discourse docker 部署

部署说明

• 目标：以容器的方式部署discourse到网站的二级域名，如 http://test.test.com/community/
• 架构：1个postgres数据库，1个redis数据库，1个discourse服务器

部署步骤

按照官方的建议，采用官方提供的脚本来构建镜像。

1. 克隆官方的工具库

   git clone https://github.com/discourse/discourse_docker.git

2. 复制templates目录下的postgres.template.yml，redis.template.yml，web.china.template.yml文件到containers目录下，分别重命名为postgresql.yml，redis.yml，discourse.yml

3. 编辑postgresql.yml，完整内容如下：

   postgresql.yml

   templates:
     - "templates/postgres.template.yml"
   params:
     db_default_text_search_config: "pg_catalog.english"
     # 设置postgresql运行内存，可以根据需要设置大小
     db_work_mem: "2048MB"
   
   expose:
     # 暴露端口 主机端口:容器端口
     - "5432:5432"
   
   env:
     LANG: en_US.UTF-8
   
   volumes:
     # 挂载数据卷
     - volume:
           host: /path/to/postgresql
           guest: /shared
     - volume:
           host: /path/to/postgresql/log/var-log
           guest: /var/log
   
   hooks:
     after_postgres:
       - exec:
           stdin: |
             alter user discourse with password 'test';
           cmd: su - postgres -c 'psql discourse'
   
           raise_on_fail: false
   

4. 编辑redis.yml，内容如下：

   redis.yml

   templates:
     - "templates/redis.template.yml"
   
   expose:
     # 暴露端口
     - "6379:6379"
   
   
   env:
     LANG: en_US.UTF-8
   
   volumes:
     - volume:
           host: /path/to/redis
           guest: /shared
     - volume:
           host: /path/to/redis/log/var-log
           guest: /var/log
   

5. 编辑discourse.yml，内容如下：

   discourse.yml

   templates:
     - "templates/web.template.yml"
     - "templates/web.ratelimited.template.yml"
   
   expose:
     - "10083:80"
   
   # Use 'links' key to link containers together, aka use Docker --link flag.
   links:
     - link:
         name: postgresql
         alias: postgresql
     - link:
         name: redis
         alias: redis
   
   env:
     LANG: en_US.UTF-8
   
     DISCOURSE_DB_SOCKET: ''
     # postgres 数据库用户名
     DISCOURSE_DB_USERNAME: example
     # postgres 数据库密码
     DISCOURSE_DB_PASSWORD: example
     # postgres 数据库主机
     DISCOURSE_DB_HOST: postgresql
     # redis 数据库主机
     DISCOURSE_REDIS_HOST: redis
   
     # 设置开发者邮箱
     DISCOURSE_DEVELOPER_EMAILS: 'example@example.com'
   
     DISCOURSE_HOSTNAME: 'discourse.example.com'
   
     # 配置邮件服务器信息
     DISCOURSE_SMTP_ADDRESS: example.example.com
     DISCOURSE_SMTP_PORT: 25
     DISCOURSE_SMTP_USER_NAME: user.example.com
     DISCOURSE_SMTP_PASSWORD: password
     DISCOURSE_SMTP_AUTHENTICATION: login
   
     # 启用discourse跨域请求
     DISCOURSE_ENABLE_CORS: true
     DISCOURSE_CORS_ORIGIN: '*'
     # 设置discourse相对路径
     DISCOURSE_RELATIVE_URL_ROOT: /community
   
   volumes:
     - volume:
         host: /path/to/web-only
         guest: /shared
     - volume:
         host: /path/to/web-only/log/var-log
         guest: /var/log
     - volume:
         host: /path/to/web-only/asserts
         guest: /var/www/discourse/public/assets
   
   hooks:
     after_code:
       - exec:
           cd: $home/plugins
           cmd:
             - git clone https://github.com/discourse/docker_manager.git
             # 安装cas登录插件，安装好后需要后续的配置
             - git clone https://github.com/tyl3k/cas_sso.git
             - git clone https://github.com/discourse/discourse-solved.git
             # 安装sitemap插件
             - git clone https://github.com/discoursehosting/discourse-sitemap.git
   
   run:
     - exec: echo "Beginning of custom commands"
     # 为资源创建软链接，保证二级url的discourse能找到资源 
     - exec: mkdir /var/www/discourse/public/community
     - exec: ln -s /var/www/discourse/public/assets /var/www/discourse/public/community/assets
     - exec: ln -s /var/www/discourse/public/backups /var/www/discourse/public/community/backups
     - exec: ln -s /var/www/discourse/public/images /var/www/discourse/public/community/images
     - exec: ln -s /var/www/discourse/public/javascripts /var/www/discourse/public/community/javascripts
     - exec: ln -s /var/www/discourse/public/plugins /var/www/discourse/public/community/plugins
     - exec: ln -s /var/www/discourse/public/service-worker.js /var/www/discourse/public/community/service-worker.js
     - exec: ln -s /var/www/discourse/public/uploads /var/www/discourse/public/community/uploads
     # 修改digest邮件模板退订链接
     - exec: sed -i "s/host: Discourse.base_url_no_prefix/host: Discourse.base_url/" /var/www/discourse/app/views/user_notifications/digest.html.erb
     - exec: echo "End of custom commands"
     - exec: awk -F\# '{print $1;}' ~/.ssh/authorized_keys | awk 'BEGIN { print "Authorized SSH keys for this container:"; } NF>=2 {print $NF;}'
   

6. 依次启动容器：

   ./launcher start redis
   ./launcher start postgresql
   ./launcher start discourse

7. 创建管理员帐号：

   1. 进入discourse容器：

      ./launcher enter discousre

   2. 创建管理员帐号：

      rake admin:create

      按照提示输入邮箱和密码，即可创建拥有管理员权限的帐号

      

8. 在浏览器中输入服务器ip地址加80端口即可访问discourse，可用创建好的帐号登录。