Reference: https://stackoverflow.com/a/32944853
A simple CLI tool for ensuring that a given script runs continuously (i.e. forever)
https://github.com/foreversd/forever#readme
A simple example to start and manage Forever
> forever start -a --minUptime 1000 --spinSleepTime 2000 --uid yourapp-stg yourapp.js
-a append to logs
--minUptime 1000 wait a second before considering restart
--spinSleepTime 2000 wait two seconds before restarting
--uid name the forever process
List all running Forever processes
> forever list
info: Forever processes running
data: uid command script forever pid id logfile uptime
data: [0] yourapp-stg /usr/bin/node start.js 1668 23197 /home/yourapp/.forever/yourapp.log 0:1:20:14.94
You can restart and stop by name or uid.
Note: uid is incremental, so it may not always be the same number.
> forever restart yourapp-stg
> forever restart 0
> forever stop yourapp-stg
> forever stop 0
And since you may not want to type or remember all these options, create some helper shell scripts
> start-yourapp.sh
#!/bin/bash
forever start -a --minUptime 1000 --spinSleepTime 2000 --uid yourapp-stg yourapp.js
> restart-yourapp.sh
#!/bin/bash
forever restart yourapp-stg
While forever will keep your NodeJS process running, it will not start on reboot.
One simple method to ensure your NodeJS runs on reboot, is to add crontab entry to your forever process.
Create a crontab entry as the user your app runs as
> crontab -e
@reboot /bin/sh /home/yourapp/crontab-reboot.sh
And create the reboot script
> crontab-reboot.sh
#!/bin/bash
# export path to NodeJS, Forever
export PATH=/usr/local/bin:$PATH
# cd to location of script
cd /home/yourapp || exit
# run script, in this case Forever
forever start -a --minUptime 1000 --spinSleepTime 2000 --uid yourapp start.js
So now you application will run .. Forever .. yup.
-End of Document-
Thanks for reading
