Flask deployment on Debian Jessie

README.md

Flask deployment on Debian Jessie

Software

• Python3
• Flask
• gunicorn
• nginx
• Debian

Setup

gunicorn

• /etc/systemd/system/gunicorn.service
• /etc/systemd/system/gunicorn.socket
• /etc/tmpfiles.d/gunicorn.conf

nginx

• /etc/nginx/sites-available/app

app

# nginx
upstream app_server {
	server unix:/run/gunicorn/socket fail_timeout=0;
}

server {
	listen   80;
	server_name _;

	location / {
		try_files $uri @proxy_to_app;
	}

	location /static {
		alias	/home/user/app/static;
	}

	access_log /var/log/nginx/app_access.log;
	error_log /var/log/nginx/app_error.log;

	location @proxy_to_app {
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_redirect off;
		proxy_pass http://app_server;
	}

	error_page 404 /404.html;

	# redirect server error pages to the static page /50x.html
	#
	error_page 500 502 503 504 /50x.html;
	location = /50x.html {
		root /usr/share/nginx/www;
	}
}

gunicorn.conf

d /run/gunicorn 0755 www-data www-data -

gunicorn.service

[Unit]
Description=app gunicorn daemon
Requires=gunicorn.socket
After=network.target

[Service]
PIDFile=/run/gunicorn/pid
User=www-data
Group=www-data
WorkingDirectory=/home/user/app
ExecStart=/home/user/app/env/bin/gunicorn --workers 2 --pid /run/gunicorn/pid app:app
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s TERM $MAINPID
PrivateTmp=true

[Install]
WantedBy=multi-user.target

gunicorn.socket

[Unit]
Description=top music gunicorn socket

[Socket]
ListenStream=/run/gunicorn/socket

[Install]
WantedBy=sockets.target