python – 构建Docker镜像时的InsecurePlatformWarning

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我在构建Docker镜像时收到此警告：

/usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79: 
      InsecureplatformWarning: A true SSLContext object is not available. 
      This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. 
      For more @R_772_4036@ion,see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.

几个来源(如InsecureplatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately)说,pip install pyopenssl ndg-httpsclient pyasn1将解决这个问题.但是一旦pip尝试安装pyopenssl,我就会收到警告.

这是我的Dockerfile：

FROM ubuntu:14.04

# Install packages
RUN apt-get update && apt-get install -y \
    git \
    libMysqLclient-dev \
    MysqL-server \
    Nginx \
    python-dev \
    python-MysqLdb \
    python-setuptools \
    supervisor \
    vim
RUN easy_install pip

# Handle urllib3 InsecureplatformWarning
RUN apt-get install -y libffi-dev libssl-dev
RUN pip install pyopenssl ndg-httpsclient pyasn1

# ...more

似乎在运行pip：http://github.com/pypa/pip/issues/2681时会出现此警告,但在安装pyopenssl ndg-httpsclient pyasn1时,使用python请求时不会收到警告.

例如,如果我构建这个Dockerfile：

FROM ubuntu:14.04

# Install packages
RUN apt-get update && apt-get install -y \
    git \
    libMysqLclient-dev \
    MysqL-server \
    Nginx \
    python-dev \
    python-MysqLdb \
    python-setuptools \
    supervisor \
    vim
RUN easy_install pip
RUN pip install requests

然后在容器内运行：

root@b2759f79f947:/# python
Python 2.7.6 (default,Jun 22 2015,17:58:13) 
[GCC 4.8.2] on linux2
Type "Help","copyright","credits" or "license" for more @R_772_4036@ion.

>>> import requests

>>> url = "https://www.digicert.com/"

>>> r = requests.get(url)

/usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:100: InsecureplatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more @R_772_4036@ion,see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.

  InsecureplatformWarning

如你所见,我得到了警告.
但是如果我在Dockerfile中添加这些行：

RUN apt-get install -y libffi-dev libssl-dev
RUN pip install pyopenssl ndg-httpsclient pyasn1

并运行相同的python命令,我不再收到警告.

如果您在安装pyopenssl时确实不想要警告,可以设置环境变量：PYTHONWARNINGS =“ignore：一个真正的SSLContext对象”,如下所示：https://github.com/pypa/pip/pull/3109

你的Dockerfile看起来像这样：

FROM ubuntu:14.04

# Install packages
RUN apt-get update && apt-get 香港vps install -y \
    git \
    libMysqLclient-dev \
    MysqL-server \
    Nginx \
    python-dev \
    python-MysqLdb \
    python-setuptools \
    supervisor \
    vim
RUN easy_install pip

# Handle urllib3 InsecureplatformWarning
RUN apt-get install -y libffi-dev libssl-dev
ENV PYTHONWARNINGS="ignore:a true SSLContext object"
RUN pip install pyopenssl ndg-httpsclient pyasn1

另一个解决方案是将python升级到2.7.9

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