281 lines
13 KiB
YAML
281 lines
13 KiB
YAML
#
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# .gitea/workflows/gitea-main-ci.yaml
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#
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# Builds the diskless fleet release: a fleet-generic UKI + erofs/dm-verity
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# root, packaged as a FROM-scratch OCI artifact image (see CLAUDE.md and
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# docs/diskless-fleet-design-v2.pdf). Packer kickstart-installs a throwaway
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# Rocky 9 build VM (qemu), builds the --no-hostonly initramfs, then the
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# shell-local post-processors extract artifacts, build the UKI (ukify), and
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# build+push the OCI release image.
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#
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# Signed when the SB_KEY/SB_CERT secrets are set; otherwise an UNSIGNED (lab)
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# build where build-oci.sh emits its loud unsigned-UKI warning. Signing runs
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# shell-local on the runner (not in the build VM); the key is staged to
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# RUNNER_TEMP and shredded after. See docs/secure-boot-keys.md.
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#
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# Required Gitea repo secrets:
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# REGISTRY_USERNAME - registry user for `oci_image` (oci_push=true)
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# REGISTRY_TOKEN - registry password/token
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# SSH_AUTHORIZED_KEY - public key for the sudo admin user; empty => no admin
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# user + root left unlocked (lab). Set it to lock root.
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# SB_KEY, SB_CERT - Secure Boot signing: the `db` PRIVATE key (PEM) + its
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# cert (PEM). Empty => unsigned lab build. PK/KEK are NOT
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# here (offline/HSM). Generate per docs/secure-boot-keys.md.
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#
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# Runner: needs KVM (qemu accelerator=kvm) and the build-host tooling installed
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# below (libguestfs, erofs-utils, cryptsetup, jq, ukify, buildah).
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#
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name: Build Diskless UKI
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run-name: ${{ gitea.actor }} builds the diskless fleet UKI (${{ gitea.ref_name }})
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on:
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push:
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branches:
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- "**" # every branch — feature branches get a branch-name+sha tag
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tags:
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- "v*" # tag push -> clean semver tag (v1.2.3 -> 1.2.3)
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# One build per ref at a time; a newer push to the same branch cancels the
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# in-flight build (each build is a ~17-min VM run, so don't stack them).
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concurrency:
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group: uki-build-${{ gitea.ref }}
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cancel-in-progress: true
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env:
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PRODUCT_VERSION: "1.15.4" # Packer version
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PACKER_LOG: "1"
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OCI_IMAGE: "git.bitasylum.org/audiobuzz/fleet-boot"
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NIC_DRIVERS: "ice mlx5_core"
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# NVMe/TCP discovery address baked into the (immutable) UKI cmdline
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# (rd.nvmf.discover). For the open-network test this is the lab serving host's
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# IP so the initramfs needs no DNS resolution. Production: switch to a
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# per-environment DNS name (e.g. nvme.fleet.lab) resolved at boot so one UKI
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# works across environments — the serving stack's dnsmasq resolves it.
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NVMET_TRADDR: "192.168.50.10"
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# URL the fullscreen Chromium kiosk loads at boot. Defaults to the kiosk SPA
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# (serving/kiosk-app) reverse-proxied by the boot HTTP server at /kiosk/;
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# boot.fleet.lab resolves to the serving host via the stack's dnsmasq. Empty
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# disables the kiosk.
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KIOSK_URL: "http://boot.fleet.lab/kiosk/"
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# Plymouth boot splash. "false" => verbose console boot (rhgb quiet NOT baked;
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# plymouth.enable=0 instead) — kept OFF in CI while the network-manager port is
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# being bench-verified, so the boot chain stays debuggable. Flip to "true" to
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# ship the graphical splash once boot is trusted. (Plymouth is in the image
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# either way; this only flips the cmdline.)
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BOOT_SPLASH: "true"
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# DISA STIG hardening (OpenSCAP + SSG, diskless/UKI/kiosk tailoring). Report-only
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# in CI: the scan + deviations report are published as artifacts; the build is
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# never failed on score. Set "false" to skip hardening (boot/secure-path bench).
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ENABLE_STIG: "true"
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# ===========================================================================
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# TEMPORARY: 802.1X + MACsec are DISABLED for this build (rd.dot1x=0) so the
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# UKI / rootfs / NVMe-oF boot path can be validated on an OPEN switch port.
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# The resulting UKI has NO link authentication or encryption — test networks
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# only. Set back to "false" to restore the full secure boot chain.
