Revert "Disable eventlet monkey-patching of DNS"

This reverts commit 6219f94b3a1103a16bd5f16ed8ffdd41a85280e1.

This commit seems to cause keystone auth to hang when using
Keystone w/ Swift.

Fixes LP Bug #1178646.

Change-Id: Ieb94a29b3129847c84a02c8a526611f125f21ea0

1 files changed, 1 insertions, 14 deletions

diff --git a/bin/keystone-all b/bin/keystone-all
index 64c6342b..2fdc8c7a 100755
--- a/bin/keystone-all
+++ b/bin/keystone-all
@@ -2,25 +2,12 @@
 # vim: tabstop=4 shiftwidth=4 softtabstop=4
 
 import greenlet
+import eventlet
 import logging
 import os
 import signal
 import sys
 
-# NOTE(mikal): All of this is because if dnspython is present in your
-# environment then eventlet monkeypatches socket.getaddrinfo() with an
-# implementation which doesn't work for IPv6. What we're checking here is
-# that the magic environment variable was set when the import happened.
-if ('eventlet' in sys.modules and
-        os.environ.get('EVENTLET_NO_GREENDNS', '').lower() != 'yes'):
-    raise ImportError('eventlet imported before keystone-all '
-                      '(env var set to %s)'
-                      % os.environ.get('EVENTLET_NO_GREENDNS'))
-
-os.environ['EVENTLET_NO_GREENDNS'] = 'yes'
-
-import eventlet
-
 # If ../keystone/__init__.py exists, add ../ to Python search path, so that
 # it will override what happens to be installed in /usr/(local/)lib/python...
 possible_topdir = os.path.normpath(os.path.join(os.path.abspath(__file__),