I've been banging my head on this issue for days now and have finally reached a brick wall.
I've been trying to get my stack to run:
I've been looking at some other SO articles like this one:
nginx - uWSGI HTTP + websocket config
They seem to have a similar issue i am encountering but the solution does not work for me.
Basically, i keep encountering the nginx 502 bad gateway screen whenever i try starting up my uWSGI processes. I have two separate uwsgi processes running, as per instructions in the documentation.
When i run the websocket uwsgi instance, i get the following:
*** running gevent loop engine [addr:0x487690] ***
[2015-05-27 00:45:34,119 wsgi_server] DEBUG: Subscribed to channels: subscribe-broadcast, publish-broadcast
which tells me that that uwsgi instance is running okay. Then i run my next uwsgi process and no error logs there either...
When i navigate to the page in the browser, the page with hang for a few seconds, before getting the 502 Bad Gateway Screen.
According to NGINX logs, NGINX says:
2015/05/26 22:46:08 [error] 18044#0: *3855 upstream prematurely closed connection while reading response header from upstream, client: 192.168.59.3, server: , request: "GET /chat/ HTTP/1.1", upstream: "uwsgi://unix:/opt/django/django.sock:", host: "192.168.59.103:32768"
This is the only error log i get when trying to access the page in the web browser.
Any ideas anyone???
Below are some of my config files:
nginx.conf
user www-data;
worker_processes 4;
pid /run/nginx.pid;
events {
worker_connections 768;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
# server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
##
# SSL Settings
##
ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
ssl_prefer_server_ciphers on;
##
# Logging Settings
##
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
gzip_disable "msie6";
# gzip_vary on;
# gzip_proxied any;
# gzip_comp_level 6;
# gzip_buffers 16 8k;
# gzip_http_version 1.1;
# gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
##
# Virtual Host Configs
##
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/django.conf;
}
I have the following django.conf file, which extends nginx.conf
upstream django {
server unix:/opt/django/django.sock;
}
server {
listen 80 default_server;
charset utf-8;
client_max_body_size 20M;
sendfile on;
keepalive_timeout 0;
large_client_header_buffers 8 32k;
location /media {
alias /opt/django/app/media/media;
}
location /static {
alias /opt/django/app/static;
}
location / {
include /opt/django/uwsgi_params;
}
location /ws/ {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_pass http://unix:/opt/django/app.sock;
proxy_buffers 8 32k;
proxy_buffer_size 64k;
}
}
And two files that are responsible for my uwsgi processes as follows:
runserver_uwsgi.ini:
[uwsgi]
ini = :runserver
[default]
userhome = /opt/django
chdir = %dapp/
master = true
module = chatserver.wsgi:application
no-orphans = true
threads = 1
env = DJANGO_SETTINGS_MODULE=myapp.settings
vacuum = true
[runserver]
ini = :default
socket = /opt/django/app.sock
module = wsgi_django
buffer-size = 32768
processes = 4
chmod-socket=666
and wsserver_uwsgi.ini
[uwsgi]
ini = :wsserver
[default]
userhome = /opt/django
chdir = %dapp/
master = true
module = chatserver.wsgi:application
no-orphans = true
threads = 1
env = DJANGO_SETTINGS_MODULE=chatserver.settings
vacuum = true
[wsserver]
ini = :default
http-socket = /opt/django/django.sock
module = wsgi_websocket
http-websockets = true
processes = 2
gevent = 1000
chmod-socket=666
I found the issue.
My [runserver] socket (app.sock) should be pointed under upstream django
and my [wsserver] socket (django.sock) should be pointed under location /ws/
like so:
upstream django {
server unix:/opt/django/app.sock;
}
server {
listen 80 default_server;
charset utf-8;
client_max_body_size 20M;
sendfile on;
keepalive_timeout 0;
large_client_header_buffers 8 32k;
location /media {
alias /opt/django/app/media/media;
}
location /static {
alias /opt/django/app/static;
}
location / {
include /opt/django/uwsgi_params;
}
location /ws/ {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_pass http://unix:/opt/django/django.sock;
proxy_buffers 8 32k;
proxy_buffer_size 64k;
}
}