Set EVENTLET_NO_GREENDNS for IPv6 and dnspython compat

If dnspython is present it causes socket.getaddrinfo() to be
monkeypatched wiht code that does not work with IPv6. To get
around this, the EVENTLET_NO_GREENDNS environment variable
must be set before importing eventlet.

This is resolved in the eventlet upstream code [1], but has not
yet been released. Once our requirements have been raised past
the 0.19.0 release with a version that includes this change we
can remove this workaround.

[1] 52b09becac

Change-Id: Id9fe265d67f6e9ea5090bebcacae4a7a9150c5c2
Closes-bug: #1471049
This commit is contained in:
Sean McGinnis 2016-11-11 13:19:07 -06:00
parent 6e9b15c036
commit 4f31fb7962
1 changed files with 21 additions and 0 deletions

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#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Root Cinder module."""
import os
# Ensure compatibility issues are covered with pythondsn
os.environ['EVENTLET_NO_GREENDNS'] = 'yes'
# Make sure eventlet is loaded
import eventlet # noqa