How to run multiple Django sites on Nginx and uWSGI? - django

Question

Is it possible to run multiple Django sites on the same server using Nginx and uWSGI?
I suppose it's necessary to run multiple uWSGI instances (one for each site). I copied /etc/init.d/uwsgi to uwsgi2 and changed the port number. But, I got the following error:
# /etc/init.d/uwsgi2 start
Starting uwsgi: /usr/bin/uwsgi already running.
How is it possible to run multiple uWSGI instances?
Thanks

Answer 1

You can create create multiple virtual hosts that allow you to host multiple sites, independent from each other. More info here: http://wiki.nginx.org/VirtualHostExample.
A bit more detailed info here as well on how to setup virtual hosts http://projects.unbit.it/uwsgi/wiki/RunOnNginx#VirtualHosting.

Answer 2

You can run multiple instances of uwsgi using Emperor Mode.
This handles the creation of new worker instances. These instances are brilliantly and hilariously named vassals. Each vassal just needs a config file which is usually placed (or symlinked) in /etc/uwsgi/vassals
For nginx you'll need to create a server block for each host you wish to serve. Just change the server_name directive for each host you want to serve. Here's an example:
#Simple HTTP server
server {
listen 80;
root /usr/share/nginx/www;
server_name host1.example.com;
}
#Django server
server {
listen 80;
server_name host2.example.com;
#...upstream config...
}
Important: Make sure you have specified your host names in /etc/hosts. I found that without doing this my django site was also served on the default server IP despite specifying that it should only be served on a specific host name within my nginx configuration.

Answer 3

I see many suggestions like #donturner's answer. i.e. set two or more different server in nginx configure file. But the problem is each server needs an unique server_name either different domain name or sub-domain name. How about this kind of situation: I want to server two different Django project like this:
www.ourlab.cn/site1/ # first Django project
www.ourlab.cn/site2/ # second Django project
In this way, we can configure all of the settings in one server.
This is my setting in /etc/nginx/nginx.conf
# For more information on configuration, see:
# * Official English Documentation: http://nginx.org/en/docs/
# * Official Russian Documentation: http://nginx.org/ru/docs/
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
# Load dynamic modules. See /usr/share/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;
events {
worker_connections 1024;
}
http {
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Load modular configuration files from the /etc/nginx/conf.d directory.
# See http://nginx.org/en/docs/ngx_core_module.html#include
# for more information.
include /etc/nginx/conf.d/*.conf;
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name _;
root /usr/share/nginx/html;
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
location / {
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
}
This is my setting in /etc/nginx/conf.d/self_configure.conf
# /etc/nginx/conf.d/self_configure.conf
server {
listen 80;
server_name www.ourlab.cn;
# note that these lines are originally from the "location /" block
root /mnt/data/www/ourlab;
index index.php index.html index.htm;
location / {
try_files $uri $uri/ =404;
}
error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
location ~ \.php$ {
try_files $uri =404;
fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
# Django media
location /media {
# your Django project's media files - amend as required
alias /mnt/data/www/metCCS/metCCS/static/media;
}
location /static {
# your Django project's static files - amend as required
# first project's static files path
alias /mnt/data/www/metCCS/metCCS/static/static_dirs;
}
location /static_lip {
# second project's static files path
alias /mnt/data/www/lipidCCS/lipidCCS/static/static_dirs;
}
# match www.ourlab.cn/metccs/*
location ~* ^/metccs {
include uwsgi_params;
uwsgi_pass unix:/run/uwsgi/metCCS.sock;
}
# match www.ourlab.cn/lipidccs/*
location ~* ^/lipidccs {
include uwsgi_params;
uwsgi_pass unix:/run/uwsgi/lipidCCS.sock;
}
}
You also need to change one of the Django project's settings.py file as STATIC_URL = '/static_lip/', so two projects can use their static files separately.
A new finding is nginx can server static files by itself. Even we close uwsgi and Django, we also can use these files through browser.