Writing a test application in Node.js running on OpenShift and it currently will not start.
This is my code:
#!/bin/env node
var http = require('http');
var ip = process.env.OPENSHIFT_NODEJS_IP;
var port = process.env.OPENSHIFT_NODEJS_PORT;
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World\n');
}).listen(ip, port);
console.log('Server running');
I get the error
events.js:72
throw er; // Unhandled 'error' event
^
Error: listen EADDRINUSE
at errnoException (net.js:884:11)
at Server._listen2 (net.js:1003:19)
at listen (net.js:1044:10)
at Server.listen (net.js:1104:5)
at Object.<anonymous> (/var/lib/openshift/52854c6f4382ec071400051d/app-root/runtime/repo/server.js:11:4)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
DEBUG: Program node server.js exited with code 8
Which seems to mean I can't bind to the port. I've found various information on why this might be but none of it seems relevant - it all seems related to permissions but surely the point of process.env.OPENSHIFT_NODEJS_* is I have permission to bind to it?
It means some other process is using your port process.env.OPENSHIFT_NODEJS_PORT. EACCESS would mean permission denied, not EADDRINUSE. Try changing to unused ports like 8080. You can check used ports with :
netstat -tulpn
netstat -tulpn | grep :$OPENSHIFT_NODEJS_PORT //filter by your port
Related
Have tried do work out this simple code in cloud9
but it seems like some process is already located
on process.env.PORT and I can't seem to find it.
Have tried killing nodes searching for nodes.
And i'm not entirely sure how to connect to port like 3000 on cloud9. (localhost:3000)
Debugger listening on port 15454
events.js:141
throw er; // Unhandled 'error' event
^
Error: listen EADDRINUSE :::8080
at Object.exports._errnoException (util.js:870:11)
at exports._exceptionWithHostPort (util.js:893:20)
at Server._listen2 (net.js:1234:14)
at listen (net.js:1270:10)
at Server.listen (net.js:1366:5)
at Object.<anonymous> (/home/ubuntu/workspace/script.js:5:4)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
The code
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World\n');
}).listen(process.env.PORT);
I'm new to node.js and was trying to run the following training example for setting up a basic http server on my mac (OS X Yosemite 10.10.3):
var http = require("http");
http.createServer(function (request, response) {
request.on("end", function () {
response.writeHead(200, {
'Content-Type': 'text/plain'
});
response.end('Hello HTTP!');
});
}).listen(8080);
I get the following error when executing the code:
$ node http.js events.js:85
throw er; // Unhandled 'error' event
^ Error: listen EADDRINUSE
at exports._errnoException (util.js:746:11)
at Server._listen2 (net.js:1156:14)
at listen (net.js:1182:10)
at Server.listen (net.js:1267:5)
at Object. (/Users/sumankalyan/WebstormProjects/Node-Server/http.js:25:4)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.Module.runMain (module.js:501:10)
Not sure if this is a localhost config issue or something else. Any help much appreciated.
Another application is using the port 8080. You can run
lsof -i :8080
to see what it is. You can also just try another port.
I trying to view a static html page at localhost, but get the following error message:
events.js:72
throw er; // Unhandled 'error' event
^
Error: listen EACCES
at errnoException (net.js:901:11)
at Server._listen2 (net.js:1020:19)
at listen (net.js:1061:10)
at Server.listen (net.js:1135:5)
at Function.app.listen (/home/phil/xProgramming/AngJS/Project/node_modules/express/lib/application.js:536:24)
at Object.<anonymous> (/home/phil/xProgramming/AngJS/Project/server.js:6:5)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
I've tried killall, but I still get the same error message.
I new to Linux and am using Ubuntu 14.04
The EACCES error normally means that you are trying to bind to a port and failing. This is probably because you are trying to bind to port 80 without root permissions. Try running node with root permissions and it should work.
sudo node server.js
or
sudo nodejs server.js
Depending on how you have Ubuntu setup.
If this is a development environment instead of running as root you should use a port greater than 1024. Typically you will find people using port 3000 for node though 8000 and 8080 are also used. Here is how I normally do this when using Express.
var port = process.env.PORT || 3000;
app.listen(port, function() {
console.log("Listening on " + port);
});
Why do I get an error on my Amazon server when running my NodeJS app?
sudo node app.js
Error: listen EADDRINUSE
at errnoException (net.js:904:11)
at Server._listen2 (net.js:1042:14)
at listen (net.js:1064:10)
at Server.listen (net.js:1138:5)
at Object.<anonymous> (/home/ubuntu/www/app.js:65:38)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
Here is my code:
var app = express();
var server = http.createServer(app).listen(4000, function() {
console.log('Express HTTP server listening on port ' + app.get('port'));
});
https.createServer(credentials, app).listen(443, function() {
console.log('Express HTTPS server listening on port 443');
});
I think the problem is the 443 because when I delete the https.createServer "listen()" connection then everything works fine.
Thanks for your attention :)
You probably have another process running that's using this port (probably another instance of your app.
Use ps aux to see your running processes.
Use lsof -i | grep 4000 to see what's using this port.
I am a beginner programmer that is trying to learn node.js using the following tutorial site
http://www.nodebeginner.org/#hello-world
I got to the point where I was trying to set up the server but got an error with the below code
var http = require("http");
http.createServer(function(request, response) {
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("Hello World");
response.end();
}).listen(8888);
error:
events.js:72
throw er; // Unhandled 'error' event
^
Error: listen EADDRINUSE
at errnoException (net.js:884:11)
at Server._listen2 (net.js:1022:14)
at listen (net.js:1044:10)
at Server.listen (net.js:1110:5)
at Object.<anonymous> (/Users/.........../server.js:7:4)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
any help would be appreciated
EADDRINUSE means that address is in use.
Basically, you tried to start two servers at the same time that both use port 8888. You have to stop or kill one before starting another. The other server on port 8888 could be another process running your node script, or it could be something else in the system that serves content on port 8888.
Alternatively, you can get this if you don't let the socket settle for a few seconds after terminating the old server.
A more practical answer based on this great one.
Find out what is using port 8888 with this command:
lsof -i tcp:8888
You should get something like this:
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
node 86456 myName 13u IPv6 0xa6b50fb47c9c3c81 0t0 TCP *:ddi-tcp-1 (LISTEN)
Now that you know which process is in the way, KILL IT! Softly, like so:
kill -15 86456