用python在docker上设置rabbitMQ
我对docker相当陌生，我正在学习rabbitMQ。 到目前为止，我已经能够在我的ubuntu vm上以python libary pika的forms运行rabbitMQ。 这工作没有任何问题，但我现在把它放到docker工人的一个小应用程序，不起作用。
这个问题似乎是在设置和所有的方式失败了这一行的代码：
connection = pika.BlockingConnection(pika.ConnectionParameters( host=HOST, port=80, credentials=credentials)) 正在导入的variables：
USER = "test" PASS = "testpass1" HOST = "dockerhost"
文件：
import pika from settings import USER, PASS, HOST def send(message): message = str(message) print 'trying: credentials = pika.PlainCredentials(username=USER, password=PASS)' try: credentials = pika.PlainCredentials(username=USER, password=PASS) except Exception: print 'Failed' print str(Exception) return 'Failed on: credentials = pika.PlainCredentials(username=USER, password=PASS) \n' + str(Exception.message) print 'trying: connection = pika.BlockingConnection(pika.ConnectionParameters(host=HOST, port=80, credentials=credentials))' try: connection = pika.BlockingConnection(pika.ConnectionParameters( host=HOST, port=80, credentials=credentials)) except Exception: print 'Failed' print str(Exception) return 'Failed on: connection = pika.BlockingConnection(pika.ConnectionParameters(host=HOST, port=80, credentials=credentials)) \n' + str(Exception.message) channel = connection.channel() channel.queue_declare(queue='hello') channel.basic_publish(exchange='', routing_key='hello', body=message) connection.close() return "Message Sent"
在这个代码中，它总是失败：
connection = pika.BlockingConnection(pika.ConnectionParameters( host=HOST, port=80, credentials=credentials))
最后是Dockerfile：
FROM ubuntu MAINTAINER Will Mayger RUN echo "deb http://archive.ubuntu.com/ubuntu/ $(lsb_release -sc) main universe" >> /etc/apt/sources.list RUN apt-get update RUN apt-get install -y tar git curl nano wget dialog net-tools build-essential RUN apt-get install -y python python-dev python-distribute python-pip RUN git clone https://github.com/CanopyCloud/microservice-python RUN pip install -r /microservice-python/requirements.txt EXPOSE 80 WORKDIR /microservice-python/ CMD sudo rabbitmqctl add_user test testpass1 CMD sudo rabbitmqctl add_vhost myvhost CMD sudo rabbitmqctl set_permissions -p myvhost test ".*" ".*" ".*" CMD sudo rabbitmq-server CMD python /microservice-python/server.py
有关所有文件的更多信息，请访问： https ： //github.com/CanopyCloud/microservice-python
你的Dockerfile不正确。
试试这个：
FROM ubuntu MAINTAINER Will Mayger RUN echo "deb http://archive.ubuntu.com/ubuntu/ $(lsb_release -sc) main universe" >> /etc/apt/sources.list RUN apt-get update RUN apt-get install -y tar git curl nano wget dialog net-tools build-essential RUN apt-get install -y python python-dev python-distribute python-pip RUN git clone https://github.com/CanopyCloud/microservice-python RUN pip install -r /microservice-python/requirements.txt EXPOSE 80 WORKDIR /microservice-python/ RUN sudo rabbitmqctl add_user test testpass1 RUN sudo rabbitmqctl add_vhost myvhost RUN sudo rabbitmqctl set_permissions -p myvhost test ".*" ".*" ".*" RUN sudo rabbitmq-server CMD python /microservice-python/server.py
它不是/不正确的原因是因为你在Dockerfile中定义了多个CMD 。 我非常确定，docker只会在结果图像中设置最后一个命令，而CMD不会“运行”作为图像构build过程的一部分; RUN 。
CMD设置图像作为docker run <image>一部分运行的“命令”
此外，您似乎已经将RabbitMQ和您的Python应用程序组合到一个Docker Image / Container中; 这不是真正的最好的事情在这里做。
你应该把它分成两个图像。
- 一个RabbitMQ图像/容器
- 您的应用程序图像/容器
并通过docker run --link使用“docker链接” – 链接将容器链接在一起。
你可以很容易地为你的Python APP构build一个Image，作为你的Python App的一个单独的Dockerfile ：
FROM python:2.7-onbuild RUN pip install -r requirements.txt ADD server.py /app WORKDIR /app CMD ["python", "./server.py"]