Node.js host on OpenShift keeps "Service Temporarily Unavailable" - node.js

I am trying out to host a node.js project on Openshift, here is my package.json:
"scripts": {
"start": "node index.js"
},
"main": "index.js",
"dependencies": {
"express": "^4.13.3",
"formidable": "^1.0.17"
},
"devDependencies": {},
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node index.js"
},
...
and here is my index.js
var express = require('express');
var app = express();
var http = require('http');
app.set('port', process.env.OPENSHIFT_NODEJS_PORT || process.env.PORT || 8080);
app.set('ip', process.env.OPENSHIFT_NODEJS_IP || "127.0.0.1");
app.get('/', function(req,res){
res.send("Hello World");
});
http.createServer(app).listen(app.get('port') ,app.get('ip'), function () {
console.log("✔ Express server listening at %s:%d ", app.get('ip'),app.get('port'));
server();
});
What am I missing and how can I successfully see the expected "Hello World" message? Thanks!

I don't see anything wrong with your could, and I bet “Service Temporarily Unavailable” means exactly that, in this case. Simply try again later after the scheduled maintenance.
Also, check the scheduled maintenances at http://status.openshift.com/ or #openshift_ops

Related

Heroku error H10 when deploying my Node.js app

I've been working to deploy my app to Heroku but keep running into an H10 error. The app works locally but no luck deploying to Heroku.
Here is the index.js:
import express from 'express'
import 'dotenv/config'
import router from './routes/index.js'
import morgan from 'morgan'
const app = express()
const port = process.env.PORT || 5000
app.use('/public', express.static('public'))
app.use(express.urlencoded({ extended: false }))
app.use(express.json())
app.use(morgan('dev'))
app.use('/', router)
app.listen(process.env.PORT || port)
Here is my Procfile:
web: node index.js
Here is the package.json:
{
"name": "node-sso-example-app",
"version": "1.0.0",
"description": "Example Node.js SSO App using WorkOS",
"main": "index.js",
"type": "module",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node index.js"
},
"author": "WorkOS",
"dependencies": {
"express": "^4.18.1",
"ejs": "^3.1.8",
"router": "^1.3.7",
"dotenv": "^16.0.1",
"#workos-inc/node": "^2.11.0",
"morgan": "^1.10.0",
"cookie-parser": "^1.4.6",
"express-session": "^1.17.2",
"http-errors": "~1.6.3"
},
"devDependencies": {
"nodemon": "^2.0.19"
},
"engines": {
"node": "^16.17.0"
}
}
I'm stuck at this point and have read through what feels like every Stackoverflow question on this same error with no luck.
i'm new to nodejs and heroku but i was facing the same problem H10.
It is probably related to ports.
Try to remove this line completely
const port = process.env.PORT || 5000
and add this for index.js (I believe you can use any port and Heroku can manually allocate a different port
//start server
app.listen(process.env.PORT || 3000, function(){
console.log("Express server listening on port %d in %s mode", this.address().port, app.settings.env);
});
Or keep const port, but use this instead:
app.listen(port, () => {
console.log(`server started on port ${port}`);
})

Node.js in Heroku

I am hosting my very simple nodejs server in Heroku. But, when I try it, it returns this error:
Application error
An error occurred in the application and your page could not be served. If you are the application
owner, check your logs for details. You can do this from the Heroku CLI with the command`
Here's the server.js:
const express = require("express");
const cors = require("cors");
const PORT = process.env.PORT || 80;
const server = express();
server.use(cors());
server.get("/", (req, res) => {
const INDEX = "/index.html";
res.sendFile(INDEX, { root: __dirname });
});
server.get("/test", (req, res) => {
res.send("test Page");
});
server.listen(PORT, () => console.log(`listening on port ${PORT}`));
package.json:
{
"name": "express-heroku",
"version": "1.0.0",
"description": "",
"main": "server.js",
"engines": {
"node": "15.11.x"
},
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node server.js"
},
"author": "",
"license": "ISC",
"dependencies": {
"express": "^4.17.1",
"mongoose": "^5.11.19"
},
"devDependencies": {
"nodemon": "^2.0.7"
}
}
Don't know what the reason is, but, when I try this in the localhost it works perfectly!
The full error on Heroku CLI:
Any help is greatly appreciated !
Create a ProcFile:
Inside the ProcFile add web: node index.js
Doing this, you are telling heroku to run your server, with node.

