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Clark Boylan 5b5b78bf59 Set router solicitation delay with using NM
The linux kernel and NetworkManager fight each other over control for
interface management when router advertisements are in use. Long story
short if the linux kernel configures a network interface for ipv6
before NetworkManager attempts to manage that interface then NM will
ignore the interface and not configure ipv4 on it.

This can happen because the kernel is configured to send router
advertisements solicitations which result in router advertisements which
the kernel uses to configure the interface(s). There is a default of a 1
second delay before sending the solicitation which in many cases is long
enough that NM has started before then. However, in slower environments
like those used for testing with qemu this isn't long enough.

Some testing by hand indicates that 15 seconds is about right so
increase the delay to 15 seconds via sysctl.conf.

Note this may increase boot times in ipv6 only environments (though it
is hard to be sure due to how systemd starts everything at once and does
socket activation and the like).

Change-Id: I475a253091cbaf63687b91c748c31a6753bb0f57
2019-07-10 08:33:17 -07:00
.zuul.d Enable nodepool testing for opensuse 15.1 2019-06-27 19:59:45 +02:00
bin Check source-repository-* files for trailing newline 2017-12-08 14:24:57 +11:00
contrib Native zuulv3 tests 2018-10-29 12:46:15 +11:00
diskimage_builder Set router solicitation delay with using NM 2019-07-10 08:33:17 -07:00
doc Mailing lists change openstack-dev to openstack-discuss 2019-07-02 07:23:06 +00:00
playbooks Replace nodepool func jobs 2019-06-27 08:59:52 -07:00
releasenotes Add DIB_UBUNTU_KERNEL to ubuntu-minimal 2019-06-20 10:18:23 -07:00
roles OpenDev Migration Patch 2019-04-19 19:26:30 +00:00
tests Update test coverage for openSUSE/-minimal to 15.1 2019-06-13 09:20:40 +02:00
.gitignore Import legacy playbooks 2017-10-17 10:41:30 +11:00
.gitreview OpenDev Migration Patch 2019-04-19 19:26:30 +00:00
.testr.conf package-installs: provide for skip from env var 2018-11-30 10:02:47 +11:00
babel.cfg Make it possible for openstack-CI to run tests 2013-02-04 22:26:17 -08:00
bindep.txt Merge "bindep: exclude zypper from debian-stretch" 2019-05-31 09:10:45 +00:00
LICENSE Fix copyrights for HP work. 2012-11-15 16:20:32 +13:00
lower-constraints.txt add lower-constraints job 2018-04-06 01:23:10 -04:00
pylint.cfg Refactor: use lazy logging 2017-05-30 14:39:58 +10:00
README.rst Sync Sphinx requirement 2019-06-18 23:29:52 +08:00
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setup.cfg [Core] Change openstack-dev to openstack-discuss. 2019-01-09 11:40:30 +01:00
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tox.ini Fix broken requirements url 2019-04-30 09:31:44 +01:00

Image building tools for OpenStack
==================================

``diskimage-builder`` is a flexible suite of components for building a
wide-range of disk images, filesystem images and ramdisk images for
use with OpenStack.

This repository has the core functionality for building such images,
both virtual and bare metal. Images are composed using `elements`;
while fundamental elements are provided here, individual projects have
the flexibility to customise the image build with their own elements.

For example::

  $ DIB_RELEASE=trusty disk-image-create -o ubuntu-trusty.qcow2 vm ubuntu

will create a bootable Ubuntu Trusty based ``qcow2`` image.

``diskimage-builder`` is useful to anyone looking to produce
customised images for deployment into clouds. These tools are the
components of `TripleO <https://wiki.openstack.org/wiki/TripleO>`__
that are responsible for building disk images. They are also used
extensively to build images for testing OpenStack itself, particularly
with `nodepool
<https://docs.openstack.org/infra/system-config/nodepool.html>`__.
Platforms supported include Ubuntu, CentOS, RHEL and Fedora.

Full documentation, the source of which is in ``doc/source/``, is
published at:

* https://docs.openstack.org/diskimage-builder/latest/

Copyright
=========

Copyright 2012 Hewlett-Packard Development Company, L.P.
Copyright (c) 2012 NTT DOCOMO, INC.

All Rights Reserved.

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.