205 lines
9.1 KiB
Bash
205 lines
9.1 KiB
Bash
#!/usr/bin/env bash
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#######################################################################################################################
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##
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## Script to full update the system
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##
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## 0. Pre checks
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## 1. Generate new boot environment (BE)
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## 2. Update and Salt highstate
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## 3. Clean up
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##
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#######################################################################################################################
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#######################################################################################################################
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## Definitions
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#######################################################################################################################
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readonly TEMPDIR=$(mktemp -d /tmp/systemupdate.XXXXXX)
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readonly LOCK_FILE="${TEMPDIR}/systemupdate.lock"
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readonly TIMESTAMP=$(date +"%Y-%m-%d_%H-%M-%S")
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readonly BTRFS_ROOT="/btrfs"
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readonly CURRENT_SUBVOLUME=$(LC_ALL=C btrfs sub show / | LC_ALL=C grep 'Name' | cut -d: -f2 | awk '{$1=$1};1')
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readonly NEW_SUBVOLUME="@root_${TIMESTAMP}"
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readonly MOUNTPOINT='/mnt'
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readonly EFI_DISK=$(findmnt -T /efi -o SOURCE | tail -n 1)
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readonly ROOT_DISK=$(findmnt / -o SOURCE | cut -d"[" -f1 | tail -n 1)
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readonly BE_HISTORY_COUNT=5
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#######################################################################################################################
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## Errorhandling
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#######################################################################################################################
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#----------------------------------------------------------------------------------------------------------------------
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# systemupdate failed
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#----------------------------------------------------------------------------------------------------------------------
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systemupdateFailed() {
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echo ""
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echo "┌──────────────────────────────────────────┐"
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echo "│ FAILED => clean up │"
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echo "└──────────────────────────────────────────┘"
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subtaskTitle "Unmount BE if mounted"
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unmountMountpoint
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subtaskTitle "Remove BE"
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removeBEFromTimestamp ${TIMESTAMP}
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rm -f ${LOCK_FILE}
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subtaskTitle "Finished with exit code 1"
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exit 1
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}
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# catch ^C and other signals and clean up
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trap "echo -e '\n=> Interrupted with CTRL+C' >&2; systemupdateFailed" SIGINT SIGHUP SIGTERM SIGABRT
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#######################################################################################################################
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## Helper Functions
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#######################################################################################################################
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#----------------------------------------------------------------------------------------------------------------------
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# Subtask title output
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#----------------------------------------------------------------------------------------------------------------------
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subtaskTitle() {
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echo -e "\n=> $1"
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}
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#----------------------------------------------------------------------------------------------------------------------
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# Unmount ${MOUNTPOINT}
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#----------------------------------------------------------------------------------------------------------------------
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unmountMountpoint() {
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# if mountpoint exists -> umount
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[[ $(findmnt -M "${MOUNTPOINT}") ]] && umount -R "${MOUNTPOINT}"
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}
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#----------------------------------------------------------------------------------------------------------------------
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# Recursive subvolume delete
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#----------------------------------------------------------------------------------------------------------------------
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btrfsSubDelRecursive() {
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btrfs sub list -o "${BTRFS_ROOT}/${1}" | cut -d " " -f 9 | while read i; do
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btrfsSubDelRecursive "$i"
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done
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btrfs sub del "${BTRFS_ROOT}/${1}"
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}
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#----------------------------------------------------------------------------------------------------------------------
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# Remove BE from timestamp
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#----------------------------------------------------------------------------------------------------------------------
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removeBEFromTimestamp() {
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# remove all subvolume with this timestamp
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for f in $(btrfs sub list -o /btrfs | cut -d " " -f 9 | grep "@root"); do
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if [[ "$f" =~ "$1" ]]; then
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btrfsSubDelRecursive "$f"
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fi
