Explode overlay tar

This commit is contained in:
Madis Mägi 2021-02-23 00:32:51 +02:00
parent 2a48e50ade
commit 9327fe6000
10 changed files with 690 additions and 1 deletions

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@ -10,6 +10,6 @@ fi
curl -JLO https://github.com/buildroot/buildroot/archive/2020.02.10.tar.gz curl -JLO https://github.com/buildroot/buildroot/archive/2020.02.10.tar.gz
tar xf buildroot-2020.02.10.tar.gz tar xf buildroot-2020.02.10.tar.gz
mkdir buildroot-2020.02.10/butterknife/ mkdir buildroot-2020.02.10/butterknife/
tar xf overlay.tar -C buildroot-2020.02.10/butterknife/ cp -r overlay/ buildroot-2020.02.10/butterknife/
mkdir bin/ mkdir bin/

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13
overlay/etc/motd Normal file
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https://github.com/laurivosandi/butterknife

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#!/bin/sh
set -e
action=$(dialog --menu "Advanced options, consider your warranty VOID!" 0 0 0 \
shell "Drop to shell" \
instance "Instance maintenance and recovery" \
subvol "Delete instances/templates" \
restore "Restore Windows master boot record" \
2>&1 >$(tty))
clear
case $action in
shell)
sh
;;
instance)
export BUTTERKNIFE_PARTITION=$(butterknife-select-btrfs-filesystem 2>&1 >$(tty))
# Probe instances
pool_mountpoint=$(mktemp -d)
subvols=$(mktemp)
mount $BUTTERKNIFE_PARTITION $pool_mountpoint -o subvol=/
for subvol in $(ls $pool_mountpoint | grep "^@root:" | sort -r); do
echo "$subvol \"\""
done > $subvols
if [ -d $pool_mountpoint/deployments ]; then
for timestamp in $(ls $pool_mountpoint/deployments | sort -r); do
echo "deployments/$timestamp \"\""
done >> $subvols
fi
umount $pool_mountpoint
rmdir $pool_mountpoint
# Select instance
export BUTTERKNIFE_DEPLOY_SUBVOL=$(dialog \
--menu "Select instance" 0 0 0 \
--file $subvols 2>&1 >$(tty))
# TODO: Export BUTTERKNIFE_DISK for grub-install MBR
instance_mountpoint=$(mktemp -d)
mount $BUTTERKNIFE_PARTITION -o subvol=$BUTTERKNIFE_DEPLOY_SUBVOL $instance_mountpoint
mount --bind /dev $instance_mountpoint/dev
mount --bind /sys $instance_mountpoint/sys
mount --bind /proc $instance_mountpoint/proc
if [ -d $instance_mountpoint/var/lib/butterknife/persistent ]; then
mount --bind /proc $instance_mountpoint/var/lib/butterknife/persistent
fi
clear
echo "Mounted $BUTTERKNIFE_PARTITION$BUTTERKNIFE_DEPLOY_SUBVOL at $instance_mountpoint"
echo "Chrooting into $instance_mountpoint"
hostname $(cat $instance_mountpoint/etc/hostname)
cat /etc/resolv.conf > $instance_mountpoint/etc/resolv.conf
# Export sensible PATH
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
chroot $instance_mountpoint butterknife-maintenance
umount -a
rmdir $instance_mountpoint
;;
subvol)
BUTTERKNIFE_PARTITION=$(butterknife-select-btrfs-filesystem 2>&1 >$(tty))
mountpoint=$(mktemp -d)
mount $BUTTERKNIFE_PARTITION -o subvol=/ $mountpoint
subvols=$(mktemp)
for subvol in $(btrfs subvol list $mountpoint | cut -d ' ' -f 9 | sort -r); do
echo "$subvol \"\""
done > $subvols
selected_subvol=$(dialog --menu "Select subvolume to delete on $BUTTERKNIFE_PARTITION" 0 0 0 \
--file $subvols 2>&1 >$(tty))
rm -f $subvols
btrfs subvol delete -c $mountpoint/$selected_subvol
umount $mountpoint
rmdir $mountpoint
;;
restore)
disk=$(butterknife-select-disk 2>&1 >$(tty))
# Select MBR type
action=$(dialog --menu "What kind of master boot record would you like to restore? You might have to mark partition bootable using fdisk." 0 0 0 \
mbr7 "Windows 7/8/10" \
mbrvista "Windows Vista" \
mbr "Windows 2000/XP/2003" \
2>&1 >$(tty))
cmd="ms-sys --$action /dev/$disk"
$cmd | dialog --programbox "$cmd" 10 76
;;
esac

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dig -t ANY @224.0.0.251 -p5353 +noall +answer _butterknife._tcp.local | grep "IN SRV" | while read line; do
hostname=$(echo $line | cut -d " " -f 8)
address=$(dig +short +noall +answer @224.0.0.251 -p5353 $hostname | head -n1)
port=$(echo $line | cut -d " " -f 7)
title=$(echo $line | cut -d "." -f 1 | sed -e 's/\032/ /g')
if [ $port -eq 80 ]; then
echo "http://$address \"$title\""
else
echo "http://$address:$port \"$title\""
fi
done

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#!/bin/sh
partition_slug=$(echo $1 | cut -d "/" -f 3)
sys_part="/sys/block/*/$partition_slug"
sys_disk=$(dirname $sys_part)
sector_count=$(cat $sys_part/size)
sector_size=$(cat $sys_disk/queue/hw_sector_size)
size=$(expr $sector_count / 1000000 \* $sector_size / 1000)G
if [ $size == "G" ]; then
size=$(expr $sector_count / 1000 \* $sector_size / 1000)M
fi
echo $size

