configuring nginx on ubuntu for multiple uwsgi-emperor flask applications

Question

I have two flask applications that i want to host on the same webserver.
I've successfully got one or the other running, but I can't seem to get both going at the same time.

I used the set-up from http://vladikk.com/2013/09/12/serving-flask-with-nginx-on-ubuntu/

My nginx config and uwsgi ini files are identical; except I substitute a different folder name depending on the app and folder structure, eg "request" or "demoapp" for my other app.

my nginx config file for the request app is

server {
    listen      80;
    server_name localhost;
    charset     utf-8;
    client_max_body_size 75M;

    location / { try_files $uri @yourapplication; }
    location @yourapplication {
        include uwsgi_params;
        uwsgi_pass unix:/var/www/request/request_uwsgi.sock;
    }
}

and my uwsgi ini file is

[uwsgi]
#application's base folder
base = /var/www/request

#python module to import
app = open
module = %(app)

home = %(base)/venv
pythonpath = %(base)

#socket file's location
socket = /var/www/request/%n.sock

#permissions for the socket file
chmod-socket    = 666

#the variable that holds a flask application inside the module imported at line #6
callable = app

#location of log files
logto = /var/log/uwsgi/%n.log

this line gets my app working

/etc/nginx/sites-enabled$ uwsgi --ini /var/www/request/request_uwsgi.ini

and if i switch out "request" for my other app, it get's the other app working.

my nginx error.log shows that when i have both config files in sites-enabled, i get this

2015/05/07 10:03:45 [warn] 7527#0: conflicting server name "localhost" on 0.0.0.0:80, ignored
2015/05/07 10:03:45 [warn] 7527#0: conflicting server name "localhost" on 0.0.0.0:80, ignored
2015/05/07 10:03:46 [warn] 7531#0: conflicting server name "localhost" on 0.0.0.0:80, ignored
2015/05/07 10:03:46 [warn] 7531#0: conflicting server name "localhost" on 0.0.0.0:80, ignored
2015/05/07 10:04:06 [error] 7533#0: *1 connect() to unix:/var/www/demoapp/demoapp_uwsgi.sock failed (111: Connection refused) while connecting to upstream, client: 127.0.0.1, server: localhost, request: "GET /login HTTP/1.1", upstream: "uwsgi://unix:/var/www/demoapp/demoapp_uwsgi.sock:", host: "argonaut"
2015/05/07 10:04:08 [error] 7533#0: *1 connect() to unix:/var/www/demoapp/demoapp_uwsgi.sock failed (111: Connection refused) while connecting to upstream, client: 127.0.0.1, server: localhost, request: "GET /login HTTP/1.1", upstream: "uwsgi://unix:/var/www/demoapp/demoapp_uwsgi.sock:", host: "argonaut"
2015/05/07 10:30:10 [error] 7788#0: *1 open() "/usr/share/nginx/html/login" failed (2: No such file or directory), client: 127.0.0.1, server: localhost, request: "GET /login HTTP/1.1", host: "argonaut"
2015/05/07 10:31:54 [error] 7833#0: *1 open() "/usr/share/nginx/html/request" failed (2: No such file or directory), client: 127.0.0.1, server: localhost, request: "GET /request HTTP/1.1", host: "argonaut"

"argonaut" is the name of my server

I can't find any config examples of anyone running two flask apps or even a good explanation of how to write the conf file.

Update I'm thinking of giving up and setting up a virtual machine with a separate nginx on my server to host the multiple applications.

Thank you!

Answer 1

In nginx you can repeat the server component though change the server_name. Manipulating the server_name can be from a simple dns A Record or CNAME. See https://stackoverflow.com/a/27221427/567606 for a full answer/