如何在docker中部署平均堆栈应用程序？

Question

如何在 docker 中部署平均堆栈应用程序？
我在 mongodb 连接中有错误。所以意味着堆栈 Web 应用程序没有响应。

这是我的步骤：

1. 拉了image from DockerHub：

   sudo docker pull crissi/airlineinsurance
   

2. 经过验证的图片

   sudo docker images
   

3. 运行 mongodb 容器

   sudo docker run -d -p 27017:27017 --name airlineInsurance -d mongo
   

4. 验证它正在运行：

   sudo docker ps -l
   

5. 运行应用程序容器

   sudo docker run -d -P crissi/airlineinsurance
   

6. 验证人：

   sudo docker ps -l
   

7. 检查日志

   sudo docker logs 8efba551fdc6
   

结果日志如下：

[nodemon] 1.11.0
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node server.js`
Server running at http://127.0.0.1:9000
Server running at https://127.0.0.1:9030

/app/node_modules/mongodb/lib/server.js:261
        process.nextTick(function() { throw err; })
                                      ^
MongoError: failed to connect to server [localhost:27017] on first connect
    at Pool.<anonymous> (/app/node_modules/mongodb-core/lib/topologies/server.js:313:35)
    at emitOne (events.js:96:13)
    at Pool.emit (events.js:188:7)
    at Connection.<anonymous> (/app/node_modules/mongodb-core/lib/connection/pool.js:271:12)
    at Connection.g (events.js:291:16)
    at emitTwo (events.js:106:13)
    at Connection.emit (events.js:191:7)
    at Socket.<anonymous> (/app/node_modules/mongodb-core/lib/connection/connection.js:165:49)
    at Socket.g (events.js:291:16)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at emitErrorNT (net.js:1281:8)
    at _combinedTickCallback (internal/process/next_tick.js:74:11)
    at process._tickCallback (internal/process/next_tick.js:98:9)
[nodemon] app crashed - waiting for file changes before starting...

我已包含 DockerFile 供您参考

  # Tells the Docker which base image to start.
  FROM node

  # Adds files from the host file system into the Docker container.  
  ADD . /app

  # Sets the current working directory for subsequent instructions
  WORKDIR /app

   RUN npm install
   RUN npm install -g bower
   RUN bower install --allow-root
   RUN npm install -g nodemon

   #expose a port to allow external access
   EXPOSE 9030

   # Start mean application
   CMD ["nodemon", "server.js"] 

Answer 1

这取决于您如何定义 Dockerfile。
由于您的应用涉及多个进程（您的应用 + mongodb），您可以use supervisor to launch both。

使用supervisord.conf 来查看this example，例如：

[supervisord]
nodaemon=true

[program:mongod]
command=/usr/bin/mongod --smallfiles
stdout_logfile=/var/log/supervisor/%(program_name)s.log
stderr_logfile=/var/log/supervisor/%(program_name)s.log
autorestart=true

[program:nodejs]
command=nodejs /opt/app/server/server.js 

用您自己的应用程序替换 nodejs 命令。