不同用户python path 权限问题

问题背景

root 用户可以运行pip install mkdocs
但gitlab-runner 运行pip install mkdocs 则下列错误

pip install mkdocs
Traceback (most recent call last):
  File "/bin/pip", line 7, in <module>
    from pip._internal import main
ImportError: No module named 'pip._internal'

经过排查，发现是gitlab-runner 在某些python path 的权限问题

解决方法

1. cat /bin/pip 查看使用的python 代码

#!/usr/bin/python3

# -*- coding: utf-8 -*-
import re
import sys

from pip._internal import main

if __name__ == '__main__':
    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
    sys.exit(main())

可知，使用的是python3

查看path 路径

切换到root 用户
然后在命令行运行：

[root@test75vm1 ~]# python3
Python 3.4.5 (default, May 29 2017, 15:17:55) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/lib64/python34.zip', '/usr/lib64/python3.4', '/usr/lib64/python3.4/plat-linux', '/usr/lib64/python3.4/lib-dynload', '/usr/lib64/python3.4/site-packages', '/usr/lib/python3.4/site-packages']

check path 路径的权限

ls -rlt /usr/lib/python3.4/site-packages

修改python path 路径的权限

ls -rlt 发现有写目录是没有执行权限的。
执行命令

chmod 755 -R /usr/lib64/python3.4 /usr/lib64/python3.4/plat-linux /usr/lib64/python3.4/lib-dynload /usr/lib64/python3.4/site-packages /usr/lib/python3.4/site-packages