openstack/diskimage-builder
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b536dbba8e3977956f5d7def64a05e0c81fbea61
diskimage-builder/diskimage_builder/elements/rhel/README.rst
Nir Magnezi ee46e2f9b7 Add version-less RHEL element for RHEL7 and RHEL8 
Make a version-less RHEL element to handle both '7' and '8' DIB_RELEASE.
The element usage should align with other elements which operate in the
same way such as the Fedora element.

Additionally, this patch adds support for RHEL8 that operates with
Python 3.
As of now, users of diskimage-builder will still be able to use the
'rhel7' element, or migrate to 'rhel' and specify their respective
DIB_RELEASE value.

* mount the xfs file-system for extraction as read-only.  vaguely
  based on explaination in [1] and the fact we only read the image
  data into a tar, so can ignore this.

    XFS (dm-1): Superblock has unknown read-only compatible features (0x4) enabled.

* Use the redhat system python as the dib-python version.  dib was
  ahead of it's time making an abstracted python interpreter for
  system work ;) the system python should work for running the various
  dib element scripts.

[1] https://unix.stackexchange.com/questions/247550/unmountable-xfs-filesystem

Redhat-Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1700253
Co-Authored-By: Ian Wienand <iwienand@redhat.com>
Change-Id: I90540675c70bb475d9db2ae24f81c648a31f3f95
2019-05-29 11:28:53 +03:00

1.2 KiB
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rhel

Use RHEL cloud images as the baseline for built disk images.

Because RHEL base images are not publicly available, it is necessary to first download the RHEL cloud image from the Red Hat Customer Portal and pass the path to the resulting file to disk-image-create as the DIB_LOCAL_IMAGE environment variable.

The cloud image can be found at (login required): RHEL8: https://access.redhat.com/downloads/content/479/ver=/rhel---8/8.0/x86_64/product-software RHEL7: https://access.redhat.com/downloads/content/69/ver=/rhel---7/7.1/x86_64/product-downloads

Then before running the image build, define DIB_LOCAL_IMAGE (replace the file name with the one downloaded, if it differs from the example):

export DIB_LOCAL_IMAGE=rhel-8.0-x86_64-kvm.qcow2

The downloaded file will then be used as the basis for any subsequent image builds.

For further details about building RHEL images, see the rhel-common and redhat-common element README files.

Environment Variables

DIB_LOCAL_IMAGE
Required

Yes

Default

None

Description

The RHEL 8 base image you have downloaded. See the element description above for more details.

Example

DIB_LOCAL_IMAGE=/tmp/rhel8-cloud.qcow2

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