supervisord graceful shutdown issue in kubernetes - laravel

Question

I'm facing an issue with supervisor & kubernetes.
Below is my supervisor config for laravel queue worker.
[program:queue-worker]
process_name=%(program_name)s_%(process_num)02d
command=php /var/www/html/artisan queue:work --sleep=10 --tries=3 --max-time=3600 --timeout=90 --daemon
user=nobody
autostart=true
autorestart=false
stopasgroup=true
killasgroup=true
numprocs=1
redirect_stderr=true
stdout_logfile=/var/www/html/queue-worker.log
stopwaitsecs=50
stopsignal=TERM
when my container is terminating, a supervisor is still running in the background. It is not listing to the SIGTERM from Kubernetes.
if I try to stop using the preStop hook from Kubernetes and run the command /usr/bin/supervisorctl stop queue-worker:* then it stops immediately without waiting for 50 sec as mentioned in config.

Answer 1

To resolve the issue, I'm started Nginx and PHP-fpm with the worker using a supervisor. So basically supervisor has PID 1 and it will receive SIGTERM before the pod stops from Kubernetes.
Note: Kubernetes send SIGTERM signal only to Process with ID 1. No child process receives a SIGTERM signal. If you want to send SIGTERM or any other POSIX signal to the process, then you can use the preStop hook.