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目標：在我的RHEL服務器上安裝python 2.7.14和python 3.6並使用pip2/pip3來管理這兩個版本。使用pip管理RHEL7上的兩個python 2.7版本
注意：儘管此服務器缺少互聯網連接，我可以單獨下載並將它們上傳到此服務器。
我最近在虛擬機上安裝了RHEL 7.2，默認安裝了python 2.7.5。 我決定通過並行安裝2.7.14（使用make altinstall方法並保持現有的2.7.5完整）來升級。我還打算在將來將所有現有的Python代碼移植到它上面，同時安裝了python 3.6。
當我嘗試爲Python 2.7.14或任何庫（如稍後會看到的）安裝pip時，就會出現問題。
我第一次做PIP的使用easy_install：
[[email protected] bin]# easy_install pip
Searching for pip
Best match: pip 9.0.1
Adding pip 9.0.1 to easy-install.pth file
Installing pip script to /usr/local/bin
Installing pip3 script to /usr/local/bin
Installing pip3.5 script to /usr/local/bin
Using /usr/local/lib/python3.6/site-packages
Processing dependencies for pip
Finished processing dependencies for pip
這將安裝PIP爲Python 2.7.5和3.6而不是蟒蛇2.7.14。
接下來，我下載了get-pip.py：
這被安裝罰款蟒蛇2.7.5而不是蟒蛇2.7.14：
[[email protected] pshah]# python get-pip.py
Collecting pip
Downloading pip-9.0.1-py2.py3-none-any.whl (1.3MB)
100% |████████████████████████████████| 1.3MB 978kB/s
Collecting wheel
Downloading wheel-0.30.0-py2.py3-none-any.whl (49kB)
100% |████████████████████████████████| 51kB 9.2MB/s
Installing collected packages: pip, wheel
Successfully installed pip-9.0.1 wheel-0.30.0
[[email protected] pshah]# /usr/local/bin/python2.7 get-pip.py
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting pip
Could not fetch URL https://pypi.python.org/simple/pip/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping
Could not find a version that satisfies the requirement pip (from versions:)
No matching distribution found for pip
這似乎是一個缺乏的SSL圖書館。
首先，我沒有安裝這個用yum：
[[email protected] pshah]# yum install openssl
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Package 1:openssl-1.0.1e-42.el7_1.9.x86_64 already installed and latest version
Nothing to do
[[email protected] pshah]# yum install openssl-devel
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Package 1:openssl-devel-1.0.1e-42.el7_1.9.x86_64 already installed and latest version
Nothing to do
其次，這似乎是目前的Python 2.7.5
[[email protected] pshah]# python
Python 2.7.5 (default, Oct 11 2015, 17:47:16)
[GCC 4.8.3 20140911 (Red Hat 4.8.3-9)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import ssl
>>>
我是壓倒一切的太多了？我是否應該使用2.7.5和python 3.6的默認安裝？
我知道virtualenv可能是一個解決方案，但我不知道如何使它與Apache執行Python腳本的工作。
謝謝。