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Merge pull request #267 from digitalrebar/make-sledgehammer-bootable-…
…from-a-local-drive Make sledgehammer bootable from a local drive
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| --- | ||
| Name: write-sledgehammer-to-disk | ||
| Description: "Write the discovery image to a local disk for test boot purposes" | ||
| Tasks: | ||
| - erase-hard-disks-for-os-install | ||
| - write-sledgehammer-to-disk |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,174 @@ | ||
| --- | ||
| Name: write-sledgehammer-to-disk | ||
| Description: Writes the current Sledgehammer image to the local disk. | ||
| Meta: | ||
| feature-flags: "sane-exit-codes" | ||
| Prerequisites: | ||
| - erase-hard-disks-for-os-install | ||
| RequiredParams: | ||
| - operating-system-disk | ||
| Templates: | ||
| - Name: "prepare-simple-boot-partition" | ||
| Contents: | | ||
| #!/bin/bash | ||
| . helper | ||
| set -x | ||
| drive="/dev/{{.Param "operating-system-disk"}}" | ||
| [[ -L $drive ]] && drive="$(readlink -f "$drive")" | ||
| efi() { [[ -d /sys/firmware/efi ]]; } | ||
| parted() { command parted -a optimal -s "$drive" "$@"; } | ||
| if efi; then | ||
| parted mklabel gpt | ||
| else | ||
| parted mklabel msdos | ||
| fi | ||
| parted mkpart primary fat32 1 2GB | ||
| parted toggle 1 boot | ||
| partprobe "$drive" | ||
| mkfs.vfat "$drive"1 | ||
| mount -o rw "$drive"1 /boot || exit 1 | ||
| - Name: "place-sledgehammer-in-boot-partition" | ||
| Contents: | | ||
| #!/bin/bash | ||
| . helper | ||
| set -x | ||
| mkdir /tmp/sl1 | ||
| kp="{{.Env.PathFor "http" .Env.Kernel}}" | ||
| cd /boot | ||
| curl -fgLO "$kp" | ||
| cd /tmp/sl1 | ||
| {{range $initrd := .Env.Initrds}} | ||
| curl -fgL {{$.Env.PathFor "http" $initrd}} |gunzip |cpio -idm | ||
| {{end}} | ||
| curl -fgLO "${kp%/*}/root.squashfs" | ||
| - Name: "overwrite-sledgehammer-init" | ||
| Path: /tmp/sl1/init | ||
| Contents: | | ||
| #!/bin/ash | ||
| fail() { | ||
| printf '%s\n' "$@" | ||
| echo "Dropping into shell for debugging" | ||
| echo "Contact #community on rackn.slack.com channel for debugging" | ||
| echo "Exiting the shell will reboot the system" | ||
| /bin/ash -i | ||
| reboot | ||
| } | ||
| export PATH=/bin | ||
| ARCH={{.Machine.Arch}} | ||
| export SIGNATURE="::SIGNATURE::" | ||
| echo "Stage1 $SIGNATURE in Busybox" | ||
| echo "You can download a copy of the Busybox source for this version at:" | ||
| echo "http://rackn-sledgehammer.s3-website-us-west-2.amazonaws.com/busybox-1.29.3.tar.bz2" | ||
| mount -t proc proc /proc | ||
| mount -t sysfs sysfs /sys | ||
| mount -t devtmpfs dev /dev | ||
| mount -t tmpfs root /newinitramfs | ||
| mkdir /dev/pts | ||
| mount -t devpts devpts /dev/pts | ||
| echo "Parsing kernel parameters required for booting" | ||
| bootif=$(grep -o 'BOOTIF=[^ ]*' /proc/cmdline) | ||
| bootif=${bootif#*01-} | ||
| bootif=${bootif//-/:} | ||
| nextone=$(grep -o 'provisioner.web=[^ ]*' /proc/cmdline) | ||
| test -z "$bootif" && fail "Missing required parameter BOOTIF" | ||
| test -z "$nextone" && fail "Missing required parameter provisioner.web" | ||
| ip6=$(echo $nextone | grep -o '\[[0-9a-fA-F:]*\]') | ||
| pxedev="" | ||
| echo "Extracting drivers and other kernel modules" | ||
| xz -d -c -f lib.cpio.xz |cpio -id | ||
| test -d "lib/modules/$(uname -r)" || fail "Stage1 kernel modules do not match running kernel $(uname -r)" "We will fail to find network devices" "Make sure Sledgehammer $SIGNATURE was downloaded properly." | ||
| rm lib.cpio.xz | ||
| modprobe loop | ||