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# ===========================================================================
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DISABLE_DOT1X: "true"
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jobs:
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uki-build:
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name: Diskless UKI Build
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runs-on: ubuntu-latest
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container:
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image: git.bitasylum.org/audiobuzz/ubuntu-act-runner-qemu:main
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options: --device /dev/kvm
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steps:
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-
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name: Checkout
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uses: actions/checkout@v6
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-
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name: Derive image version
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id: vars
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# This becomes the OCI tag (build-oci.sh tags ${oci_image}:${image_version})
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# and the artifact dir name. Two cases:
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# - tag push (refs/tags/v1.2.3) -> "1.2.3" (release)
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# - branch push (refs/heads/<name>) -> "<name>-<sha7>" (dev image)
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# The branch name is sanitized to the OCI tag charset
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# ([A-Za-z0-9._-], <=128, no leading . or -): e.g. feature/foo -> feature-foo,
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# giving feature-foo-ab12cd3. So every branch yields a uniquely tagged,
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# pushed image you can boot/test without clobbering main or releases.
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run: |
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short_sha="$(echo "${GITHUB_SHA}" | cut -c1-7)"
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if [ "${GITHUB_REF#refs/tags/}" != "$GITHUB_REF" ]; then
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version="${GITHUB_REF#refs/tags/}"
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version="${version#v}"
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else
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branch="${GITHUB_REF#refs/heads/}"
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# invalid chars -> '-'; trim leading '.'/'-'; cap length headroom for -sha7
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safe_branch="$(printf '%s' "$branch" \
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| sed -e 's#[^A-Za-z0-9._-]#-#g' -e 's#^[.-]*##' | cut -c1-100)"
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[ -n "$safe_branch" ] || safe_branch="branch"
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version="${safe_branch}-${short_sha}"
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fi
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echo "image_version=${version}" >> "$GITHUB_OUTPUT"
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echo "Building image_version=${version}"
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-
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name: Install build-host tooling
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# Tools the shell-local post-processors run on the RUNNER (not the VM):
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# libguestfs (virt-*), erofs-utils (mkfs.erofs), cryptsetup
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# (veritysetup), jq, systemd-ukify (ukify), sbsigntool (sbsign — used by
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# ukify to sign the UKI when SB_KEY/SB_CERT are set), buildah (OCI), plus
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# qemu + shellcheck for the lint gate.
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# NB: the Debian/Ubuntu package is sbsigntool (singular); on Fedora/RHEL
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# it's sbsigntools (plural).
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#
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# libguestfs builds a supermin appliance on first use, which needs a
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# kernel + modules present on the runner (incl. xfs, to read the build
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# VM's xfs root). The runner container ships none, so install one and
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# make /boot readable (Ubuntu ships vmlinuz mode 0600).
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run: |
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sudo apt-get update
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# systemd-boot-efi ships the UKI EFI stub
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# (/usr/lib/systemd/boot/efi/linuxx64.efi.stub) that ukify wraps the
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# kernel+initrd+cmdline around. It's only a *recommends* of
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# systemd-ukify, so --no-install-recommends would otherwise skip it.
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sudo apt-get install -y --no-install-recommends \
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qemu-system-x86 qemu-utils libguestfs-tools linux-image-generic \
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erofs-utils cryptsetup-bin jq systemd-ukify systemd-boot-efi \
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sbsigntool buildah shellcheck attr
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sudo chmod 0644 /boot/vmlinuz-* 2>/dev/null || true
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-
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name: Setup Packer
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uses: hashicorp/setup-packer@main
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with:
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version: ${{ env.PRODUCT_VERSION }}
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-
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name: Shell lint gate
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# Matches CLAUDE.md conventions; dracut hooks + post-processor scripts.
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run: |
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bash -n files/dracut/95dot1x-macsec/*.sh scripts/*.sh
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# SC1091 (sourced /lib/dracut-lib.sh) and SC2154 (dracut-injected
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# $moddir) are dracut-module false positives. They're also in
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# .shellcheckrc, but excluded explicitly here so the gate doesn't
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# depend on the runner's shellcheck finding that rc file.
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shellcheck --exclude=SC1091,SC2154 files/dracut/95dot1x-macsec/*.sh scripts/*.sh
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-
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name: packer init
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run: packer init .
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-
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name: packer validate
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run: packer validate .
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-
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name: Verify libguestfs appliance (fast gate)
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# Fail in ~1 min if supermin can't build/boot the appliance, instead of
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# after the ~17-min VM build when extract-artifacts.sh first runs virt-ls.
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env:
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LIBGUESTFS_BACKEND: direct
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run: libguestfs-test-tool
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-
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name: Registry login
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# Enables oci_push=true in the build step below.
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run: |
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buildah login \
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--username "${{ secrets.PACKAGE_USER }}" \
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--password "${{ secrets.PACKAGE_TOKEN }}" \
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git.bitasylum.org
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-
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name: Materialize Secure Boot signing material
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# sb_key/sb_cert are consumed by ukify as FILE PATHS (not values), and the
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# signing post-processor runs shell-local on THIS runner (not in the build
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# VM), so write the secrets to runner-temp files and pass their paths. The
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# `db` PRIVATE key is the only signing key here; PK/KEK stay offline (see
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# docs/secure-boot-keys.md). If SB_KEY is unset, this no-ops and the build
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# falls back to an UNSIGNED lab UKI (the loud warning stays).
