前面大多數都在講基本概念，也有實作一些指令給大家看，方便讓大家了解也更知道在做什麼，這次我們結合前面所教的實作起來，剛好可以重新複習讓菜鳥們更熟悉

我們要實作的內容 Django + Nginx + Redis + Mysql 透過 Docker 啟一個網站

1. 先創建 Network Bridge
   docker network create -d bridge "Network Name"
   

   • 這邊我是創一個 Network 名為mybirdge Drive為bridge

2. Mysql
   Mysql Dockerfile

   FROM mysql:latest
   
   # 設定環境變數
   ENV MYSQL_DATABASE=ItDB
   ENV MYSQL_USER=ITUser
   ENV MYSQL_PASSWORD='Your Password'
   ENV MYSQL_ROOT_PASSWORD='Your  Password'
   
   # COPY my.cnf /etc/my.cnf
   RUN echo '[mysqld]' >> /etc/my.cnf  \
   && echo "general_log = 1" >> /etc/my.cnf \
   && echo "general_log_file = /var/log/mysqld.log" >> /etc/my.cnf \
   && echo "log_output = file" >> /etc/my.cnf
   
   # 指定路徑
   WORKDIR /var/lib/mysql
   
   # 指定容器運行時使用的預設命令
   CMD ["mysqld"]
   
   

   建立Mysql Image
   docker build -t "Mysql Image Name" .

   啟動Mysql Containr
   docker run --name "Mysql Container Name" --network "Network Name" -d "Mysql Imag"

3. Redis
   Redis Dockerfile

   FROM redis:latest
   
   # 複製 redis.conf 檔案到容器中
   COPY redis.conf /usr/local/etc/redis/redis.conf
   
   RUN mkdir /home/redis/
   RUN chmod 777 /home/redis/
   
   # 執行 redis server 並且使用自訂的 redis.conf 檔案
   CMD ["redis-server", "/usr/local/etc/redis/redis.conf"]
   

   redis.conf

   # Redis 7.0 配置文件
   
   # 監聽的端口號
   port 6379
   
   # 以哪個用戶身份運行 Redis 服務
   user redis
   
   # 密碼設置，設置密碼後需使用該密碼才能訪問 Redis 服務
   requirepass redis12345
   
   # 日誌文件的位置和名稱
   logfile /home/redis/redis.log
   
   

   建立Mysql Image
   docker build -t "Redis Image Name" .

   啟動Mysql Containr
   docker run --name "Redis Container Name" --network "Network Name" -d "Redis Imag"

4. Django
   Django Dockerfile

   FROM python:3.9.6
   
   WORKDIR /web
   
   COPY . /web/
   
   RUN pip install -r requirements.txt
   
   
   CMD python manage.py runserver 0.0.0.0:8000
   

   • 這邊必須把Django Project(IT_Project) 複製到 web資料夾裡面

   修改IT_Project Settings.py
   Mysql

   DATABASES = {
    'default': {
        #'ENGINE': 'django.db.backends.sqlite3',
        #'NAME': BASE_DIR / 'db.sqlite3',
        'ENGINE' : 'django.db.backends.mysql',
        'NAME' : 'ItDB',
        'USER' : 'root',
        'PASSWORD' : 'Mysql Password',
        'HOST' :'Mysql Container Name',
        'PORT': '3306'
    }
   }
   

   • HOST 部分要設定Ｍysql Container

   Redis

   CACHES = {
    "default": {
        # 預設使用redis://<redis_host>:<redis_port>/<db_number>
        "BACKEND": "django_redis.cache.RedisCache",
        # 指定redis://IP/第幾個DB
        "LOCATION" : "redis://'Redis Container Name':6379/0",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
            "PASSWORD": "Redis Password",
        },
        'KEY_PREFIX': 'Cache'
    }
   }
   

   • LOCATION 要設定Redis Container

   建立Mysql Image
   docker build -t "Django Image Name" .

   啟動Mysql Containr
   docker run --name "Django Container Name" --network "Network Name" -d "Django Imag"

5. Nginx

   FROM nginx:latest
   
   COPY nginx.conf /etc/nginx/nginx.conf
   COPY my_nginx.conf /etc/nginx/sites-available/
   
   RUN mkdir -p /etc/nginx/sites-enabled/\
   && ln -s /etc/nginx/sites-available/my_nginx.conf /etc/nginx/sites-enabled/
   
   CMD ["nginx", "-g", "daemon off;"]
   

   nginx.conf

   user  root;
   worker_processes  1;
   
   error_log  /var/log/nginx/error.log warn;
   pid        /var/run/nginx.pid;
   
   
   events {
      worker_connections  1024;
   }
   
   
   http {
     include       /etc/nginx/mime.types;
     default_type  application/octet-stream;
     log_format  main  '$host $remote_addr - $remote_user [$time_local] '
                       '"$request" $status $body_bytes_sent '
                       '"$http_referer" "$http_user_agent" '
                       '$request_time';
   
     access_log  /var/log/nginx/access.log  main;
   
     sendfile        on;
     #tcp_nopush     on;
   
     keepalive_timeout  65;
   
     # Gzip Compression
     gzip on;
     # gzip_min_length 1000;
     gzip_types text/plain application/xml;
     gzip_proxied expired no-cache no-store private auth;
     gzip_vary on;
   
     # include /etc/nginx/conf.d/*.conf;
     include /etc/nginx/sites-available/*;
   

   my_nginx.conf

   # the upstream component nginx needs to connect to
   upstream uwsgi {
      # server unix:/web/dj3/web.sock; # using a file socket
      server "Django Container":8003;  # using the docker network
   }
   
    # configuration of the server
    server {
      # the port your site will be served on
      listen    80;
      # index  index.html;
      # the domain name it will serve for
      # substitute your machine's IP address or FQDN
      server_name  twtrubiks.com www.twtrubiks.com;
      charset     utf-8;
   
      client_max_body_size 75M;   # adjust to taste
   
   
   
      location /static/ {
         alias /itProject/static/; # your Django project's static files - amend as
         required
      }
   
      location / {
          uwsgi_pass  uwsgi;
          include     /etc/nginx/uwsgi_params; # the uwsgi_params file you installed
      }
   
   }
   

   • server 要寫Django Container

   建立Nginx Image
   docker build -t "Nginx Image Name" .

   啟動Mysql Containr
   docker run --name "Nginx Container Name" -p 8003:80 --network "Network Name" -d Nginx Name"

呈現結果
輸入127.0.0.1:8003/member/create

輸入127.0.0.1:8003/member/read

重點提醒

1. 先確保Django、Nginx、Redis、Mysql是否都設定同一個Network
2. 關於Django所需的的相關檔案，都包在IT_Project
3. 至於有些為何要需要額外的設定檔，那每個參數又代表什麼可以參考DevOps：如何將容器化 (Docker + Nginx + uWSGI + Django + PostgreSQL) 的服務部署在一台主機的根目錄

今天這篇大致上最主要是在講Docker層面居多，其餘相關的技術就不會細講，當然每個設定檔都有它的意義，我覺得要花時間去了解，可以從我提供的資料去了解，甚至自己去找資料，畢竟每個系統環境一定是不同的設定，當做訓練解決問題

參考資料
DevOps：如何將容器化 (Docker + Nginx + uWSGI + Django + PostgreSQL) 的服務部署在一台主機的根目錄