I have looked at similar questions and not been able to solve this problem with what I found. I initially followed a YouTube tutorial on how to deploy a Node.js App to Heroku. After trying and failing, I began troubleshooting and could not fix the problem.
I then followed the instructions on Heroku's website for deploying a Node.js application here: https://devcenter.heroku.com/articles/deploying-nodejs and I found I seem to have done all the steps correctly. I was just missing the node version in the package.json which I have now added.
Here is how I have connected my Node.js app:
image of Heroku application dashboard
And here is the connected Github repo: https://github.com/AmeenIzhac/food-and-flow-backend
You can see in the repo that my port is specified correctly:
const port = process.env.PORT || 4000;
I then tried running the app locally on the command line with:
heroku local web
and this worked as you can see my application running on port 5000:
App running locally on port 5000
However when I press "Open app" in Heroku, I just see this:
Heroku hosted app fails to get /
I feel like I have done everything correctly but it doesn't seem to work. Any help to get it working would be much appreciated.
You need a procfile. What is the heroku error in heroku logs --tail?
my heroku deployment only works when my local host is running.
I havent checked if it works on other computers - but it doesnt work on my phone for example.
So far I was only able to run it on my PC - it works on both localhost and the site deployed to Heroku (link here to it).
When I had the server down ( node index.js wasnt running ), neither heroku nor the localhost servers were working.
Then when I turned it back on - both localhost and heroku serves started working. 👍
What could be causing this ?
I have deployed my website to a Digital Ocean droplet (Ubuntu 20.04 server).
Everything was working fine. Today, I did some changes to the website in my local machine. So I pushed the changes to GitHub and then cloned the GitHub repo again to the server. Then, I installed the dependencies and restarted PM2.
Now, when I visit my site https://sundaray.io, I get the following error.
The following is the error log.
How can I fix the error?
Simple meaning is
No HTTP server response, your Node Http server is not answering requests.
502 gateway mean server and Nginx is getting your request but there is issue with upstream.
you can use the command to show the logs of pm2
pm2 show
the application might be crashing or internal server 500 error.
Anyone willing to help with a Heroku Deployment?
When I run my local repo the server works great but once I deploy it on Heroku I get a 404 Error.
I am using Node.js Express Server.
The server console is suppose to generate: Listening on port 5000!
The error I get instead is: {"error":{"message":"Error not found in app.js"}}
Git Hub Repo
https://github.com/instant-help/instant-help-backend
Deployed Repo
https://thawing-river-10076.herokuapp.com/
I'm trying to deploy a PeerJS server on Azure. On my kudu console, running
node peerjs --port 9000
returns
Started PeerServer on ::, port: 9000, path: / (v. 0.2.8)
However, when I try to connect to the server from my client code, I get a 404. Going directly to appname.azurewebsites.net/peerjs/id in my browser also returns a 404.
I see inside their package.json file, they run
bin/peerjs --port ${PORT:=9000}
instead of just passing in 9000 directly; I assume this is an environment variable. However, trying to run this on Azure gives
Error: Error: listen EACCES ${PORT:=9000}
which I assume means Azure doesn't recognize ${PORT:=9000} as a valid port.
I know for a fact there's nothing wrong with my client side code because a) I copied it directly from PeerJS's website, and b) everything works correctly when I deployed PeerJS to Heroku. It's only not running on Azure.
Other things I've tried: I edited peerjs in the bin folder to use process.env.PORT instead of what's passed in via the command line, but that didn't work, giving the same EACCES error. When I tried to console.log(process.env.PORT), I got undefined. None of my Google searches have turned up any solutions, although this person (Custom PeerJs Server giving ERR_CONNECTION_TIMED_OUT) seems to have a similar error, not on Azure.
Azure App Service doesn't allow us to listen on a customer port. We need to use process.env.PORT instead. See Listen additional port Microsoft Azure Nodejs.
Azure App Service (on Windows platform) runs on Microsoft IIS. So we need to put the app files to its virtual directory (D:\home\site\wwwroot) and no longer need to manually run the app via the Kudu console.
In this case, you first need to install the library under app's root:
npm install peer
And then create a file named index.js or app.js with following content and put it to /wwwroot folder:
var PeerServer = require('peer').PeerServer;
var server = PeerServer({port: process.env.PORT, path: '/'});
As #Mikkel mentioned in a comment, PeerServer uses WebSocket protocol, so Web Sockets should be enabled in the Azure portal like this:
You also need to check out this post to add a web.config file for your app if it has not been created yet.
This will be a firewall problem... You will need to open port 9000 in your Azure settings panel.
From the machine itself, open up a browser to http://localhost:9000/ or http://localhost:9000/peerjs and you should see the standard Peerjs server JSON output.
Or if you only have command line, try curl http://localhost:9000/ or http://localhost:9000/peerjs