mongodb - 我无法使用容器 docker 连接到 mongo

Question

我是 docker 的新手所以我跟进了一个教程here ，第 6、7 和 8 部分，以便在项目中使用和学习 docker。

问题是当我使用 docker-compose.yml 在我的笔记本电脑上构建图像时，我的 stack_server 可以连接到 mongo。

但如果我从 docker hub 构建镜像，然后在我的笔记本电脑上单独拉取和运行它们，我的 stack_server 无法连接到 mongo。

这是我的 docker-compose.yml :

client:
    build: ./client
    restart: always
    ports:
      - "80:80"
    links:
      - server
mongo:
  image: mongo
  command: --smallfiles
  restart: always
  ports:
    - "27017:27017"
server:
    build: ./server
    restart: always
    ports:
     - "8080:8080"
    links:
     - mongo

但是，我的 stack_client 可以连接到 stack_server。

和我运行图像的命令(我的图像是公开的)

docker-run -i -t -p 27017:27017 mongo
docker-run -i -t -p 80:80 mik3fly4steri5k/stack_client 
docker-run -i -t -p 8080:8080 mik3fly4steri5k/stack_server

和我的错误日志

bryan@debian-dev7:~$ sudo docker run -i -t -p 8080:8080 mik3fly4steri5k/stack_server
[sudo] password for bryan: 
Express server listening on 8080, in development mode
connection error: { Error: connect ECONNREFUSED 127.0.0.1:27017
    at Object._errnoException (util.js:1021:11)
    at _exceptionWithHostPort (util.js:1043:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1175:14)
  name: 'MongoError',
  message: 'connect ECONNREFUSED 127.0.0.1:27017' }

这是我的 stack_server dockerfile

FROM node:latest

# Set in what directory commands will run
WORKDIR /home/app

# Put all our code inside that directory that lives in the container
ADD . /home/app

# Make sure NPM is not cached, remove everything first
RUN rm -rf /home/app/node_modules/npm \
 && rm -rf  /home/app/node_modules

# Install dependencies
RUN npm install

# Tell Docker we are going to use this port
EXPOSE 8080

# The command to run our app when the container is run
CMD ["node", "app.js"]

第一个解决方案但已弃用

docker-run -i -t -p 27017:27017 --name:mongo mongo
docker-run -i -t -p 80:80 mik3fly4steri5k/stack_client 
docker-run -i -t -p 8080:8080 --link mongo:mongo mik3fly4steri5k/stack_server

当我运行我的 stack_server 时，我必须在我的 mongo 上输入一个名称并将它与参数 --link 链接

docker documentation

Warning: The --link flag is a deprecated legacy feature of Docker. 
It may eventually be removed. 
Unless you absolutely need to continue using it,
we recommend that you use user-defined networks to facilitate communication 
between two containers instead of using --link.
One feature that user-defined networks do not support that you can do with 
--link is sharing environmental variables between containers.
However, you can use other mechanisms such as volumes to share environment 
variables between containers in a more controlled way.

Answer 1

使用以下命令运行您的 stack_server

sudo docker run -i -t -p 8080:8080 --link mongo:mongo mik3fly4steri5k/stack_server

注意:--link 标志已弃用