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Update build script to facilitate iso builds #241

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Oct 4, 2024
Merged

Update build script to facilitate iso builds #241

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21c891b
Update build script to facilitate iso builds
rahulbabu95 Sep 14, 2024
4dca5b0
Only build ISO when LINUXKIT_ISO var is set
rahulbabu95 Oct 1, 2024
ae5eb27
Add LINUXKIT_ISO to README:
jacobweinstock Oct 4, 2024
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1 change: 1 addition & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -137,6 +137,7 @@ The most important environment variables are:
- `HOOK_LK_CONTAINERS_OCI_BASE`: OCI base coordinates for the LinuxKit containers.
- `CACHE_DIR`: directory where the build system will cache downloaded files. Relative to the project root.
- `USE_LATEST_BUILT_KERNEL`: set this to `yes` to use the latest built kernel from `quay.io/tinkerbell/hook-kernel`.
- `LINUXKIT_ISO`: set this to `yes` to build an ISO image instead of a kernel and initrd.
- exclusively for the `qemu` command:
- `TINK_SERVER=<ip>`: the IP address of the Tinkerbell GRPC server. No default.
- `MAC=<mac>`: the MAC address of the machine that will be provisioned. No default.
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20 changes: 20 additions & 0 deletions bash/linuxkit.sh
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Expand Up @@ -83,6 +83,26 @@ function linuxkit_build() {
declare lk_cache_dir="${CACHE_DIR}/linuxkit"
mkdir -p "${lk_cache_dir}"

# if LINUXKIT_ISO is set, build an ISO with the kernel and initramfs
if [[ -n "${LINUXKIT_ISO}" ]]; then
declare lk_iso_output_dir="out"
mkdir -p "${lk_iso_output_dir}"

declare -a lk_iso_args=(
"--docker"
"--arch" "${kernel_info['DOCKER_ARCH']}"
"--format" "iso-efi-initrd"
"--name" "hook"
"--cache" "${lk_cache_dir}"
"--dir" "${lk_iso_output_dir}"
"hook.${inventory_id}.yaml" # the linuxkit configuration file
)

log info "Building Hook ISO with kernel ${inventory_id} using linuxkit: ${lk_iso_args[*]}"
"${linuxkit_bin}" build "${lk_iso_args[@]}"
return 0
fi

declare -a lk_args=(
"--docker"
"--arch" "${kernel_info['DOCKER_ARCH']}"
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