[Linux][Supervisor] How to use supervisor to run a program as daemon?

program_as_daemon_supervisor.md

How to use supervisor to run a program as daemon?

Install the supervisor package

sudo apt-get install supervisor

Create a config file for your daemon at /etc/supervisor/conf.d/flashpolicyd.conf

[program:flashpolicyd]
directory=/path/to/project/root
environment=ENV_VARIABLE=example,OTHER_ENV_VARIABLE=example2
command=python flashpolicyd.py
autostart=true
autorestart=true

Another example configuration

[unix_http_server]
file=./tmp/sock/supervisor.sock                       ; path to your socket file

[supervisord]
logfile=./tmp/logs/supervisord.log    ; supervisord log file
logfile_maxbytes=50MB                           ; maximum size of logfile before rotation
logfile_backups=10                              ; number of backed up logfiles
loglevel=error                                  ; info, debug, warn, trace
pidfile=./tmp/pid/supervisord.pid                ; pidfile location
nodaemon=true                                  ; run supervisord as a daemon
minfds=1024                                     ; number of startup file descriptors
minprocs=200                                    ; number of process descriptors
user=root                                       ; default user
childlogdir=./tmp/logs/               ; where child log files will live

[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

[supervisorctl]
serverurl=unix://./tmp/sock/supervisor.sock         ; use a unix:// URL  for a unix socket

[inet_http_server]
port = 127.0.0.1:9001

[program:tao-app]
command=python app.py --port=8000 --server_path=ec2-54-87-125-46.compute-1.amazonaws.com
stderr_logfile = ./tmp/logs/tornado-stderr.log
stdout_logfile = ./tmp/logs/tornado-stdout.log

Restart supervisor to load your new .conf

supervisorctl update
supervisorctl restart flashpolicyd