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3.8 KiB
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85 lines
3.8 KiB
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..
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Licensed under the Apache License, Version 2.0 (the "License"); you may
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not use this file except in compliance with the License. You may obtain
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a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations
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under the License.
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Building JEOS images for use with Heat
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======================================
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Heat's full functionality can only be used when launching cloud images that have
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the heat-cfntools_ package installed.
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This document describes some options for creating a heat-cfntools enabled image
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for yourself.
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.. _heat-cfntools: https://github.com/openstack/heat-cfntools
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Building an image with diskimage-builder
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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diskimage-builder_ is a tool for customizing cloud images.
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tripleo-image-elements_ is a collection of diskimage-builder elements related
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to the TripleO_ project. It includes an element for heat-cfntools which can be
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used to create heat-enabled images.
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.. _diskimage-builder: https://github.com/openstack/diskimage-builder
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.. _tripleo-image-elements: https://github.com/openstack/tripleo-image-elements
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.. _TripleO: https://wiki.openstack.org/wiki/TripleO
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Install the tool (preferably in a virtualenv) and fetch the elements::
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pip install git+https://github.com/openstack/diskimage-builder.git
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git clone https://github.com/openstack/tripleo-image-elements.git
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To create a heat-cfntools enabled image with the current release of Fedora x86_64::
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export ELEMENTS_PATH=tripleo-image-elements/elements
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disk-image-create vm fedora heat-cfntools -a amd64 -o fedora-heat-cfntools
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The image may then be pushed to glance, e.g::
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source ~/.openstack/keystonerc
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glance image-create --name fedora-heat-cfntools --is-public true --disk-format qcow2 --container-format bare < fedora-heat-cfntools.qcow2
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To create a heat-cfntools enabled image with the current release of Ubuntu i386::
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export ELEMENTS_PATH=tripleo-image-elements/elements
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disk-image-create vm ubuntu heat-cfntools -a i386 -o ubuntu-heat-cfntools
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If you are creating your own images you should consider creating golden images
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which contain all the packages required for the stacks that you launch. You can do
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this by writing your own diskimage-builder elements and invoking those elements
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in the call to disk-image-create.
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This means that the resulting heat templates only need to modify configuration
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files. This will speed stack launch time and reduce the risk of a transient
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package download failure causing the stack launch to fail.
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To create an image that contains hooks needed for SoftwareConfig and SoftwareDeployment,
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you can follow the steps bellow to build a fedora based image::
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pip install git+https://git.openstack.org/openstack/diskimage-builder.git
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git clone https://git.openstack.org/openstack/tripleo-image-elements.git
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git clone https://git.openstack.org/openstack/heat-templates.git
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export ELEMENTS_PATH=tripleo-image-elements/elements:heat-templates/hot/software-config/elements
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disk-image-create vm \
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fedora selinux-permissive \
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heat-config \
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os-collect-config \
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os-refresh-config \
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os-apply-config \
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heat-config-cfn-init \
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heat-config-puppet \
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heat-config-script \
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-o fedora-software-config.qcow2
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The image may then be pushed to glance, e.g::
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source ~/.openstack/keystonerc
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glance image-create --name=fedora-software-config --is-public=true --disk-format=qcow2 --container-format=bare < fedora-software-config.qcow2
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