102 lines
4.4 KiB
Markdown
102 lines
4.4 KiB
Markdown
With this element other elements can register their installation source by
|
|
placing their details in the file source-repository-\*. An example
|
|
of an element "custom-element" that wants to retrieve the ironic source
|
|
from git and pbr from a tarball would be
|
|
|
|
*File : elements/custom-element/source-repository-ironic*
|
|
|
|
#<name> <type> <destination> <location> [<ref>]
|
|
# <ref> defaults to master if not specified
|
|
ironic git /usr/local/ironic git://git.openstack.org/openstack/ironic.git
|
|
|
|
*File : elements/custom-element/source-repository-pbr*
|
|
|
|
pbr tar /usr/local/pbr http://tarballs.openstack.org/pbr/pbr-master.tar.gz
|
|
|
|
diskimage-builder will then retrieve the sources specified and place them
|
|
at the directory \<destination\>
|
|
|
|
A number of environment variables can be set by the process calling
|
|
diskimage-builder which can change the details registered by the element, these are
|
|
|
|
DIB_REPOTYPE_<name> : change the registered type
|
|
DIB_REPOLOCATION_<name> : change the registered location
|
|
DIB_REPOREF_<name> : change the registered reference
|
|
|
|
For example if you would like diskimage-builder to get ironic from a local
|
|
mirror you could set DIB_REPOLOCATION_ironic=git://localgitserver/ironic.git
|
|
|
|
*As you can see above, the \<name\> of the repo is used in several bash
|
|
variables. In order to make this syntactically feasible, any characters not in
|
|
the set \[A-Za-z0-9_\] will be converted to \_*
|
|
|
|
*For instance, a repository named "diskimage-builder" would set a variable called
|
|
"DIB_REPOTYPE_diskimage_builder"*
|
|
|
|
|
|
Alternatively if you would like to use the keystone element and build an image with
|
|
keystone from a stable branch then you would set DIB_REPOREF_keystone=stable/grizzly
|
|
|
|
If you wish to build an image using code from a gerrit review, you can set
|
|
DIB_REPOLOCATION_<name> and DIB_REPOREF_<name> to the values given by gerrit in the
|
|
fetch/pull section of a review. For example:
|
|
|
|
DIB_REPOLOCATION_nova=https://review.openstack.org/openstack/nova
|
|
DIB_REPOREF_nova=refs/changes/72/61972/8
|
|
|
|
Additionally, the lines in the source-repository scripts are eval'd, so they
|
|
may contain environment variables.
|
|
|
|
Git sources will be cloned to \<destination\>
|
|
|
|
Tarballs will be extracted to \<destination\>. Tarballs should contain a
|
|
single topleval directory, regardless of the name of this top level directory
|
|
it will be renamed to \<destination\>
|
|
|
|
The package type indicates the element should install from packages onto the
|
|
root filesystem of the image build during the install.d phase.
|
|
|
|
Git and Tarballs are treated as source installs. If the element provides an
|
|
<element-name>-source-install directory under it's install.d hook directory,
|
|
symlinks to the scripts in that directory will be created under install.d for
|
|
the image build. Alternatively for the package install type, if the element
|
|
provides an <element-name>-package-install directory, symlinks will be created
|
|
for those scripts instead.
|
|
|
|
For example, the nova element would provide:
|
|
|
|
nova/install.d/nova-package-install/74-nova
|
|
nova/install.d/nova-source-install/74-nova
|
|
|
|
source-repositories will create the following symlink for the package install
|
|
type:
|
|
|
|
install.d/74-nova -> nova-package-install/74-nova
|
|
|
|
Or, for the source install type:
|
|
|
|
install.d/74-nova -> nova-source-install/74-nova
|
|
|
|
All other scripts that exist under install.d for an element will be executed as
|
|
normal. This allows common install code to live in a script outside of
|
|
<element-name>-package-install or <element-name>-source-install.
|
|
|
|
If multiple elements register a source location with the same <destination>
|
|
then source-repositories will exit with an error. Care should therefore be taken
|
|
to only use elements together that download source to different locations.
|
|
|
|
The repository paths built into the image are stored in
|
|
etc/dib-source-repositories, one repository per line. This permits later review
|
|
of the repositories (by users or by other elements).
|
|
|
|
The repository names and types are written to an environment.d hook script at
|
|
01-source-repositories-environment. This allows later hook scripts during the
|
|
install.d phase to know which install type to use for the element.
|
|
|
|
The base url for all git repositories can be set by use of:
|
|
|
|
DIB_GITREPOBASE
|
|
|
|
So setting DIB\_GITREPOBASE=https://github.com/ when the repo location is set
|
|
to http://git.openstack.org/openstack/nova.git will result in use of the
|
|
https://github.com/openstack/nova.git repository.
|