27a326dafb
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 |
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| environment.d | ||
| test-elements | ||
| yum.repos.d | ||
| element-deps | ||
| element-provides | ||
| README.rst | ||
============== centos-minimal ============== Create a minimal image based on CentOS Use of this element will require 'yum' and 'yum-utils' to be installed on Ubuntu and Debian. Nothing additional is needed on Fedora or CentOS. By default this builds CentOS 7 images. Set ``DIB_RELEASE`` to ``7``, ``8`` or ``8-stream`` to explicitly select the release. For CentOS 7, by default, ``DIB_YUM_MINIMAL_CREATE_INTERFACES`` is set to enable the creation of ``/etc/sysconfig/network-scripts/ifcfg-eth[0|1]`` scripts to enable DHCP on the ``eth0`` & ``eth1`` interfaces. If you do not have these interfaces, or if you are using something else to setup the network such as cloud-init, glean or network-manager, you would want to set this to ``0``. For CentOS 8 and CentOS 8 Stream, this is set to ``0`` by default as the system uses NetworkManager by default.