2018-07-14 20:43:16   

   docker 容器 docker-compose 容器编排

![](https://image.ynotes.cn/18-7-23/70377481.jpg) #### **项目目录结构** ```bash blog |-- docker-compose.yml #docker-compose编排文件 |-- mysql | |-- conf | | `-- mysqld.cnf #mysql配置文件 | |-- data #mysql数据存放目录 | |-- db_init_sql | | `-- blog.sql #blog的sql数据表结构 | `-- log #mysql日志目录 |-- nginx | |-- conf | | |-- mysite.template #生成blog.itisme.co.conf配置的样例文件 | | `-- nginx.conf #nginx配置文件 | |-- log #nginx日志目录 | | | | | `-- ssl | |-- fullchain.pem #ssl证书链 | `-- privkey.pem #ssl证书私钥 `-- uwsgi-django |-- build | |-- Dockerfile #构建uwsgi-django镜像的文件 | `-- requirements.txt #django项目需要的安装包 |-- conf | `-- config.ini #uwsgi启动配置参数 `-- my_project #django项目 |-- blog #blog应用 |-- manage.py `-- my_project ``` #### **新建docker项目数据配置存放目录** ```bash $ mkdir /data/docker_project/blog -p $ cd /data/docker_project/blog ``` #### **创建mysql容器使用的目录** ```bash $ mkdir mysql/{conf,data,db_init_sql,log} -p $ chmod 777 mysql/log ``` conf:存放mysql配置文件 data:存放mysql数据的目录 db_init_sql:存放的是mysql容器初始化的sql(存放django项目的建表语句) log:存放mysql日志,修改权限为777   #### **编辑mysql配置文件mysql/conf/mysqld.cnf(项目使用emoji表情,编码使用的是utf8mb4)** ```bash [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock symbolic-links=0 log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid default-time-zone = '+08:00' character-set-server=utf8 character-set-server = utf8mb4 collation-server = utf8mb4_unicode_ci character-set-client-handshake = FALSE innodb_buffer_pool_size = 128M sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES [client] default-character-set = utf8mb4 [mysql] default-character-set = utf8mb4 ``` #### **创建uwsgi-django容器使用的目录** ```bash $ mkdir uwsgi-django/{build,my_project,conf} -p ``` my_project:存放django项目 build:存放构建镜像uwsgi-django需要的文件 conf:存放uwsgi启动的配置文件 #### **创建uwsgi-django的Dockerfile文件(用于构建uwsgi-django镜像)** ```bash $ vim uwsgi-django/build/Dockerfile ``` ``` FROM python:2.7-slim RUN apt-get update && apt-get install -y \ gcc \ gettext \ mysql-client default-libmysqlclient-dev \ libpq-dev \ --no-install-recommends && rm -rf /var/lib/apt/lists/* ENV DJANGO_VERSION 1.9.5 RUN pip install mysqlclient psycopg2 uwsgi django=="$DJANGO_VERSION" WORKDIR /usr/src/app COPY requirements.txt ./ RUN pip install -r requirements.txt WORKDIR /usr/src/app/my_project ``` #### **项目的requirements.txt上传到django目录(项目所在的环境执行)** ```bash $ pip freeze >/root/requirements.txt ``` #### **拷贝requirements.txt到docker-compose编排所在机器uwsgi-django目录** ```bash $ scp /root/requirements.txt root@docker-host:/data/docker_project/blog/uwsgi-django/build ``` ### **增加uwsgi程序的配置文件uwsgi-django/conf/config.ini** ``` [uwsgi] socket = 0.0.0.0:8888 chdir = /usr/src/app/my_project module = my_project.wsgi master = true processes = 10 socket = /tmp/my_project.sock vacuum = true uid = 498 ``` #### **创建nginx容器使用的目录** ```bash $ mkdir nginx/{conf,ssl,log} $ chmod 777 nginx/log ``` conf:存放nginx的配置文件 ssl:存放SSL证书目录 log:存放日志目录 #### **编辑nginx/conf/nginx.conf** ```nginx user nginx; worker_processes 2; error_log /var/log/nginx/error.log warn; pid /var/run/nginx.pid; events { use epoll; worker_connections 10240; } http { include /etc/nginx/mime.types; default_type application/octet-stream; log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; access_log /var/log/nginx/access.log main; sendfile on; keepalive_timeout 65; include /etc/nginx/conf.d/blog.itisme.co.conf; } ``` #### **编辑nginx/conf/mysite.template(生成blog.itisme.co.conf的模板文件,通过envsubst替换环境变量)** ```nginx upstream uwsgi-django { server uwsgi-django:$UWSGI_PORT; # for a web port socket (we'll use this first) } server { listen $NGINX_PORT; server_name $NGINX_HOST; charset utf-8; rewrite ^(.