diskimage-builder/diskimage_builder/elements/centos7/environment.d/10-centos7-distro-name.bash

export DISTRO_NAME=centos7
export DIB_RELEASE=7
export EFI_BOOT_DIR="EFI/centos"

# Useful for elements that work with fedora (dnf) & centos
export YUM=${YUM:-yum}
Initial centos7 support Initial support for a centos7 image. This is separate to rhel7 because the major differences are things like repo and image locations, which are always going to be different. We should merge any real changes into the redhat-common layers. Apart from the added support files in centos7/*, the other change is mostly modifications to redhat-common's extract-image to handle different partition layouts of the centos7 image. Change-Id: I943abe5ff0a803f36eda266a79af0d9220edcae7 2014-07-03 01:49:38 +00:00			`export DISTRO_NAME=centos7`
centos7; use numeric DIB_RELEASE With the introduction of centos 8 we have constructs like if [[ $DISTRO =~ (centos\|fedora) && $DIB_RELEASE -ge 8 ]] This is intended to match the "centos7" element (from the =~) but it was missed that this is setting the DIB_RELEASE to "GenericCloud". I think it makes more sense for this to be a numeric release, and makes constructs like above work. There really isn't any other type of image to choose here; thus we move it into a new, centos7 specific variable. Note that when the centos 8 images are available, we want to move to a generic "centos" element that will handle both 7 and 8 together (same as rhel) based on DIB_RELEASE and deprecate centos7; this works with that environment too. Change-Id: I2e6b7848070d6452c0563e2a122447627c6e6bf7 2019-10-14 03:25:26 +00:00			`export DIB_RELEASE=7`
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/$EFI_BOOT_DIR doesn't exist (such as for Ubuntu, /boot/efi/EFI/ubuntu) the current behaviour of running grub-install to generate /boot/efi/EFI/BOOT/BOOTX64.EFI will continue. For distros such as Ubutnu where packaging does not populate /boot/efi/EFI/ubuntu with .efi files, secure boot can be added in the future by copying .efi files to /boot/efi/EFI/ubuntu and copying the shim file to /boot/efi/EFI/BOOT/BOOTX64.EFI. Change-Id: I90925218ff2aa4c4daffcf86e686b6d98d6b0f21 2021-03-05 03:35:21 +00:00			`export EFI_BOOT_DIR="EFI/centos"`
Export YUM variable in centos bases Other fedora/centos elements can use the YUM variable, already set in some base elements (fedora, centos-minimal). This commit also exports it for centos/centos7. Set a fallback value in pip-and-virtualenv element. Change-Id: I681d77b924be035c81043bb34c72ec5f859e7108 Closes-Bug: 1598087 2016-07-01 10:14:38 +00:00
			`# Useful for elements that work with fedora (dnf) & centos`
			`export YUM=${YUM:-yum}`
Allow disto-specific mirror settings Most of our distros support DIB_DISTRIBUTION_MIRROR for setting the mirror to be used when building. This has a major downside where if someone would like to create a static configuration for building various distro images it cannot set DIB_DISTRIBUTION_MIRROR (think of the case where we want to run our tests). By adding support for DIB_$DISTRO_DISTRIBUTION_MIRROR this problem is resolved. Change-Id: I92964b17ec3e47cf97e3a3091f054b2a205ac768 2016-12-08 23:30:56 +00:00