How to deploy node app on openshift and run it?

Just created a very simple hello world app using node:
var express = require('express');
var app = express();
app.get('/', function (req, res) {
res.send('Hello World!');
});
var server_port = process.env.OPENSHIFT_NODEJS_PORT || 8080
var server_ip_address = process.env.OPENSHIFT_NODEJS_IP || '127.0.0.1'
app.listen(server_port, server_ip_address, function () {
console.log( "Listening on " + server_ip_address + ", port " + server_port )
});
and it works as it is expected in my local machine,
put that on github and deployed it on openshift, pod created and server running fine:
but when I browse the route which I could find it in Application>>routes menu it says:
Application is not available
The application is currently not serving requests at this endpoint. It may not have been started or is still starting.
I guess I'm using the latest version of openshift since just created an account.
I'm expecting it to show me the Hello world!
update1:
here is my package.json:
{
"name": "npmtest",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node index.js"
},
"author": "",
"license": "ISC",
"dependencies": {
"express": "^4.16.2"
}
}
Your application server IP address needs to be 0.0.0.0. So you either specify an environment variable for that, or hard code it.
have you configure main file in package.json
and maybe you need to get port dynamically from the environment variables check below link for openshift sample
https://github.com/openshift/nodejs-ex

App engine nodejs deployment error

I am trying some hands-on on Google Cloud Platform, App Engine in specific.
For the same, I've created a simple nodejs application which just send Hello Wold message in the response.
But I am unable to access the endpoint and getting the below error
below are my files:
aap.yaml
runtime: nodejs
env: flex
index.js
'use strict';
const http = require('http');
const port = 443;
const requestHandler = (request, response) => {
console.log(request.url);
response.end('Hello Node.js Server!');
}
const server = http.createServer(requestHandler);
server.listen(port, (err) => {
if (err) {
return console.log('something bad happened', err)
}
console.log(`server is listening on ${port}`)
});
package.json
{
"name": "test-pro-for-gcm",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "node index.js",
"deploy": "gcloud app deploy",
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC"
}
UPDATE 1
In the GCP log, 16:31:59.000 server is listening on 443
The port that will receive HTTP requests is 8080.
Use the PORT environment variable in your code to make it compatible with the App Engine environment: const port = process.env.PORT || 443;

Openshift node app error when restarting

I have a node/socket.io chat app hosted on openshift, and while it starts correctly if i ssh into the server and do "node main.js" (where main.js is the server script that starts the chat), I can't start the app on the server by web interface, where it would go on automatically; If i just start the app by ssh, it would stop working as soon as i exit the terminal.
I get this error when starting the app by the web interface:
Starting Node.js application...
Application is already stopped.
Warning! Could not start Node.js application!
Failed to execute: 'control restart' for /var/lib/openshift/57003fbe7628e1491d00011e/nodejs
In case it's relevant, my package.json file is
{
"name": "rainychat",
"version": "1.0.0",
"description": "rainychat, my chat app",
"main": "main.js",
"dependencies": {
"express": "^4.13.4",
"socket.io": "^1.4.5",
"validator": "^5.1.0"
},
"devDependencies": {},
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "JG",
"license": "ISC"
}
And here you can see the files of the app by ftp:
I can't decode what that error means...
My main.js code
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
app.get('/', function (req, res) {
res.sendFile(__dirname + '/chat.html'); // /home/redadmin/public_html/rainychat.com
console.log('enviado');
});
app.set('port', process.env.OPENSHIFT_NODEJS_PORT || 8080);
app.set('ip', process.env.OPENSHIFT_NODEJS_IP || '127.0.0.1');
http.listen(app.get('port'), app.get('ip'), function () {
console.log('Listening on port ' + app.get('port'));
});
//... More code
If you're creating a new Node project, start with npm init to create the package.json file. You can add the --auto option to give it safe defaults.
Remember, the JSON file must be valid JSON, so test it with jsonlint or a tool like an online validator.
Any dependencies your project has should be spelled out in the package file. This is done automatically with things like npm install express --save.

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