Enforce Dir + File permissions everywhere + Retry about bandersnatch

[d2gex]

Just popped in at PyPa weekend in London. I'll have a look at this if no-on is on it right now

[fried]

Traceback (most recent call last):
  File "bandersnatch/package.py", line 118, in sync
  File "bandersnatch/package.py", line 258, in sync_simple_page
  File "/usr/local/fbcode/gcc-5-glibc-2.23/lib/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)
  File "bandersnatch/utils.py", line 68, in rewrite
  File "/usr/local/fbcode/gcc-5-glibc-2.23/lib/python3.6/tempfile.py", line 549, in NamedTemporaryFile
    (fd, name) = _mkstemp_inner(dir, prefix, suffix, flags, output_type)
  File "/usr/local/fbcode/gcc-5-glibc-2.23/lib/python3.6/tempfile.py", line 260, in _mkstemp_inner
    fd = _os.open(file, flags, 0o600)
PermissionError: [Errno 13] Permission denied: '/data/pypi/web/simple/c/c/.index.html.31v8csbx'

The issue was the web/simple/c/c directory was 000, setting it to 755 fixed the issue and the sync continued. This is most likely some gluster interaction issue and maybe not an issue with bandersnatch per se.

If this exception raised all the way to the top, I could remediate it in my code that calls synchronize, And just call synchronize again.

[cooperlees]

I think this was all GlusterFS fun and games. Closing unless someone sees it again.