can add them both  like this process env PORT    5000  Heroku will use the first one  and your localhost will use the second one   You can even add your call back function  Look at the code below  app listen process env PORT    5000  function         console log  Server started

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Changing my listening port from 3000 to  process env PORT    5000  solved the problem

User · Answer

I had same issue I could resolved issue with replace  localhost  with IP which is  0 0 0 0

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I have the same issue but my environment variables are set well and the version of npm and node is specified in package json  I figured out it is because  in my case  Heroku needs  quot start quot  to be specified in package json     quot scripts quot          quot start quot    quot node index js quot       After adding this to my package json my node app is successfully deployed on Heroku

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While developing the application we need to define the PORT in the following way  const port   process env PORT    4000     PORT must be in caps  And while deploying the app to server add the following method  app listen port       gt     console info  quot Server started listening  quot         We can pass hostname as second parameter while running it in local  But while deploying it to server the hostname parameter should be removed  app listen port  hostName       gt      console info  Server listening at http     hostName    port

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In my case  I was using example from https   hapijs com   To fix the problem I replaced  server connection        host   localhost        port  8000        with   server connection       port  process env PORT    3000

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Edit package json        engines      node    5 0 0    npm    4 6 1           and Server js       var port   process env PORT    3000  app listen port   0 0 0 0   function     console log  Listening on Port 3000

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In my case  I was using Babel with the babel-plugin-transform-inline-environment-variables plugin  Apparently  Heroku does not set the PORT env variable when doing a deployment  so process env PORT will be replaced by undefined  and your code will fallback to the development port which Heroku does not know anything about

[node.js] Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)

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