python - 如何将EC2 ip地址动态添加到Django ALLOWED_HOSTS

Question

<分区>

Answer 1

下面的代码片段将找到与您的 EC2 实例关联的公共(public) IP 地址或弹性 IP 地址，并将其附加到 ALLOWED_HOSTS。

• 安装 PyCurl

  pip install pycurl
  

• Python 3

  import pycurl
  from io import BytesIO
  
  # Determine Public IP address of EC2 instance
  buffer = BytesIO()
  c = pycurl.Curl()
  c.setopt(c.URL, 'checkip.amazonaws.com')
  c.setopt(c.WRITEDATA, buffer)
  c.perform()
  c.close()
  # Body is a byte string, encoded. Decode it first.
  ALLOWED_HOSTS.append(buffer.getvalue().decode('iso-8859-1').strip())
  

• python 2

  import pycurl
  from StringIO import StringIO
  
  buffer = StringIO()
  c = pycurl.Curl()
  c.setopt(c.URL, 'checkip.amazonaws.com')
  c.setopt(c.WRITEDATA, buffer)
  c.perform()
  c.close()
  # In Python 2, we can cast the return value to
  # string without knowing the exact encoding.
  ALLOWED_HOSTS.append(str(buffer.getvalue()).strip())