97c01e48ed
Currently we have all our elements and library files in a top-level directory and install them into <root>/share/diskimage-builder/[elements|lib] (where root is either / or the root of a virtualenv). The problem with this is that editable/development installs (pip -e) do *not* install data_files. Thus we have no canonical location to look for elements -- leading to the various odd things we do such as a whole bunch of guessing at the top of disk-image-create and having a special test-loader in tests/test_elements.py so we can run python unit tests on those elements that have it. data_files is really the wrong thing to use for what are essentially assets of the program. data_files install works well for things like config-files, init.d files or dropping documentation files. By moving the elements under the diskimage_builder package, we always know where they are relative to where we import from. In fact, pkg_resources has an api for this which we wrap in the new diskimage_builder/paths.py helper [1]. We use this helper to find the correct path in the couple of places we need to find the base-elements dir, and for the paths to import the library shell functions. Elements such as svc-map and pkg-map include python unit-tests, which we do not need tests/test_elements.py to special-case load any more. They just get found automatically by the normal subunit loader. I have a follow-on change (I69ca3d26fede0506a6353c077c69f735c8d84d28) to move disk-image-create to a regular python entry-point. Unfortunately, this has to move to work with setuptools. You'd think a symlink under diskimage_builder/[elements|lib] would work, but it doesn't. [1] this API handles stuff like getting files out of .zip archive modules, which we don't do. Essentially for us it's returning __file__. Change-Id: I5e3e3c97f385b1a4ff2031a161a55b231895df5b
1.0 KiB
redhat-common
Image installation steps common to RHEL, CentOS, and Fedora.
Requirements:
If used to build an image form a cloud image compress with xz (the default in centos), this element uses "unxz" to decompress the image. Depending on your distro you may need to install either the xz or xz-utils package.
Environment Variables
- DIB_LOCAL_IMAGE
-
- Required
-
No
- Default
-
None
- Description
-
Use the local path of a qcow2 cloud image. This is useful in that you can use a customized or previously built cloud image from diskimage-builder as input. The cloud image does not have to have been built by diskimage-builder. It should be a full disk image, not just a filesystem image.
- Example
-
DIB_LOCAL_IMAGE=rhel-guest-image-7.1-20150224.0.x86_64.qcow2
- DIB_DISABLE_KERNEL_CLEANUP
-
- Required
-
No
- Default
-
0
- Description
-
Specify if kernel needs to be cleaned up or not. When set to true, the bits that cleanup old kernels will not be executed.
- Example
-
DIB_DISABLE_KERNEL_CLEANUP=1