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amblador
Asked: 2020-12-23 07:02:36 +0800 CST 2020-12-23 07:02:36 +0800 CST

How to automatically resume a nodeJs server in production after restarting the cloud server

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I have been looking for the best way to make a cloud server with Ubuntu when it restarts, or if it crashes for any reason and then gets up again, the nodeJs server that I have running on it automatically resumes.

To keep node running I do it with Forever, and to do what I'm asking about, I've found two ways:

  1. Crontab:

Using Crontab as follows:

$ crontab -u myuser -e

and in the editor that opens by adding the following line

@reboot /usr/local/bin/forever start /your/path/to/your/app.js
  1. Adding file to $ cd /etc/init.d

Add file and change permissions as follows:

$ cd /etc/init.d
$ sudo nano nodeapps

in the editor where nodeapp is created we put the following line:

sudo forever start /ruta/al/script/principal/de/la/app.js

We give execution permissions:

$ sudo chmod +x nodeapps

and add the script to boot:

$ sudo update-rc.d nodeapps defaults

Well, my question is which of these ways would be more stable, or if you have any other better way to do it?

ubuntu

1 Answers

  1. Best Answer

    This is done with PM2 which is the process manager for Nodejs. First you install it:

    $ npm install pm2 -g

    Once installed you can start your app.js with PM2 (from the folder where app.js is located)

    $ pm2 start app.js

    With your processes running, started by PM2, you can now automatically generate the corresponding script, without having to worry about programming, since PM2 will generate it for you. To do this we have the following command:

    $ pm2 startup

    Finally you save this process so that every time your machine restarts app.js does too:

    $ pm2 save

    And ready. You can now reboot your machine and everything will work

    Some PM2 commands that will be useful to you:

    pm2 show 0 [o el número de procesos PM2,  Para ver "gráficamente" tu proceso]
pm2 stop app.js [Para detener el servicio]
pm2 restart app.js [Para reiniciar el servicio]
pm2 reload app.js [Para recargar el servicio]
pm2 delete app.js [Para eliminar el servicio]
pm2 logs [Para ver el log de todos los servicios]
pm2 monit [Para monitorear tus servicios]

    The system looks more or less like this:

    enter image description here:

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