nginx uwsgi websockets 502 Bad Gateway上游过早关闭连接，同时从上游读取响应头 [英] nginx uwsgi websockets 502 Bad Gateway upstream prematurely closed connection while reading response header from upstream

问题描述

几天来，我一直在努力解决这个问题，终于碰到了砖墙.

I've been banging my head on this issue for days now and have finally reached a brick wall.

我一直试图让我的堆栈运行:

I've been trying to get my stack to run:

http://django-websocket-redis.readthedocs.org/en/latest/running.html#django-with-websockets-for-redis-behind-nginx-using-uwsgi

我一直在看其他类似这样的文章:

I've been looking at some other SO articles like this one:

nginx-uWSGI HTTP + websocket配置

我似乎遇到了类似的问题，但该解决方案对我不起作用.

They seem to have a similar issue i am encountering but the solution does not work for me.

基本上，每当我尝试启动uWSGI进程时，我总是遇到Nginx 502错误的网关屏幕.按照文档中的说明，我有两个独立的uwsgi进程正在运行.

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.

当我运行websocket uwsgi实例时，得到以下信息:

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

告诉我uwsgi实例正在运行. 然后我运行我的下一个uwsgi进程，并且那里也没有错误日志...

which tells me that that uwsgi instance is running okay. Then i run my next uwsgi process and no error logs there either...

当我导航到浏览器中的页面时，页面挂起几秒钟，然后显示502 Bad Gateway屏幕.

When i navigate to the page in the browser, the page with hang for a few seconds, before getting the 502 Bad Gateway Screen.

根据NGINX日志，NGINX表示:

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"

这是我尝试在Web浏览器中访问页面时获得的唯一错误日志.

This is the only error log i get when trying to access the page in the web browser.

任何想法都可以吗?

以下是我的一些配置文件:

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;
}

我有以下django.conf文件，该文件扩展了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;
    }
}

和负责我的uwsgi进程的两个文件如下:

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

和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

推荐答案

我发现了问题.

我的[runserver]套接字(app.sock)应该指向upstream django，而我的[wsserver]套接字(django.sock)应该指向location /ws/，像这样:

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;
    }
}

这篇关于nginx uwsgi websockets 502 Bad Gateway上游过早关闭连接，同时从上游读取响应头的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！