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[Chris Dent <cdent+lp@xxxxxxxxxxxxx>]

Public bug reported:

The nova-api-wsgi script provides a quick and easy way to run the nova-
api from the command line. In at least python3.6 it fails with:

ERROR nova Traceback (most recent call last):
ERROR nova   File "/usr/local/bin/nova-api-wsgi", line 50, in <module>
ERROR nova     server.serve_forever()
ERROR nova   File "/usr/lib/python3.6/socketserver.py", line 232, in serve_forever
ERROR nova     with _ServerSelector() as selector:
ERROR nova   File "/usr/lib/python3.6/selectors.py", line 348, in __init__
ERROR nova     self._poll = select.poll()
ERROR nova AttributeError: module 'select' has no attribute 'poll'
ERROR nova 

this is because eventlet is being monkey patched too late, see
https://stackoverflow.com/questions/51524589/attributeerror-module-
select-has-no-attribute-poll

importing eventlet at the top of the script fixes it.

It's not clear this is necessarily worth fixing, as running nova-api
this way is not really a thing. I only did because I was trying to
confirm that a problem was not the result of uwsgi.

But report it for sake of discussion.

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: api

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https://bugs.launchpad.net/bugs/1795502

Title:
  running nova-api-wsgi from the command line fails in python3.6

Status in OpenStack Compute (nova):
  New

Bug description:
  The nova-api-wsgi script provides a quick and easy way to run the
  nova-api from the command line. In at least python3.6 it fails with:

  ERROR nova Traceback (most recent call last):
  ERROR nova   File "/usr/local/bin/nova-api-wsgi", line 50, in <module>
  ERROR nova     server.serve_forever()
  ERROR nova   File "/usr/lib/python3.6/socketserver.py", line 232, in serve_forever
  ERROR nova     with _ServerSelector() as selector:
  ERROR nova   File "/usr/lib/python3.6/selectors.py", line 348, in __init__
  ERROR nova     self._poll = select.poll()
  ERROR nova AttributeError: module 'select' has no attribute 'poll'
  ERROR nova 

  this is because eventlet is being monkey patched too late, see
  https://stackoverflow.com/questions/51524589/attributeerror-module-
  select-has-no-attribute-poll

  importing eventlet at the top of the script fixes it.

  It's not clear this is necessarily worth fixing, as running nova-api
  this way is not really a thing. I only did because I was trying to
  confirm that a problem was not the result of uwsgi.

  But report it for sake of discussion.

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