我使用 Django Channels 创建了一个 Web 应用程序,在尝试设置 Supervisor 系统时遇到了问题。
首先,应用程序在本地运行良好。
远程(我使用带有 Ubuntu Server 18.04 LTS 的 AWS EC2 实例),当使用命令运行时daphne -b 0.0.0.0 -p 8000 mysite.asgi:application
它也运行良好。
但是,我不能让它与主管一起工作。我遵循官方 Django Channels 文档(https://channels.readthedocs.io/en/latest/deploying.html)的说明,因此我有:
nginx配置文件:
upstream channels-backend { server localhost:8000; } server { server_name www.example.com; keepalive_timeout 5; client_max_body_size 1m; access_log /home/ubuntu/django_app/logs/nginx-access.log; error_log /home/ubuntu/django_app/logs/nginx-error.log; location /static/ { alias /home/ubuntu/django_app/mysite/staticfiles/; } 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 $server_name; } listen 443 ssl; # managed by Certbot ssl_certificate /etc/letsencrypt/live/www.example.com/fullchain.pem; # managed by Certbot ssl_certificate_key /etc/letsencrypt/live/www.example.com/privkey.pem; # managed by Certbot include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot } server { listen 80; server_name www.example.com; if ($host = www.example.com) { return 301 https://$host$request_uri; } # managed by Certbot return 404; # managed by Certbot }
主管配置文件:
[fcgi-program:asgi] socket=tcp://localhost:8000 directory=/home/ubuntu/django_app/mysite command=/home/ubuntu/django_app/venv/bin/daphne -u /run/daphne/daphne%(process_num)d.sock --fd 0 --access-log - --proxy-headers mysite.asgi:application numprocs=4 process_name=asgi%(process_num)d autostart=true autorestart=true stdout_logfile=/home/ubuntu/django_app/logs/supervisor_log.log redirect_stderr=true
这样设置时,网页不工作(504 Gateway Time-out)。在主管日志文件中,我看到:
2018-11-14 14:48:21,511 INFO Starting server at fd:fileno=0, unix:/run/daphne/daphne0.sock
2018-11-14 14:48:21,516 INFO HTTP/2 support enabled
2018-11-14 14:48:21,517 INFO Configuring endpoint fd:fileno=0
2018-11-14 14:48:22,015 INFO Listening on TCP address 127.0.0.1:8000
2018-11-14 14:48:22,025 INFO Configuring endpoint unix:/run/daphne/daphne0.sock
2018-11-14 14:48:22,026 CRITICAL Listen failure: [Errno 2] No such file or directory: '1416' -> b'/run/daphne/daphne0.sock.lock'
2018-11-14 14:48:22,091 INFO Starting server at fd:fileno=0, unix:/run/daphne/daphne2.sock
2018-11-14 14:48:22,096 INFO HTTP/2 support enabled
2018-11-14 14:48:22,097 INFO Configuring endpoint fd:fileno=0
2018-11-14 14:48:22,135 INFO Starting server at fd:fileno=0, unix:/run/daphne/daphne3.sock
2018-11-14 14:48:22,152 INFO HTTP/2 support enabled
2018-11-14 14:48:22,153 INFO Configuring endpoint fd:fileno=0
2018-11-14 14:48:22,237 INFO Listening on TCP address 127.0.0.1:8000
2018-11-14 14:48:22,241 INFO Listening on TCP address 127.0.0.1:8000
2018-11-14 14:48:22,242 INFO Configuring endpoint unix:/run/daphne/daphne3.sock
2018-11-14 14:48:22,242 CRITICAL Listen failure: [Errno 2] No such file or directory: '1419' -> b'/run/daphne/daphne3.sock.lock'
2018-11-14 14:48:22,252 INFO Configuring endpoint unix:/run/daphne/daphne2.sock
2018-11-14 14:48:22,252 CRITICAL Listen failure: [Errno 2] No such file or directory: '1420' -> b'/run/daphne/daphne2.sock.lock'
等等
请注意,在 Supervisor 命令中,Daphne 进程以另一种方式调用(使用其他参数集)而不是我之前运行它 - 不是地址和端口的参数,而是套接字和文件描述符的参数(关于这些我没有知道很多)。我怀疑这是遇到错误的原因。
任何帮助或建议将不胜感激。
相关软件包版本:
channels==2.1.2
channels-redis==2.2.1
daphne==2.2.1
Django==2.1.2
编辑:
当我为套接字文件(在主管配置文件中的 Daphne 命令中存在)创建空文件时,即。/run/daphne/daphne0.sock
, /run/daphne/daphne1.sock
, 等等,然后日志文件说明以下内容:
2018-11-15 10:24:38,289 INFO Starting server at fd:fileno=0, unix:/run/daphne/daphne0.sock
2018-11-15 10:24:38,290 INFO HTTP/2 support enabled
2018-11-15 10:24:38,280 INFO Configuring endpoint fd:fileno=0
2018-11-15 10:24:38,458 INFO Listening on TCP address 127.0.0.1:8000
2018-11-15 10:24:38,475 INFO Configuring endpoint unix:/run/daphne/daphne0.sock
2018-11-15 10:24:38,476 CRITICAL Listen failure: Couldn't listen on any:b'/run/daphne/daphne0.sock': [Errno 98] Address already in use.
问题:这些文件不应该是空的吗?他们应该包括什么?