offline virtualenv 시 문제.

인터넷이 끊겨있는 우분투(ubuntu)환경에서 virtualenv 를 실행하여 새로운 환경을 만들려 하였을 때, 에러가 발생했다.

python2 -m virtualenv venv

venv 라는 이름의 direcotry 에 가상 파이썬2 환경을 만드려 하는 명령이다.

  File "/usr/share/python-wheels/pip-9.0.1-py2.py3-none-any.whl/pip/index.py", line 423, in find_all_candidates

    for page in self._get_pages(url_locations, project_name):

  File "/usr/share/python-wheels/pip-9.0.1-py2.py3-none-any.whl/pip/index.py", line 568, in _get_pages

    page = self._get_page(location)

  File "/usr/share/python-wheels/pip-9.0.1-py2.py3-none-any.whl/pip/index.py", line 683, in _get_page

    return HTMLPage.get_page(link, session=self.session)

  File "/usr/share/python-wheels/pip-9.0.1-py2.py3-none-any.whl/pip/index.py", line 792, in get_page

    "Cache-Control": "max-age=600",

  File "/home/me/myapp/venv277/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 501, in get

    return self.request('GET', url, **kwargs)

  File "/usr/share/python-wheels/pip-9.0.1-py2.py3-none-any.whl/pip/download.py", line 386, in request

    return super(PipSession, self).request(method, url, *args, **kwargs)

  File "/home/me/myapp/venv277/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 488, in request

    resp = self.send(prep, **send_kwargs)

  File "/home/me/myapp/venv277/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 609, in send

    r = adapter.send(request, **kwargs)

  File "/home/me/myapp/venv277/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/adapter.py", line 47, in send

    resp = super(CacheControlAdapter, self).send(request, **kw)

  File "/home/me/myapp/venv277/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/adapters.py", line 423, in send

    timeout=timeout

  File "/home/me/myapp/venv277/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 643, in urlopen

    _stacktrace=sys.exc_info()[2])

  File "/home/me/myapp/venv277/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/util/retry.py", line 315, in increment

    total -= 1

TypeError: unsupported operand type(s) for -=: 'Retry' and 'int'

----------------------------------------

...Installing setuptools, pkg_resources, pip, wheel...done.

Traceback (most recent call last):

  File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main

    "__main__", fname, loader, pkg_name)

  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code

    exec code in run_globals

  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 2375, in <module>

    main()

  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 724, in main

    symlink=options.symlink)

  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 992, in create_environment

    download=download,

  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 922, in install_wheel

    call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)

  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 817, in call_subprocess

    % (cmd_desc, proc.returncode))

OSError: Command /home/me/myapp/venv277/bin/python2 - setuptools pkg_resources pip wheel failed with error code 2

한참 원인을 찾다가, 에러메시지를 다시 천천히 읽어보니, pip 모듈에서 requests 모듈을 통해 무언가 http 통신으로 어떤 파일을 받아오려고 한다는 것을 알아차렸다. 문제가 발생한 환경을 인터넷이 안 되는 환경이다.

검색하여보니 virtualenv 를 실행할 대, download 하여 패키지를 설치하는 시도를 하지 않도록 하는 옵션이 있어, 적용하여 가사환경 생성에 성공하였다.

python2 -m virtualenv --no-download venv