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done
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}
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#######################################################################################################################
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## Main
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#######################################################################################################################
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echo "┌──────────────────────────────────────────┐"
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echo "│ 0. Pre checks │"
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echo "└──────────────────────────────────────────┘"
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subtaskTitle "Check if another systemupgrade is in progress"
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if [ -f ${LOCK_FILE} ]; then
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echo "[ERROR] Another systemupgrade is in progress (lockfile: ${LOCK_FILE}) => exit" >&2
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exit 1
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fi
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subtaskTitle "Check if ${MOUNTPOINT} exists"
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if [ ! -d ${MOUNTPOINT} ]; then
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mkdir -p "${MOUNTPOINT}"
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fi
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subtaskTitle "Check if ${MOUNTPOINT} is already a mountpoint"
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if [[ $(findmnt -M "${MOUNTPOINT}") ]]; then
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echo "[ERROR] ${MOUNTPOINT} is already a mountpoint => exit" >&2
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exit 1
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fi
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subtaskTitle "Checks finished and update can start"
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# Create lock file
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touch ${LOCK_FILE} || systemupdateFailed
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echo ""
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echo "┌──────────────────────────────────────────┐"
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echo "│ 1. Generate new boot environment (BE) │"
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echo "└──────────────────────────────────────────┘"
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subtaskTitle "Create snapshot of current running system"
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btrfs subvolume snapshot / ${BTRFS_ROOT}/${NEW_SUBVOLUME} || systemupdateFailed
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subtaskTitle "Mount new BE to ${MOUNTPOINT}"
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mount -o noatime,nodiratime,discard=async,space_cache=v2,subvol="${NEW_SUBVOLUME}" "${ROOT_DISK}" "${MOUNTPOINT}" || systemupdateFailed
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mount -o noatime,nodiratime,discard=async,space_cache=v2,subvol=@home "${ROOT_DISK}" "${MOUNTPOINT}/home" || systemupdateFailed
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mount -o noatime,nodiratime,discard=async,space_cache=v2,subvol=@podman "${ROOT_DISK}" "${MOUNTPOINT}/opt/podman" || systemupdateFailed
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mount -o noatime,nodiratime,discard=async,space_cache=v2,subvol=@mysql "${ROOT_DISK}" "${MOUNTPOINT}/var/lib/mysql" || systemupdateFailed
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mount -o noatime,nodiratime,discard=async,space_cache=v2,subvol=/ "${ROOT_DISK}" "${MOUNTPOINT}/btrfs" || systemupdateFailed
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mount -o nodev,nosuid,noexec "${EFI_DISK}" "${MOUNTPOINT}/efi" || systemupdateFailed
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mount -t proc /proc "${MOUNTPOINT}/proc/" || systemupdateFailed
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mount -t sysfs /sys "${MOUNTPOINT}/sys/" || systemupdateFailed
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mount -o bind /sys/firmware/efi/efivars "${MOUNTPOINT}/sys/firmware/efi/efivars/" || systemupdateFailed
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mount -o bind /dev "${MOUNTPOINT}/dev/" || systemupdateFailed
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mount -o bind /run "${MOUNTPOINT}/run/" || systemupdateFailed
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subtaskTitle "New BE mounted"
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echo ""
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echo "┌──────────────────────────────────────────┐"
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echo "│ 2. Update and Salt highstate │"
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echo "└──────────────────────────────────────────┘"
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subtaskTitle "Update Saltstack"
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chroot "${MOUNTPOINT}" /bin/bash -c "git -C /srv/salt pull" || systemupdateFailed
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chroot "${MOUNTPOINT}" /bin/bash -c "git -C /srv/pillar pull" || systemupdateFailed
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subtaskTitle "Update bootloader configs"
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chroot "${MOUNTPOINT}" /bin/bash -c "salt-call state.sls system.bootloader" >/dev/null || systemupdateFailed
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subtaskTitle "Alpine repositories & keyring update"
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chroot "${MOUNTPOINT}" /bin/bash -c "apk update" || systemupdateFailed
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subtaskTitle "Alpine packages update"
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chroot "${MOUNTPOINT}" /bin/bash -c "apk upgrade" || systemupdateFailed
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subtaskTitle "Salt highstate"
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chroot "${MOUNTPOINT}" /bin/bash -c "salt-call state.highstate" >/dev/null || systemupdateFailed
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subtaskTitle "Generate new initial ramdisk"
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chroot "${MOUNTPOINT}" /bin/bash -c "mkinitfs $(uname -r)" || systemupdateFailed
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subtaskTitle "Update motd"
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chroot "${MOUNTPOINT}" /bin/bash -c "/usr/local/noveria/bin/generate_motd" || systemupdateFailed
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subtaskTitle "Update GRUB"
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chroot "${MOUNTPOINT}" /bin/bash -c "grub-install --target=x86_64-efi --efi-directory=/efi --bootloader-id=alpine" || systemupdateFailed
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chroot "${MOUNTPOINT}" /bin/bash -c "/usr/local/noveria/bin/noveriablcgen --noconfirm" || systemupdateFailed
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subtaskTitle "Update finished"
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subtaskTitle "Unmount BE"
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unmountMountpoint
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echo ""
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echo "┌──────────────────────────────────────────┐"
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echo "│ 3. Clean Up │"
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echo "└──────────────────────────────────────────┘"
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subtaskTitle "Clean up finished"
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# Remove lock file
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rm -f ${LOCK_FILE}
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