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diskimage-builder/diskimage_builder/elements/rhel/environment.d/10-rhel-distro-name.bash

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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
2019-03-17 09:54:38 +00:00
export DISTRO_NAME=rhel
export DIB_RELEASE=${DIB_RELEASE:-8}
Support secure-boot bootloader where possible As of grub2 >= 2.02-95 on redhat family distros, calling grub2-install on an EFI partition will fail with: "this utility cannot be used for EFI platforms because it does not support UEFI Secure Boot." This version of grub is now in centos8-stream and non-eus repos of RHEL-8. It is not currently possible to build whole-disk UEFI images on these distros, and when this package is promoted this will also affect centos8 and RHEL-8 eus. The grub maintainers made this change because the grub2-install generated /boot/efi/EFI/BOOT/BOOTX64.EFI will never be capable of booting with Secure Boot. This change defines a $EFI_BOOT_DIR for every distro element. When directory /boot/efi/$EFI_BOOT_DIR exists a grub.cfg file in will be generated there. This change also installs the shim package on redhat family distros, which installs a copy of the shim bootloader to /boot/efi/EFI/BOOT/BOOTX64.EFI. Using centos as an example, this allows UEFI to boot the shim /boot/efi/EFI/BOOT/BOOTX64.EFI which then chains to /boot/efi/EFI/centos/grubx64.efi. If /boot/efi/$EFI_BOOT_DIR doesn't exist (such as for Ubuntu, /boot/efi/EFI/ubuntu) the current behaviour of running grub-install to generate /boot/efi/EFI/BOOT/BOOTX64.EFI will continue. For distros such as Ubutnu where packaging does not populate /boot/efi/EFI/ubuntu with .efi files, secure boot can be added in the future by copying .efi files to /boot/efi/EFI/ubuntu and copying the shim file to /boot/efi/EFI/BOOT/BOOTX64.EFI. Change-Id: I90925218ff2aa4c4daffcf86e686b6d98d6b0f21
2021-03-05 03:35:21 +00:00
export EFI_BOOT_DIR="EFI/redhat"
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