使用 OpenShift 默认 Python S2I 构建器和 gunicorn 测试 OpenShift 3 部署的示例 Py...

# Flask Sample Application This repository provides a sample Python web application implemented using the Flask web framework and hosted using ``gunicorn``. It is intended to be used to demonstrate deployment of Python web applications to OpenShift 3. ## Implementation Notes This sample Python application relies on the support provided by the default S2I builder for deploying a WSGI application using the ``gunicorn`` WSGI server. The requirements which need to be satisfied for this to work are: * The WSGI application code file needs to be named ``wsgi.py``. * The WSGI application entry point within the code file needs to be named ``application``. * The ``gunicorn`` package must be listed in the ``requirements.txt`` file for ``pip``. In addition, the ``.s2i/environment`` file has been created to allow environment variables to be set to override the behaviour of the default S2I builder for Python. * The environment variable ``APP_CONFIG`` has been set to declare the name of the config file for ``gunicorn``. ## Deployment Steps To deploy this sample Python web application from the OpenShift web console, you should select ``python:2.7``, ``python:3.3``, ``python:3.4`` or ``python:latest``, when using _Add to project_. Use of ``python:latest`` is the same as having selected the most up to date Python version available, which at this time is ``python:3.4``. The HTTPS URL of this code repository which should be supplied to the _Git Repository URL_ field when using _Add to project_ is: * https://github.com/OpenShiftDemos/os-sample-python.git If using the ``oc`` command line tool instead of the OpenShift web console, to deploy this sample Python web application, you can run: ``` oc new-app https://github.com/OpenShiftDemos/os-sample-python.git ``` In this case, because no language type was specified, OpenShift will determine the language by inspecting the code repository. Because the code repository contains a ``requirements.txt``, it will subsequently be interpreted as including a Python application. When such automatic detection is used, ``python:latest`` will be used. If needing to select a specific Python version when using ``oc new-app``, you should instead use the form: ``` oc new-app python:2.7~https://github.com/OpenShiftDemos/os-sample-python.git ```