AWS Elastic Beanstalk部署502网关错误

Question

我将单个Docker容器部署到AWS Elastic Beanstalk。

当我访问该站点时，它返回502错误，这使我认为Docker容器内的端口未暴露。

这些是我的设置：

Dockerrun.aws.json：

{
"AWSEBDockerrunVersion": "1",
"Volumes": [
  {
    "ContainerDirectory": "/var/app",
    "HostDirectory": "/var/app"
  }
],
"Logging": "/var/eb_log",
"Ports": [
  {
    "containerPort": 80
  }
]
}

Docker文件

FROM ubuntu:16.04

# Install Python Setuptools
RUN rm -fR /var/lib/apt/lists/*
RUN apt-get update
RUN apt-get install -y software-properties-common
RUN add-apt-repository ppa:jonathonf/python-3.6
RUN apt-get update && apt-get install -y python3-pip
RUN apt-get install -y python3.6
RUN apt-get install -y python3-dev
RUN apt-get install -y libpq-dev
RUN apt-get install libffi-dev
RUN apt-get install -y git

# Add and install Python modules
ADD requirements.txt /src/requirements.txt
RUN cd /src; pip3 install -r requirements.txt

# Bundle app source
ADD . /src

# Expose
EXPOSE  80

# Run
CMD ["python3", "/src/app.py"]

app.py

from flask import Flask
app = Flask(__name__)

@app.route("/")
def hello():
    return "Hello World!"

# run the app.
if __name__ == "__main__":
    # Setting debug to True enables debug output. This line should be
    # removed before deploying a production app.
    app.debug = False
    app.run(port=80)

我在docker-ps.log中看到了这一点：

CONTAINER ID        IMAGE               COMMAND                 CREATED             
STATUS              PORTS               NAMES
ead221e6d2c6        2eb62af087be        "python3 /src/app.py"   34 minutes ago      Up 34 minutes       80/tcp              peaceful_lamport

和：

/var/log/eb-docker/containers/eb-current-app/ead221e6d2c6-stdouterr.log
-------------------------------------
* Running on http://127.0.0.1:80/ (Press CTRL+C to quit)

和这个错误：

2017/07/06 05:57:36 [error] 15972#0: *10 connect() failed (111: Connection refused) while connecting to upstream, client: 172.5.154.225, server: , request: "GET / HTTP/1.1", upstream: "http://172.17.0.3:80/", host: "bot-platform.us-west-2.elasticbeanstalk.com"

我究竟做错了什么？

Answer 1

查找完错误代码后，我认为您可以尝试以下解决方案。 看来您必须编辑弹性beantalk的nginx配置。 与其将文件nginx.config添加到弹性魔豆目录.ebextionsions。 将以下内容放入文件中：

files:
  "/etc/nginx/conf.d/000_my_config.conf":
  content: |
    upstream nodejsserver {
      server 127.0.0.1:8081;
      keepalive 256;
    }

    server {
      listen 8080;

      location / {
        proxy_pass  http://nodejsserver;
        proxy_set_header   Connection "";
        proxy_http_version 1.1;
        proxy_set_header        Host            $host;
        proxy_set_header        X-Real-IP       $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
      }

      location /myconfig {
        proxy_pass http://my_proxy_pass_host;
      }
    }

也许您需要稍作调整，但这似乎是解决问题的正确方法。 如果谷歌你的错误，你会发现很多关于如何才能解决这个问题，调整nginx的略有不同的解决方案。