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Controlling Nginx with Supervisor

Important

Supervisor uses daemon off; to start Nginx. The daemon off; directive tells Nginx to stay in the foreground. The sudo service nginx stop/start/restart commands won’t work. For more information read Stack Overflow answer.

Current nginx process

As you can see below, Nginx is running in “daemon on” mode.

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root@us:~# ps aux | grep nginx
root 12527 0.0 0.2 132576 1064 ? Ss 09:52 0:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
www-data 12529 0.2 1.6 134176 8092 ? S 09:52 0:07 nginx: worker process
www-data 12530 0.0 0.7 132808 3800 ? S 09:52 0:00 nginx: cache manager process
root 13154 0.0 0.1 8900 660 pts/0 S+ 10:38 0:00 grep --color=auto nginx

Install & Setup supervisor

Install

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sudo apt update
sudo apt install supervisor

Setup configuration for Nignx

Add nginx.conf file: /etc/supervisor/conf.d/nginx.conf

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[program:nginx]
command=/usr/sbin/nginx -g "daemon off;"
autostart=true
autorestart=true
startretries=5
numprocs=1
startsecs=0
process_name=%(program_name)s_%(process_num)02d
stderr_logfile=/var/log/supervisor/%(program_name)s_stderr.log
stderr_logfile_maxbytes=10MB
stdout_logfile=/var/log/supervisor/%(program_name)s_stdout.log
stdout_logfile_maxbytes=10MB

Let supervisor know about new config.

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$ sudo supervisorctl reread
nginx: available

Stop and disable the Nginx service

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sudo systemctl stop nginx
sudo systemctl disable nginx

Let supervisor start nginx service.

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$ sudo supervisorctl update
nginx: added process group

Verify if supervisor started nginx service.

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$ sudo supervisorctl
nginx:nginx_00 RUNNING pid 18429, uptime 0:01:47
supervisor>

Check

As you can see below, Nginx is running in “daemon off” mode.

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root@us:~# ps aux | grep nginx
root 692 0.3 1.5 132576 7768 ? S 10:56 0:00 nginx: master process /usr/sbin/nginx -g daemon off;
www-data 703 1.1 1.4 133140 6884 ? S 10:56 0:00 nginx: worker process
www-data 704 0.0 0.7 132808 3620 ? S 10:56 0:00 nginx: cache manager process
www-data 708 0.0 0.7 132808 3620 ? S 10:56 0:00 nginx: cache loader process
root 800 0.0 0.1 8900 736 pts/0 S+ 10:57 0:00 grep --color=auto nginx


转载请注明出处:Controlling Nginx with Supervisor
原文地址:https://www.xiaotanzhu.com/linux/control-nginx-with-supervisor.html