Django 前提

割愛

• Django を Gunicorn で起動出来る
• Gunicorn の設定を最小限理解出来る
• Nginx + Gunicorn の連携を理解することが出来る
• Ansible から Gunicorn を組み込むことが出来る

$ pip install gunicorn setproctitle

settings.py

INSTALLED_APPS = (
    ...
    'gunicorn',
    ...
)

gunicorn_levy.conf.py

import multiprocessing

# Server Socket
bind = 'unix:/tmp/gunicorn_levy.sock'
backlog = 2048

# Worker Processes
workers = multiprocessing.cpu_count() * 2 + 1
worker_class = 'sync'
worker_connections = 1000
max_requests = 0
timeout = 30
keepalive = 2
debug = False
spew = False

# Logging
logfile = '/var/log/gunicorn/levy.log'
loglevel = 'info'
logconfig = None

# Process Name
proc_name = 'gunicorn_levy'

$ python manage.py run_gunicorn --config gunicorn_levy.conf.py
2013-11-09 06:29:40 [8620] [INFO] Starting gunicorn 18.0
2013-11-09 06:29:40 [8620] [INFO] Listening at: unix:/tmp/gunicorn_levy.sock (8620)
2013-11-09 06:29:40 [8620] [INFO] Using worker: sync
2013-11-09 06:29:40 [8624] [INFO] Booting worker with pid: 8624
2013-11-09 06:29:40 [8625] [INFO] Booting worker with pid: 8625
2013-11-09 06:29:40 [8626] [INFO] Booting worker with pid: 8626
2013-11-09 06:29:40 [8627] [INFO] Booting worker with pid: 8627
2013-11-09 06:29:40 [8628] [INFO] Booting worker with pid: 8628
2013-11-09 06:29:40 [8629] [INFO] Booting worker with pid: 8629
2013-11-09 06:29:40 [8630] [INFO] Booting worker with pid: 8630
2013-11-09 06:29:40 [8631] [INFO] Booting worker with pid: 8631
2013-11-09 06:29:40 [8632] [INFO] Booting worker with pid: 8632

$ sudo groupadd nginx
$ sudo useradd -g nginx nginx
$ sudo usermod -s /bin/false nginx

$ curl -O http://nginx.org/download/nginx-1.4.3.tar.gz
$ tar xvfz nginx-1.4.3.tar.gz
$ cd nginx-1.4.3
$ ./configure --prefix=/opt/nginx/1.4.3 \
              --conf-path=/etc/nginx/nginx.conf \
              --error-log-path=/var/log/nginx/error.log \
              --pid-path=/var/run/nginx/nginx.pid \
              --lock-path=/var/lock/nginx.lock \
              --user=nginx \
              --group=nginx \
              --with-http_gzip_static_module \
              --http-log-path=/var/log/nginx/access.log

$ make
$ make install

$ sudo chown nginx:nginx /opt/nginx/1.4.3/*
$ sudo chown nginx:nginx /var/log/nginx/*
$ sudo chown nginx:nginx /var/run/nginx/*

nginx.conf:

user nginx nginx;

worker_processes  1;

events {
    worker_connections  1024;
    accept_mutex off;
}

http {
    include mime.types;
    default_type application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    sendfile on;
    tcp_nopush on;
    keepalive_timeout 5;
    gzip on;

    include levy.conf;
}

nginx/levy.conf:

upstream levy-backend {
    server unix:/tmp/gunicorn_levy.sock fail_timeout=0;
}

server {
    listen       80;
    server_name  levy.example.com;

    access_log  /var/log/nginx/levy.example.com-access.log main;
    error_log   /var/log/nginx/levy.example.com-error.log  info;

    location ~ /media/(.*)$ {
        alias /opt/local/lib/python2.7/site-packages/django/contrib/admin/media/$1;
        break;
    }

    location / {
        proxy_pass http://levy-backend;
        break;
    }
}

$ sudo sbin/nginx -c nginx.conf

[program:gunicorn]
command=/path/to/gunicorn main:application -c /path/to/gunicorn.conf.py
directory=/path/to/project
user=nobody
autostart=true
autorestart=true
redirect_stderr=True

未検証

$ ansible-playbook gunicorn.yml

gunicorn.yml
templates/
    gunicorn.conf.py.j2

template: src=templates/gunicorn.conf.py.j2 dest=/etc/gunicorn.conf.py owner=bin group=wheel mode=0644

templates/gunicorn.conf.py.j2

import multiprocessing

# Server Socket
bind = 'unix:/tmp/{{ app_name }}.sock'
backlog = 2048

# Worker Processes
workers = multiprocessing.cpu_count() * 2 + 1
worker_class = 'sync'
worker_connections = 1000
max_requests = 0
timeout = 30
keepalive = 2

debug = False
spew = False

# preload_app = True
# dameon = False
# pidfile = ''
# user = ''
# group = ''
# umask = 0002

# Logging
logfile = '/var/log/gunicorn/{{ app_name }}.log'
loglevel = 'info'
logconfig = None

# Process Name
proc_name = '{{ app_name }}'

supervisor.d/gunicorn_{{ app_name }}.j2

[program:gunicorn]
command=/path/to/gunicorn main:application -c /path/to/gunicorn.conf.py
directory=/path/to/project
user=nobody
autostart=true
autorestart=true
redirect_stderr=True

Configuration Files for Nginx + Gunicorn + Supervisord

https://gist.github.com/dstufft/997475

nginxとgunicornとsupervisorを連携させる - saito’s blog

http://d.hatena.ne.jp/saitodevel01/20110811/1313019218

Deploying Gunicorn — Gunicorn 18.1 documentation

http://docs.gunicorn.org/en/latest/deploy.html

Serving multiple Django applications with Nginx and Gunicorn - Michał Karzyński

http://michal.karzynski.pl/blog/2013/10/29/serving-multiple-django-applications-with-nginx-gunicorn-supervisor/