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if: ${{ secrets.SB_KEY != '' }}
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env:
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SB_KEY: ${{ secrets.SB_KEY }} # db private key (PEM) — secret
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SB_CERT: ${{ secrets.SB_CERT }} # db cert (PEM) — public, kept as a secret for convenience
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run: |
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umask 077
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d="$RUNNER_TEMP/sb"; mkdir -p "$d"
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printf '%s\n' "$SB_KEY" > "$d/db.key"
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printf '%s\n' "$SB_CERT" > "$d/db.crt"
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echo "SB_KEY_FILE=$d/db.key" >> "$GITHUB_ENV"
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echo "SB_CERT_FILE=$d/db.crt" >> "$GITHUB_ENV"
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echo "Secure Boot signing material staged (signed UKI build)."
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-
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name: Materialize Secure Boot enrollment certs
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# PUBLIC PK/KEK/db .auth files baked into the image for fleet-sb-enroll.
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# They're binary, so stored base64 in repo secrets; decode into
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# files/secureboot/keys/ (gitignored) before the build picks them up. If
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# the secrets are unset this no-ops and the helper ships without keys
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# (reports "no baked keys" until supplied). NOT signing keys — see
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# docs/secure-boot-keys.md; PK/KEK private keys never come near CI.
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if: ${{ secrets.SB_DB_AUTH_B64 != '' }}
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env:
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SB_PK_AUTH_B64: ${{ secrets.SB_PK_AUTH_B64 }}
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SB_KEK_AUTH_B64: ${{ secrets.SB_KEK_AUTH_B64 }}
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SB_DB_AUTH_B64: ${{ secrets.SB_DB_AUTH_B64 }}
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run: |
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d=files/secureboot/keys; mkdir -p "$d"
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printf '%s' "$SB_PK_AUTH_B64" | base64 -d > "$d/PK.auth"
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printf '%s' "$SB_KEK_AUTH_B64" | base64 -d > "$d/KEK.auth"
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printf '%s' "$SB_DB_AUTH_B64" | base64 -d > "$d/db.auth"
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echo "Staged PK/KEK/db .auth for in-image enrollment:"; ls -l "$d"/*.auth
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-
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name: packer build (UKI + OCI release image)
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# Signed when SB_KEY/SB_CERT secrets are set (paths exported above);
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# UNSIGNED lab build (loud warning) when they're empty. sb_key/sb_cert are
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# PATHS, never values — see the materialize step and docs/secure-boot-keys.md.
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run: |
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packer build -color=false -on-error=abort \
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-var image_version="${{ steps.vars.outputs.image_version }}" \
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-var nic_drivers="${{ env.NIC_DRIVERS }}" \
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-var oci_image="${{ env.OCI_IMAGE }}" \
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-var oci_push=true \
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-var disable_dot1x=${{ env.DISABLE_DOT1X }} \
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-var nvmet_traddr="${{ env.NVMET_TRADDR }}" \
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-var ssh_authorized_key="${{ secrets.SSH_AUTHORIZED_KEY }}" \
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-var sb_key="${SB_KEY_FILE:-}" \
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-var sb_cert="${SB_CERT_FILE:-}" \
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-var kiosk_url="${{ env.KIOSK_URL }}" \
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-var boot_splash=${{ env.BOOT_SPLASH }} \
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-var enable_stig=${{ env.ENABLE_STIG }} \
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.
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-
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name: Shred Secure Boot signing key
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# Remove the private key from the runner FS even if the build failed.
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# (RUNNER_TEMP is also wiped per-job on ephemeral runners — belt + braces.)
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if: always()
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run: shred -u "$RUNNER_TEMP/sb/db.key" 2>/dev/null || rm -f "$RUNNER_TEMP/sb/db.key" 2>/dev/null || true
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-
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name: STIG deviations report (report-only)
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# The build downloaded the post-remediation scan (stig-arf.xml +
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# stig-report.html) into artifacts/<version>/. Turn the ARF into a
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# readable deviations report. Never fails the build (report-only).
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if: ${{ env.ENABLE_STIG == 'true' }}
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run: |
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dir="artifacts/${{ steps.vars.outputs.image_version }}"
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if [ -s "$dir/stig-arf.xml" ]; then
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bash scripts/stig-deviations.sh "$dir/stig-arf.xml" "$dir/stig-deviations.md" || true
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echo "----- STIG deviations (summary) -----"
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sed -n '1,40p' "$dir/stig-deviations.md" || true
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else
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echo "no STIG ARF found (enable_stig off or scan failed) — skipping report"
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fi
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-
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name: Publish STIG report artifacts
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if: ${{ env.ENABLE_STIG == 'true' }}
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uses: actions/upload-artifact@v3
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with:
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name: stig-report-${{ steps.vars.outputs.image_version }}
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path: |
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artifacts/${{ steps.vars.outputs.image_version }}/stig-report.html
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artifacts/${{ steps.vars.outputs.image_version }}/stig-arf.xml
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artifacts/${{ steps.vars.outputs.image_version }}/stig-deviations.md
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if-no-files-found: warn
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