Django个人博客搭建教程---channel的应用与阿里云部署

一、前言

pip3 install channel

二、应用

直接看官方教程，这里就不啰嗦了

三、部署

这里给出我的方案

安装supervisord

sudo apt install supervisor

在项目settings.py同级目录下建asgi.py

"""
ASGI entrypoint. Configures Django and then runs the application
defined in the ASGI_APPLICATION setting.
"""

import os
import django
from channels.routing import get_default_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "MyBlog.settings")
django.setup()
application = get_default_application()

 修改配置文件，路径如下

/etc/supervisor/supervisord.conf

; supervisor config file

[unix_http_server]
file=/var/run/supervisor.sock   ; (the path to the socket file)
chmod=0700                       ; sockef file mode (default 0700)

[supervisord]
logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)
pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
childlogdir=/var/log/supervisor            ; ('AUTO' child log dir, default $TEMP)

; the below section must remain in the config file for RPC
; (supervisorctl/web interface) to work, additional interfaces may be
; added by defining them in separate rpcinterface: sections
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

[supervisorctl]
serverurl=unix:///var/run/supervisor.sock ; use a unix:// URL  for a unix socket

; The [include] section can just contain the "files" setting.  This
; setting can list multiple files (separated by whitespace or
; newlines).  It can also contain wildcards.  The filenames are
; interpreted as relative to this file.  Included files *cannot*
; include files themselves.

[program:daphne]
directory=/home/MyBlog
command=daphne -b 127.0.0.1 -p 8001 --proxy-headers MyBlog.asgi:application #启动命令
autostart=true
autorestart=true
stdout_logfile=/tmp/websocket.log  #日志
redirect_stderr=true

[include]
files = /etc/supervisor/conf.d/*.conf

这里主要加入了

[program:daphne]
directory=/home/MyBlog # 你的项目路径，不是app路径
command=daphne -b 127.0.0.1 -p 8001 --proxy-headers MyBlog.asgi:application #启动命令
autostart=true
autorestart=true
stdout_logfile=/tmp/websocket.log  #日志
redirect_stderr=true

注意，记得检查是否存在日志文件，没有的话touch一个

查看进程命令

ps -ef | grep supervisord

启动命令 

supervisord -c /etc/supervisor/supervisord.conf

如果报错：

Unlinking stale socket /var/run/supervisor.sock

用如下命令：

find / -name supervisor.sock
/run/supervisor.sock

然后

unlink /run/supervisor.sock

再次启动

supervisord -c /etc/supervisor/supervisord.conf

 

然后修改nginx.conf文件

upstream channels-backend {
    server localhost:8001;
  }
# 在http中加入这个

# 在server中加入这个
# websockets
    location /ws/chat/ {
        proxy_pass http://channels-backend;
        proxy_http_version 1.1;
        proxy_redirect off;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Real-IP $remote_addr;
    }

http {

  upstream channels-backend {
    server localhost:8001;
  }

  server {
      listen 80;
      server_name  _;
      return 301 https://www.guanacossj.com$request_uri;
   }

	server {
    listen       443 default_server;
    listen       [::]:443 default_server;
    server_name  _;
	  ssl on;
	  ssl_certificate   /etc/nginx/cert/1831344_www.guanacossj.com.pem;     # 路径/pem文件
	  ssl_certificate_key  /etc/nginx/cert/1831344_www.guanacossj.com.key;  # 路径/key文件
	  ssl_session_timeout 5m;
	  ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
	  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
	  ssl_prefer_server_ciphers on;
    charset     utf-8;
    client_max_body_size 1000M;   # adjust to taste
    include /etc/nginx/default.d/*.conf;
    location /static {
    alias /home/MyBlog/static; # ָÏdjangoµÄtaticĿ¼
    }
    location /static/rest_framework/ {
    alias /usr/local/lib/python3.6/dist-packages/rest_framework/static/rest_framework/
    ;}

    # Finally, send all non-media requests to the Django server.
    location / {
        uwsgi_pass  127.0.0.1:8000;
        #uwsgi_pass  django;
        include     uwsgi_params; 	# the uwsgi_params file you installed;
        proxy_redirect off;
	      proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
	      uwsgi_send_timeout 600;
        uwsgi_connect_timeout 600;  
        uwsgi_read_timeout 600; 
    }
    # websockets
    location /ws/chat/ {
        proxy_pass http://channels-backend;
        proxy_http_version 1.1;
        proxy_redirect off;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Real-IP $remote_addr;
    }


}
...
}

注意查看你的html文件中的websocket请求地址

官方教程给的是

var chatSocket = new WebSocket('wss://' + 'www.guanacossj.com' +'/ws/chat/' + roomName + '/');

如果你用的https，像我一样，那就是wss开头

然后后面一定要是域名不能用localhost

注意这里的

/ws/chat/

和nginx中的location那里的一定要一致。