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 information,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 information.
>>> 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 information,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 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
