ee46e2f9b7
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
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====
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rhel
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====
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Use RHEL cloud images as the baseline for built disk images.
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Because RHEL base images are not publicly available, it is necessary to first
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download the RHEL cloud image from the Red Hat Customer Portal and pass the
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path to the resulting file to disk-image-create as the ``DIB_LOCAL_IMAGE``
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environment variable.
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The cloud image can be found at (login required):
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RHEL8: https://access.redhat.com/downloads/content/479/ver=/rhel---8/8.0/x86_64/product-software
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RHEL7: https://access.redhat.com/downloads/content/69/ver=/rhel---7/7.1/x86_64/product-downloads
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Then before running the image build, define DIB_LOCAL_IMAGE (replace the file
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name with the one downloaded, if it differs from the example):
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.. code-block:: bash
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export DIB_LOCAL_IMAGE=rhel-8.0-x86_64-kvm.qcow2
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The downloaded file will then be used as the basis for any subsequent image
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builds.
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For further details about building RHEL images, see the rhel-common and
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redhat-common element README files.
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Environment Variables
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---------------------
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DIB_LOCAL_IMAGE
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:Required: Yes
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:Default: None
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:Description: The RHEL 8 base image you have downloaded. See the element
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description above for more details.
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:Example: ``DIB_LOCAL_IMAGE=/tmp/rhel8-cloud.qcow2``
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