Automatically start forever (node) on system restart

Question

I am using node's forever module to keep my node server running. Forever however terminates when there is a system restart. Is there any way I can automatically start the node server (with forever) when the system restarts?

Answer 1

I would suggest using crontab. It's easy to use.

How to

1. To start editing run the following replacing the "testuser" with your desired runtime user for the node process. If you choose a different user other than yourself, you will have to run this with sudo.

   $ crontab -u testuser -e
   

2. If you have never done this before, it will ask you which editor you wish to edit with. I like vim, but will recommend nano for ease of use.

3. Once in the editor add the following line:

   @reboot /usr/local/bin/forever start /your/path/to/your/app.js
   

4. Save the file. You should get some feedback that the cron has been installed.

5. For further confirmation of the installation of the cron, execute the following (again replacing "testuser" with your target username) to list the currently installed crons:

   $ crontab -u testuser -l 
   

Note that in my opinion, you should always use full paths when executing binaries in cron. Also, if the path to your forever script is not correct, run which forever to get the full path.

Given that forever calls node, you may also want to provide the full path to node:

@reboot /usr/local/bin/forever start -c /usr/local/bin/node /your/path/to/your/app.js

Further Reading

• crontab Man Page
• Ubuntu Cron HowTo

Answer 2

You can use forever-service for doing this.

npm install -g forever-service
forever-service install test

This will provision app.js in the current directory as a service via forever. The service will automatically restart every time system is restarted. Also when stopped it will attempt a graceful stop. This script provisions the logrotate script as well.

Github url: https://github.com/zapty/forever-service

NOTE: I am the author of forever-service.

Answer 3

1. Install PM2 globally using NPM

   npm install pm2 -g

2. Start your script with pm2

   pm2 start app.js

3. generate an active startup script

   pm2 startup

   NOTE: pm2 startup is for startting the PM2 when the system reboots. PM2 once started, restarts all the processes it had been managing before the system went down.

In case you want to disable the automatic startup, simply use pm2 unstartup

If you want the startup script to be executed under another user, just use the -u <username> option and the --hp <user_home>:

Answer 4

This case is valid for Debian.

Add the following to /etc/rc.local

/usr/bin/sudo -u {{user}} /usr/local/bin/forever start {{app path}}

• {{user}} replaces your username.
• {{app path}} replaces your app path. For example, /var/www/test/app.js

Answer 5

An alternative crontab method inspired by this answer and this blog post.

1. Create a bash script file (change bob to desired user).

vi /home/bob/node_server_init.sh

2. Copy and paste this inside the file you've just created.

#!/bin/sh

export NODE_ENV=production
export PATH=/usr/local/bin:$PATH
forever start /node/server/path/server.js > /dev/null

Make sure to edit the paths above according to your config!

3. Make sure the bash script can be executed.

chmod 700 /home/bob/node_server_init.sh

4. Test the bash script.

sh /home/bob/node_server_init.sh

5. Replace "bob" with the runtime user for node.

crontab -u bob -e

6. Copy and paste (change bob to desired user).

@reboot /bin/sh /home/bob/node_server_init.sh

Save the crontab.

You've made it to the end, your prize is a reboot (to test) :)

Answer 6

Copied answer from the attached question.

You can use PM2, it's a production process manager for Node.js applications with a built-in load balancer.

Install PM2

$ npm install pm2 -g

Start an application

$ pm2 start app.js

If you using express then you can start your app like

pm2 start ./bin/www --name="app"

Listing all running processes:

$ pm2 list

It will list all process. You can then stop / restart your service by using ID or Name of the app with following command.

$ pm2 stop all                  
$ pm2 stop 0                    
$ pm2 restart all               

To display logs

$ pm2 logs ['all'|app_name|app_id]

Answer 7

You need to create a shell script in the /etc/init.d folder for that. It's sort of complicated if you never have done it but there is plenty of information on the web on init.d scripts.

Here is a sample a script that I created to run a CoffeeScript site with forever:

#!/bin/bash
#
# initd-example      Node init.d 
#
# chkconfig: 345 
# description: Script to start a coffee script application through forever
# processname: forever/coffeescript/node
# pidfile: /var/run/forever-initd-hectorcorrea.pid 
# logfile: /var/run/forever-initd-hectorcorrea.log
#
# Based on a script posted by https://gist.github.com/jinze at https://gist.github.com/3748766
#


# Source function library.
. /lib/lsb/init-functions


pidFile=/var/run/forever-initd-hectorcorrea.pid 
logFile=/var/run/forever-initd-hectorcorrea.log 

sourceDir=/home/hectorlinux/website
coffeeFile=app.coffee
scriptId=$sourceDir/$coffeeFile


start() {
    echo "Starting $scriptId"

