Supervisor could be a client/server system that permits its users to watch and control variety of processes on UNIX-like operating systems.

It shares a number of an equivalent goals of programs like launchd, daemontools, and runit. Unlike a number of these programs, it’s not meant to be run as a substitute for init as “process id 1”. Instead it’s meant to be wont to control processes associated with a project or a customer, and is supposed to start out like all other program at boot time.

Official Website supervisord.org

If you haven’t install supervisor, you’ll install it first.

# Debian / Ubuntu:
$ sudo apt-get install supervisor

Next, we’ll configure it. We need to define a process to listen to.

$ sudo vim /etc/supervisor/conf.d/websocket.conf

Add this to your new conf file, changing file paths and your environment as necessary

[program:websocket]
command=php artisan websocket:init
directory=/path/to/laravel
stdout_logfile=/path/to/laravel/app/storage/logs/websocket_websocket.log
redirect_stderr=true

Now update Supervisor with: sudo supervisorctl reread command. And start using those changes with: sudo supervisorctl update command

We now have a process called “websocket” which we will tell Supervisord to start out and monitor.

Let’s do that:

$ sudo supervisorctl
> reread # Tell supervisord to check for new items in /etc/supervisor/conf.d/
> add websocket       # Add this process to Supervisord
> start websocket     # May say "already started"

Now the “websocket” process is on and being monitored. If our queue listener fails, Supervisord will restart the php artisan websocket:init process.