I'm using PM2 to let the NodeJS (Express) run continuously. On my local machine, the following works in my packages.json:
"scripts": {
"start": "pm2 start ./bin/www"
}
After that, I use 'npm start' to run my app. This all works fine.
Now I want to deploy my app to Heroku. I added an Procfile with 'web: npm start'. After that I changed my packages.json a little bit to:
"scripts": {
"preinstall": "npm install pm2 -g",
"start": "pm2 start ./bin/www"
}
However, I get this error:
2018-02-22T19:51:23.861641+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
2018-02-22T19:51:23.862201+00:00 heroku[web.1]: Stopping process with SIGKILL
2018-02-22T19:51:24.007776+00:00 heroku[web.1]: Process exited with status 137
2018-02-22T19:51:24.046849+00:00 heroku[web.1]: State changed from starting to crashed
I have looked up many ways to solve this problem such as changing my Procfile to 'worker: node app.js' and running the command: '$ heroku scale web=0 worker=1'.
But I can't find out where the problem lies. I think it has something to do with the 'pm2'-module, because when I don't use that, my app works fine. However it crashes then after a short period of time. Hope that somebody can help me out.
"pm2 show www" shows this:
│ status │ online │
│ name │ www │
│ restarts │ 151 │
│ uptime │ 40s │
│ script path │ /Users/user1/Documents/Weview/app/bin/www │
│ script args │ N/A │
│ error log path │ /Users/user1/.pm2/logs/www-error-1.log │
│ out log path │ /Users/user1/.pm2/logs/www-out-1.log │
│ pid path │ /Users/user1/.pm2/pids/www-1.pid │
│ interpreter │ node │
│ interpreter args │ N/A │
│ script id │ 1 │
│ exec cwd │ /Users/user1/Documents/Weview/app │
│ exec mode │ fork_mode │
│ node.js version │ 8.9.1 │
│ watch & reload │ ✘ │
│ unstable restarts │ 0 │
│ created at │ 2018-02-22T20:22:53.688Z │
└───────────────────┴──────────────────────────────────────────────────────────────┘
Code metrics value
┌─────────────────┬────────┐
│ Loop delay │ 2.86ms │
│ Active requests │ 0 │
│ Active handles │ 4