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Jordy avatar Server

Running PHP script constantly in background

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Jordy

I have created a PHP file that contains an infinite loop that does certain checks and acts if variables change (what's inside the script is probably not very important for my question). I want the service to always run, untill I tell it to stop. After some searching I decided to be using nohup for this task. However, the downside of nohup is that I can't really monitor if the service is down (other than manually running ps -aux and looking for the process).

I've also read things about supervisord, which also sounded pretty good, but I'm kind of lost and don't really know what the best solution is. I want the PHP script to automatically start on reboots and I want the service to check if the script is still running, if not, I want it to reboot/alert so I can check what's up.

Should I be using either nohup or supervisord? Or do you guys recommend something totally different? It would be great if I could run the service inside a docker container where I can simply add the execution of the service inside the Dockerfile.

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Gerald Schneider
What's wrong with creating a systemd unit?
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Gerald Schneider
the Docker container would already do what you want, you answered your own question.
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Jordy avatar
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Jordy
@GeraldSchneider how does a docker container already do that? Does a docker container create a service of the php command it executes? And I'll look into systemd, is it any different than supervisord?
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xR34P3Rx avatar Server
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xR34P3Rx

Sounds like you're better off just using good'ol CRON.

You can configure any script to run at whatever interval though I would not recommend running it continuously, maybe have it run every 5 minutes. So something like this:

*/5 * * * * php /path/to/php/file >/dev/null 2>&1

So you can learn more about CRON: https://linuxman.co/linux-server/cron-a-nosedive-into-lazy-sysadmin/

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