    # This is found in the library referenced at the top of the script
    start_daemon

    # Start our CoffeeScript app through forever
    # Notice that we change the PATH because on reboot
    # the PATH does not include the path to node.
    # Launching forever or coffee with a full path
    # does not work unless we set the PATH.
    cd $sourceDir
    PATH=/usr/local/bin:$PATH
    NODE_ENV=production PORT=80 forever start --pidFile $pidFile -l $logFile -a -d --sourceDir $sourceDir/ -c coffee $coffeeFile

    RETVAL=$?
}

restart() {
    echo -n "Restarting $scriptId"
    /usr/local/bin/forever restart $scriptId
    RETVAL=$?
}

stop() {
    echo -n "Shutting down $scriptId"
    /usr/local/bin/forever stop $scriptId
    RETVAL=$?
}

status() {
    echo -n "Status $scriptId"
    /usr/local/bin/forever list
    RETVAL=$?
}


case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    status)
        status
        ;;
    restart)
        restart
        ;;
    *)
        echo "Usage:  {start|stop|status|restart}"
        exit 1
        ;;
esac
exit $RETVAL

I had to make sure the folder and PATHs were explicitly set or available to the root user since init.d scripts are ran as root.

Answer 8

Use the PM2

Which is the best option to run the server production server

What are the advantages of running your application this way?

• PM2 will automatically restart your application if it crashes.

• PM2 will keep a log of your unhandled exceptions - in this case, in a file at /home/safeuser/.pm2/logs/app-err.log.

• With one command, PM2 can ensure that any applications it manages restart when the server reboots. Basically, your node application will start as a service.

ref: https://www.digitalocean.com/community/tutorials/how-to-use-pm2-to-setup-a-node-js-production-environment-on-an-ubuntu-vps

Answer 9

Forever was not made to get node applications running as services. The right approach is to either create an /etc/inittab entry (old linux systems) or an upstart (newer linux systems).

Here's some documentation on how to set this up as an upstart: https://github.com/cvee/node-upstart

Answer 10

crontab does not work for me on CentOS x86 6.5. @reboot seems to be not working.

Finally I got this solution:

Edit: /etc/rc.local

sudo vi /etc/rc.local

Add this line to the end of the file. Change USER_NAME and PATH_TO_PROJECT to your own. NODE_ENV=production means the app runs in production mode. You can add more lines if you need to run more than one node.js app.

su - USER_NAME -c "NODE_ENV=production /usr/local/bin/forever start /PATH_TO_PROJECT/app.js"

Don't set NODE_ENV in a separate line, your app will still run in development mode, because forever does not get NODE_ENV.

# WRONG!
su - USER_NAME -c "export NODE_ENV=production"

Save and quit vi (press ESC : w q return). You can try rebooting your server. After your server reboots, your node.js app should run automatically, even if you don't log into any account remotely via ssh.

You'd better set NODE_ENV environment in your shell. NODE_ENV will be set automatically when your account USER_NAME logs in.

echo export NODE_ENV=production >> ~/.bash_profile

So you can run commands like forever stop/start /PATH_TO_PROJECT/app.js via ssh without setting NODE_ENV again.

Answer 11

I wrote a script that does exactly this:

https://github.com/chovy/node-startup

I have not tried with forever, but you can customize the command it runs, so it should be straight forward:

/etc/init.d/node-app start
/etc/init.d/node-app restart
/etc/init.d/node-app stop

Answer 12

The problem with rc.local is that the commands are accessed as root which is different than logging to as a user and using sudo.

I solved this problem by adding a .sh script with the startup commands i want to etc/profile.d. Any .sh file in profile.d will load automatically and any command will be treated as if you used the regular sudo.

The only downside to this is the specified user needs to loggin for things to start which in my situation was always the case.

Answer 13

I tried lots of the above answers. None of them worked for me. My app is installed in /home and as user, not as root. This probably means that when the above mentioned start scripts run, /home is not mounted yet, so the app is not started.

Then I found these instructions by Digital Ocean:

https://www.digitalocean.com/community/tutorials/how-to-use-pm2-to-setup-a-node-js-production-environment-on-an-ubuntu-vps

Using PM2 as explained was very simple and works perfectly: My virtual servers had two physical crashes since - downtime was only about a minute.

Answer 14

complete example crontab (located at /etc/crontab) ..

#!/bin/bash

# edit this file with .. crontab -u root -e
# view this file with .. crontab -u root -l

# put your path here if it differs
PATH=/root/bin:/root/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin

# * * * * * echo "executes once every minute" > /root/deleteme

@reboot cd /root/bible-api-dbt-server; npm run forever;
@reboot cd /root/database-api-server; npm run forever;
@reboot cd /root/mailer-api-server; npm run forever;

Answer 15

I have found my own solution by using serve & npm as follows:

• Install serve package: npm install -g serve
• Then have the command serve -s /var/www/sitename to execute on reboot.

This is what works for me on my VPS.

Answer 16

You can use the following command in your shell to start your node forever:

forever app.js //my node script

You need to keep in mind that the server on which your app is running should always be kept on.