使用 Daphne 和 Nginx 部署 django 频道的问题

Posted 2023-02-24

【中文标题】使用 Daphne 和 Nginx 部署 django 频道的问题

【英文标题】：Trouble with deploy django channels using Daphne and Nginx

【发布时间】：2019-12-17 02:37:33

【问题描述】：

我在尝试打开网站时遇到 502 错误。我使用的是官网link的说明

在 /etc/supervisor/conf.d/

中添加了新文件 lifeline.conf

lifeline.conf

[fcgi-program:asgi]
# TCP socket used by nginx backend upstream
socket=tcp://localhost:8000

# Directory where your site's project files are located
directory=/home/ubuntu/lifeline/lifeline-backend

# Each process needs to have a separate socket file, so we use process_num
# Make sure to update "mysite.asgi" to match your project name
command=/home/ubuntu/Env/lifeline/bin/daphne -u /run/daphne/daphne%(process_num)d.sock --fd 0 --access-log - --proxy-head$

# Number of processes to startup, roughly the number of CPUs you have
numprocs=4

# Give each process a unique name so they can be told apart
process_name=asgi%(process_num)d

# Automatically start and recover processes
autostart=true
autorestart=true

# Choose where you want your log to go
stdout_logfile=/home/ubuntu/asgi.log
redirect_stderr=true

设置 nginx 配置

upstream channels-backend 
    server localhost:8000;


server 
    listen 80;
    server_name staging.mysite.com www.staging.mysite.com;
    client_max_body_size 30M;
    location = /favicon.ico  access_log off; log_not_found off; 

    location / 
        try_files $uri @proxy_to_app;
    

    location @proxy_to_app 
        proxy_pass http://channels-backend;

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

        proxy_redirect off;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Host $server_name;
    

我检查了 asgi 日志文件，它包含一个错误。

daphne: error: the following arguments are required: application

我猜 lifeline.conf 中有一个错误。

【参考方案1】：

我假设您没有将 asgi 应用程序传递给 daphne，因为您粘贴的配置有问题。你必须正确地通过它。假设你有 conf package 和 asgi.py 模块里面包含 asgi 应用程序实例，你必须这样做

command=/home/ubuntu/Env/lifeline/bin/daphne -u /run/daphne/daphne%(process_num)d.sock conf.asgi:application

conf.asgi:application 应该在最后。

【讨论】：

感谢您的建议。更新后出现新错误2019-08-09 11:36:23,711 INFO Starting server at unix:/run/daphne/daphne0.sock 2019-08-09 11:36:23,714 INFO HTTP/2 support not enabled (install the http2 and tls Twisted extras) 2019-08-09 11:36:23,714 INFO Configuring endpoint unix:/run/daphne/daphne0.sock 2019-08-09 11:36:23,720 CRITICAL Listen failure: [Errno 2] No such file or directory: '2843' -> b'/run/daphne/daphne0.sock.lock'

我在 /run/ 也找不到文件夹 daphne

我在 /run/ 中创建 daphne 文件夹，然后一切正常