Completely new to heroku, profiles and node.js. I'm running Parse Server hosted on Heroku and I'm trying to get kue running in order to do scheduled jobs.
To achieve that I need to add a worker. And to do that, I need a Procfile. But I don't know what to put in it.
This seems to work fine :
web: node index.js
worker: node queue.js
Where index.js is the index.js file of parse server and I have my queue related code in queue.js. Hope it'll help !
Related
I'm trying to run Heroku applications locally via 'heroku local,' but a missing module error is occurring in the Heroku CLI. Is this a Heroku bug that just needs to be reported or is there something wrong with how things have been setup on my machine (mac)? Any suggestions are appreciated.
In order to ensure my application isn't the problem, I've been debugging this issue with the node application Heroku provides in its getting started guides. Meaning, it already has a Procfile that can be run using default settings.
Things I've tried:
Re-install node modules for both application and CLI
Re-install the Heroku CLI
Here's the error:
node-js-getting-started [master] :> heroku local
Error: Cannot find module '../../load-foreman-procfile'
at Object.<anonymous> (/usr/local/Cellar/heroku/7.26.1/libexec/node_modules/#heroku-cli/plugin-local/lib/commands/local/index.js:5:18)
The file for the route above requires a 'load-foreman-procfile' like so:
const Procfile = require('../../load-foreman-procfile');
That require path doesn't lead to a to file by that name. In fact, this is the only reference to 'load-foreman-procfile' I can find in '/usr/local/Cellar/heroku/7.26.1'.
Rather than the error code above, I would expect heroku local to yield a running local server started via my Procfile.
I got the same error running heroku-cli v7.26.0. I switched to their edge channel (currently v7.26.2) and heroku local worked for me after that.
like #sophon mentioned - updating from v7.26.0 to v7.26.2 solved this for me. heroku update on mac did the trick.
thanks for taking time to help me
im deploying a nodejs express js project
these are the steps that i have done:
1- change the port to: process.env.PORT
code:
const PORT = process.env.PORT || 9000;
app.listen(PORT , function() {
console.log('Application is listening on 9000');
});
2- create Procfile with: web: node server.js
3- make sure in package json the npm start command points to "node path/server.js"
the server works locally
4- important note: I am sending an AJAX request from my front end to the server to get data
I have read on you documentation that i should add 0.0.0.0
$.ajax({
url: "0.0.0.0/hotels",
cache: false,
type: 'GET',
success: function(result) {
bla bla ....
}
});
also i have tried to add the url of heroku the one i get after creating
thanks in advance
have a great day
did not solve it yet but i organized some helpful heroku commands
useful commands
git remote -v
git remote rm heroku
heroku create
git push heroku master
heroku ps:scale web=1
heroku open
heroku logs --tail
heroku run bash
Your code there looks fine (except 0.0.0.0 -- just use a relative path like /). I would ensure you've actually pushed the changes you have there. If you run heroku run bash, do you see your Procfile? When you run node server.js in that environment, does it run successfully?
I've seen Heroku customers get stuck on an issue like this, when the reality is that the code they have locally wasn't properly sent to Heroku.
Hello #jmccartie thank you for replying but it still does not work
could it be the static __dirname? im starting to question every part of the code :D
I changed the path and just to make sure i understood correctly
it used to be : "http://localhost:9000/data/hotels"
now is: "/data/hotels"
would you mind taking a look at my code?
just double check the parts i mentioned
https://github.com/hibaAkroush/herokuNode
i will name the files to make it easier for you
1- Procfile in the root
2- server in server/index.js line 24
3- the front end (where im sending an ajax get request) client/home.js line 6
4- packagejson line 10: "start": "node server/index.js"
thanks
ok i fixed it ...
wohoo!
not sure which thing i made fixed it
but what i did was:
1- I moved the server to the root and of course changed the code a bit so it would still work than i tested it locally to make sure
2- pushed on github
3- added ./ to procfile so it became
web: node ./index.js
instead of web: node index.js
thanks everyone !
I created a new Node.js app on Bluemix this morning and downloaded the boilerplate code. I worked on it locally and then pushed it up. On Bluemix, it refuses to start. The error according to the logs is:
Instance (index 0) failed to start accepting connections
So I Googled for that, in every case where I found the result, the answer was that my application was trying to use a specific port instead of letting Bluemix set it.
Ok, but I'm setting the host/port with the exact code the boilerplate uses:
var appEnv = cfenv.getAppEnv();
// start server on the specified port and binding host
app.listen(appEnv.port, function() {
// print a message when the server starts listening
console.log("server starting on " + appEnv.url);
});
So if this is incorrect, it means the code Bluemix told me to download itself is incorrect as well, and I can't imagine that is the issue.
To identify whether cfenv is at fault, I've tested that piece of code with a number of more complex Node.js apps I have, and they work perfectly on Bluemix.
That message can also come when an application you've deployed to Bluemix fails to start at all. Here's a few things you can do to troubleshoot your Node.js application on Bluemix.