*)$ https://${server_name}$1 permanent; } server { listen $NGINX_SSL_PORT ssl http2 default_server; listen [::]:443 ssl http2 default_server; server_name $NGINX_HOST; #证书配置 ssl_certificate "/etc/nginx/ssl/blog.itisme.co/fullchain.pem"; ssl_certificate_key "/etc/nginx/ssl/blog.itisme.co/privkey.pem"; ssl_session_cache shared:SSL:1m; ssl_session_timeout 10m; ssl_protocols TLSv1 TLSv1.1 TLSv1.2; ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE; ssl_prefer_server_ciphers on; # max upload size client_max_body_size 75M; # adjust to taste #django项目的上传文件的目录 location /upload { alias /data/app/my_project/my_project/upload; # your Django project's media files - amend as required } #django项目的静态文件目录 location /static { alias /data/app/my_project/my_project/static_all; } #django项目uwsgi配置 location / { uwsgi_pass uwsgi-django; include /data/app/my_project/my_project/uwsgi_params; # the uwsgi_params file you installed } error_page 404 /404.html; location = /40x.html { } error_page 500 502 503 504 /50x.html; location = /50x.html { } } ``` #### **拷贝证书到nginx/ssl目录** ```bash $ scp fullchain.pem root@docker-host:/data/docker_project/blog/nginx/ssl $ scp privkey.pem root@docker-host:/data/docker_project/blog/nginx/ssl ``` #### **编辑docker-compose.yml (客户端->nginx->uwsgi->django->db)** ```bash $ vim docker-compose.yml ``` ```yaml version: '3' services: db: image: mysql:5.7 restart: always container_name: blog-db environment: MYSQL_ROOT_PASSWORD: 123456 MYSQL_DATABASE: blog MYSQL_USER: blog MYSQL_PASSWORD: 123456 volumes: #挂载mysql配置文件 - ./mysql/conf/mysqld.cnf:/etc/mysql/mysql.conf.d/mysqld.cnf #挂载数据库初始化脚本 - ./mysql/db_init_sql:/docker-entrypoint-initdb.d #挂载mysql数据目录 - ./mysql/data:/var/lib/mysql #挂载mysql日志目录 - ./mysql/log:/var/log uwsgi-django: #使用./uwsgi-django/build/目录下的Dockerfile构建镜像 build: ./uwsgi-django/build/ #当存在build时,image参数表示的是构建后的镜像名 image: uwsgi-django:1.9.5 restart: always depends_on: - db container_name: blog-uwsgi-django environment: DB_NAME: blog DB_USER: blog DB_PASS: 123456 DB_PORT: 3306 WEB_URL: blog.itisme.co volumes: #挂载django项目 - ./uwsgi-django/my_project:/usr/src/app/my_project #挂载uwsgi配置文件 - ./uwsgi-django/conf:/usr/src/app/uwsgi/conf command: uwsgi /usr/src/app/uwsgi/conf/config.ini nginx: #使用nginx官方稳定版镜像 image: nginx:stable restart: always depends_on: - uwsgi-django container_name: blog-nginx environment: NGINX_HOST: blog.itisme.co NGINX_PORT: 80 NGINX_SSL_PORT: 443 UWSGI_PORT: 8888 ports: - 80:80 - 443:443 volumes: #挂载nginx配置 - ./nginx/conf/nginx.conf:/etc/nginx/nginx.conf #挂载站点模板文件 - ./nginx/conf/mysite.template:/etc/nginx/conf.d/mysite.template #挂载ssl证书 - ./nginx/ssl/fullchain.pem:/etc/nginx/ssl/blog.itisme.co/fullchain.pem - ./nginx/ssl/privkey.pem:/etc/nginx/ssl/blog.itisme.co/privkey.pem #挂载项目静态文件 - ./uwsgi-django/my_project/my_project/upload:/data/app/my_project/my_project/upload - ./uwsgi-django/my_project/my_project/static_all:/data/app/my_project/my_project/static_all #挂载uwsgi参数文件 - ./uwsgi-django/my_project/my_project/uwsgi_params:/data/app/my_project/my_project/uwsgi_params - ./nginx/log/:/var/log/nginx/ #envsubst替换/etc/nginx/conf.d/mysite.template变量 command: /bin/bash -c "envsubst < /etc/nginx/conf.d/mysite.template > /etc/nginx/conf.d/blog.itisme.co.conf && nginx -g 'daemon off;'" ``` #### **修改django项目的mysql配置(修改项目里的mysql配置成上面的environment中指定的环境变量)** ```bash import os _env = os.environ #django指定可以访问的域 DOMAIN = _env['WEB_URL'] DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', 'NAME': _env['DB_NAME'], 'HOST': 'db', 'PORT': _env['DB_PORT'], 'USER': _env['DB_USER'], 'PASSWORD': _env['DB_PASS'], 'OPTIONS': {'charset':'utf8mb4'}, } } ``` #### **启动项目** ```bash $ docker-compose up ``` #### **启动项目后台运行** ```bash $ docker-compose up -d ``` #### **查看docker进程** ```bash $ docker-compose ps ``` ``` Name Command State Ports ---------------------------------------------------------------------- blog-db docker-entrypoint.sh mysqld Up 3306/tcp blog-nginx /bin/bash -c envsubst < /e ... Up 0.0.0.0:443->443/tcp, 0.0.0.0:8880->80/tcp blog-uwsgi-django uwsgi /usr/src/app/uwsgi/c ... Up ``` #### **浏览器访问https://ynotes.cn/blog/**

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