| modprobe squashfs | ||
| mv /root.squashfs /newinitramfs | ||
| echo "Switching to second-stage initramfs" | ||
| mkdir /newinitramfs/.upper /newinitramfs/.work /newinitramfs/.lower | ||
| mount -o ro -t squashfs "/newinitramfs/root.squashfs" /newinitramfs/.lower || \ | ||
| fail "Failed to mount root.squashfs as Stage2 initramfs" | ||
| test -d "/newinitramfs/.lower/usr/lib/modules/$(uname -r)" || \ | ||
| fail "Stage2 kernel modules do not match running kernel!" | ||
| # This is such a hack | ||
| (cd "/newinitramfs/.lower/usr/lib/modules/$(uname -r)/kernel/fs/overlayfs"; insmod overlay.ko*) || \ | ||
| fail "Failed to load overlayfs kernel module" | ||
| mount -t overlay -olowerdir=/newinitramfs/.lower,upperdir=/newinitramfs/.upper,workdir=/newinitramfs/.work newroot /newinitramfs || \ | ||
| fail "Failed to overlay a writeable filesystem over root.squashfs" | ||
| # Remove /etc/machine-id | ||
| rm -f /newinitramfs/etc/machine-id || : | ||
| for fs in /dev /dev/pts /proc /sys; do | ||
| mkdir -p "/newinitramfs$fs" | ||
| mount --bind "$fs" "/newinitramfs$fs" | ||
| done | ||
| mkdir -p /newinitramfs/etc/systemd/network | ||
| { | ||
| echo '[Match]' | ||
| printf 'MACAddress=%s\n\n' "$bootif" | ||
| echo '[Network]' | ||
| if [[ "$ip6" == "" ]] ; then | ||
| echo 'DHCP=ipv4' | ||
| echo | ||
| echo '[DHCP]' | ||
| echo 'ClientIdentifier=mac' | ||
| else | ||
| echo 'DHCP=ipv6' | ||
| echo | ||
| echo '[DHCP]' | ||
| echo 'ClientIdentifier=mac' | ||
| fi | ||
| } > /newinitramfs/etc/systemd/network/20-bootif.network | ||
| echo "$SIGNATURE" > /newinitramfs/etc/sledgehammer-id | ||
| echo "SLEDGEHAMMER_VERSION=${SIGNATURE}" > /newinitramfs/etc/sledgehammer-release | ||
| echo "SLEDGEHAMMER_DATE=\"::BUILD_DATE::\"" >> /newinitramfs/etc/sledgehammer-release | ||
| echo "SLEDGEHAMMER_BUILDER_VERSION=::SBV::" >> /newinitramfs/etc/sledgehammer-release | ||
| SLEDGE_ID=$(cat /newinitramfs/etc/sledgehammer-id) | ||
| for file in "/newinitramfs/etc/issue" "/newinitramfs/etc/issue.net"; do | ||
| echo " | ||
| | +--+ | Digital Rebar Sledgehammer onna Disk | ||
| | +==========={ } | ID $SLEDGE_ID | ||
| | +--+ | Kernel \r on an \m | ||
| " > $file | ||
| done | ||
| exec switch_root /newinitramfs /sbin/init | ||
| fail "Failed to switch to stage2 initramfs" "This should never happen" | ||
| - Name: repackage-sledgehammer-initramfs | ||
| Contents: | | ||
| #!/bin/bash | ||
| cd /tmp/sl1 | ||
| chmod 755 init | ||
| find . |cpio -H newc -o |gzip -9 >/boot/initrd.img | ||
| - Name: grub-config-file | ||
| Path: /boot/grub2/grub.cfg | ||
| Contents: | | ||
| linux /vmlinuz0 {{.Env.BootParams}} sledgehammer.onnadisk=true BOOTIF={{.Param "last-boot-macaddr"}} | ||
| initrd /initrd.img | ||
| boot | ||
| - Name: systemd-loader-config-entry | ||
| Path: /boot/loader/entries/sledgehammer.conf | ||
| Contents: | | ||
| title Sledgehammer on a Disk | ||
| linux /vmlinuz0 | ||
| initrd /initrd.img | ||
| options {{.Env.BootParams}} sledgehammer.onnadisk=true BOOTIF={{.Param "last-boot-macaddr"}} | ||
| - Name: systemd-loader-config | ||
| Path: /boot/loader/loader.conf | ||
| Contents: | | ||
| timeout 3 | ||
| default sledgehammer | ||
| - Name: make-system-bootable | ||
| Contents: | | ||
| #!/bin/bash | ||
| . helper | ||
| drive="/dev/{{.Param "operating-system-disk"}}" | ||
| [[ -L $drive ]] && drive="$(readlink -f "$drive")" | ||
| if [[ -d /sys/firmware/efi ]]; then | ||
| bootctl --path=/boot install | ||
| else | ||
| grub2-install "$drive" | ||
| fi | ||
| umount /boot |
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