Tail logs in another terminal while pushing with "cf logs
". Inspect logs after the failure to see if something
failed during the staging process.
Check that your start command in one of two recommended places, scripts.start in package.json or in a Procfile with web: node <start-script>.
Check that your application works locally. First (optional), create a .cfignore file with "/node_modules" in it, so that when you push the app to Bluemix, CF CLI doesn't push your entire folder of node_modules (as they will be installed dynamically). Next, wipe out your node_modules directory and do an npm install --production followed by npm start (or your custom start command). This is what Bluemix does when trying to start your application, so you should double check that it works locally.
Finally, try bumping up your memory, although this is very unlikely that this is why your application fails to start.
There is literally no tutorial about using Heroku Scheduler with Node.js. Assume that I have a function called sayHello() and I would like to run it every 10 mins. How can I use it in controller. In ruby you write rake function_name() however no explanation made for Node. Can I write '/sayHello' or I should do extra configuration?
Create the file <project_root>/bin/say_hello:
#! /app/.heroku/node/bin/node
function sayHello() {
console.log('Hello');
}
sayHello();
process.exit();
Deploy to Heroku and test it with $ heroku run say_hello then add it to the scheduler with task name say_hello.
Explanation
Take say_hello.js as an example of a Node.js script that you would normally run using $ node say_hello.js.
Turn it into a script by
removing the .js ending
inserting the 'shebang' at the top: #! /app/bin/node [1][2]
moving it into the bin directory [3]
[1] Read about the shebang on Wikipedia.
[2] The node executable is installed in app/bin/node on Heroku. You can check it out by logging into bash on Heroku with $ heroku run bash then asking $ which node.
[3] Heroku requires scripts to be placed in the bin directory. See Defining Tasks in the Heroku Dev Center.
I agree that the Heroku documentation for scheduling tasks is not very clear for anything other than Ruby scripts. I managed to work it out after some trial and error.
A better approach is to define your schedule file called for example worker.js with following content:
function sayHello() {
console.log('Hello');
}
sayHello();
and then in the heroku schedule, you just write node worker like you define it in the Procfile and that's all!
Christophe's answer worked for me until I needed to pass a parameter to the script, at which point it failed. The issue is that node should not be specified in the task. Here is how exactly to get it working:
In your Procfile, define a process type for your script. See below for a typical Procfile with a web process and, for running "scheduled_job.js", a second process type imaginatively named "worker".
web: node app.js
worker: node scheduled_job.js
In the Heroku scheduler's Task column, just enter the name of the process type ("worker" in this example) with or without parameters. Don't enter 'node' before it. Heroku shows a dollar sign in front of it, so examples of a valid setup would be $ worker (run without arguments) or $ worker 123 abc (to execute scheduled_job.js with arguments "123" and "abc")
I am confused that nobody tried:
$ heroku run node yourScript.js
So put this in Heroku Scheduler
node yourScript.js
Worked for me.
PS: be sure to import everything your script needs.
Following steps work in my situation.
In the root folder add worker.js file.
In worker.js. Write an simple function, like above.
function sayHello() {
console.log('Hello');
}
sayHello();
Go to heroku Scheduler add-ons. Click 'add new job' and type 'worker' in the field. Then set time interval and click save.
Here are something should notice
After update works setting.If using above example, you can use heroku run node worker.js to check if it work. It should be show 'Hello' in your terminal.
I use express-babel starter for my node.js project.
Thnks so much for the previous answers here.
I found the following worked for me where feed.js is the script to run as a job on Heroku.:
<PROJECT_ROOT>/bin/feed.js
The contents of feed.js start with:
#!/usr/bin/env node
async function mediumFeed() {
await fetch('https://medium.com/feed/stokedinfluence')
And end with:
}
mediumFeed();
And on Heroku the job is defined as node bin/medium_feed.js:
To run the node js script locally feed.js you can use from the root of your project directory node bin/feed.js and to run via heroku you can use heroku run feed.js --app <APP_NAME_NOT_PIPELINE_NAME>. When using heroku command, this will run the job from the server where as running node bin/feed.js will run locally. Run locally to test and verify the code works, once deployed verify it works with the heroku run... command
So, I'm currently following this tutorial: https://devcenter.heroku.com/articles/nodejs to start a simple Node.js app. I've got to the part where foreman is used to run the app locally (under Declaring process types with Procfile), and I'm getting an error telling me that the Procfile does not exist. My Procfile is in the same directory as my code, etc. All of the steps up till now have been fine. I skipped past this part in the tutorial to try and run the application on Heroku, but this line heroku ps:scale web=1 under Visit your application tells me that there is "No such type as web"... I'm using Windows to develop my app. Any help would be much appreciated. :-)
EDIT: web: node web.js is the contents of the Procfile, and I'm following the tutorial so I assume it's being committed... could you check the tutorial please and tell me if it is?
I had also received the Procfile does not exist error. The issue with mine was that I had left the '.txt' extension on the file. Once I removed the file extension and ran the foreman start it worked perfectly, hope this help =)