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#!/bin/sh
# TODO: Make sure fdisk from busybox is NOT used, it's counting sectors incorrectly (?!)
# TODO: Check connectivity with API server
BUTTERKNIFE_POOL_MOUNTPOINT=/var/lib/butterknife/pool
TARGET_MOUNTPOINT=/mnt/target
AGENT="Butterknife-Provisioning-Image/0.2"
URL_LOCAL=http://butterknife
#######################################
### Check for presence of utilities ###
#######################################
for util in btrfs jq fdisk find ntfsresize udp-sender udp-receiver ntpdate curl ms-sys mktemp test true sort uniq dig; do
if [ -z "$(which $util)" ]; then
echo "Butterknife was unable to locate $util," \
"are you sure the provisioning image was compiled properly?"
exit 253
else
echo "Found $util..."
fi
done
#for i in $(cat /proc/cmdline); do
# case i in
# bk_debug)
set -x # Echo
# ;;
# esac
#done
set -e # Bail on error
#######################################
### Transfer method selection phase ###
#######################################
if [ -z $BUTTERKNIFE_TRANSFER_METHOD ]; then
BUTTERKNIFE_TRANSFER_METHOD=$(dialog --menu "Select transfer method" 0 0 0 \
http "HTTP-only" \
multicast "Multicast receive" \
tee "Multicast via HTTP and write" \
proxy "Only proxy HTTP to multicast" 2>&1 >$(tty))
clear
fi
##################################
### Harddisk preparation phase ###
##################################
case $BUTTERKNIFE_TRANSFER_METHOD in
http|multicast|tee)
#############################
### Target disk selection ###
#############################
if [ -z $bk_disk_slug ]; then
bk_disk_slug=$(butterknife-select-disk 2>&1 >$(tty))
fi
BUTTERKNIFE_DISK=/dev/$bk_disk_slug
if [ -z $BUTTERKNIFE_PARTITIONING_METHOD ]; then
BUTTERKNIFE_PARTITIONING_METHOD=$(dialog --menu "Partitioning $BUTTERKNIFE_DISK" 0 0 0 \
receive "Receive into existing btrfs filesystem" \
unpartitioned "Use unpartitioned area" \
resize "Resize last partition" \
reformat "Reformat partition" \
mbr "Wipe <2TB disk" \
gpt "Wipe 2TB+ disk" \
efi "Wipe and do EFI install" \
2>&1 >$(tty))
clear
fi
# TODO: deploy "Deploy received template" \
# TODO: postinstall "Run postinstall scripts (reinstall GRUB)" \
case $BUTTERKNIFE_PARTITIONING_METHOD in
unpartitioned)
echo "Attempting to create new partition in unpartitioned space"
echo -e "n\np\n\n\n\nw" | fdisk $BUTTERKNIFE_DISK
;;
resize)
NTFS_PARTITION=$(ls $BUTTERKNIFE_DISK? | tail -n 1)
# TODO: Assert last one is NTFS
# TODO: Suggested size heuristics
MINSIZE=$(ntfsresize $NTFS_PARTITION -m | grep Minsize | cut -d ':' -f 2)
SUGGESTED=${MINSIZE}M
SIZE=$(dialog --inputbox "Enter new filesystem size of at least ${MINSIZE}M" 0 0 $SUGGESTED 2>&1 >$(tty))
clear
ntfsresize -s $SIZE $NTFS_PARTITION
echo -e "d\n\nw" | fdisk $BUTTERKNIFE_DISK # Remove last partition
echo -e "n\np\n\n\n+$SIZE\nt\n\n7\nw" | fdisk $BUTTERKNIFE_DISK # Re-create NTFS
echo -e "n\np\n\n\n\nw" | fdisk $BUTTERKNIFE_DISK # Create partition for btrfs
;;
mbr)
echo "Purging whole disk"
echo -e "o\nn\np\n\n\n\na\n1\nw" | fdisk $BUTTERKNIFE_DISK
;;
gpt)
sgdisk $BUTTERKNIFE_DISK -o -g \
-n 1::+2MB -t 1:ef02 -c 1:"BIOS Boot Partition" \
-n 2 -t 2:8300 -c 2:"Butterknife pool" -p
;;
efi)
sgdisk $BUTTERKNIFE_DISK -o -g \
-n 1::+100MB -t 1:ef00 -c 1:"EFI System Partition" \
-n 2 -t 2:8300 -c 2:"Butterknife pool" -p
;;
reformat|receive)
# NOOP
;;
*)
echo "Invalid partitioning method $BUTTERKNIFE_PARTITIONING_METHOD"
exit 255
;;
esac
############################################
### Target partition determination phase ###
############################################
case $BUTTERKNIFE_PARTITIONING_METHOD in
reformat|receive)
# Dialog to select partition for reformat or receive
for partition in $BUTTERKNIFE_DISK?; do
partition_slug=$(echo $BUTTERKNIFE_PARTITION | cut -d "/" -f 3)
sector_count=$(cat /sys/block/$bk_disk_slug/$BUTTERKNIFE_PARTITION_slug/size)
sector_size=$(cat /sys/block/$bk_disk_slug/queue/hw_sector_size)
size=$(expr $sector_count / 1000000 \* $sector_size / 1000 || true)G
if [ $size == "0G" ]; then
size=$(expr $sector_count / 1000 \* $sector_size / 1000 || true)M
fi
echo "$BUTTERKNIFE_PARTITION \"$size\"";
done > /tmp/partitions
BUTTERKNIFE_PARTITION=$(dialog \
--menu "Target partition" 0 0 0 \
--file /tmp/partitions \
2>&1 >$(tty))
clear
;;
unpartitioned|resize|mbr|gpt|efi)
# Assume last partition
BUTTERKNIFE_PARTITION=$(ls $BUTTERKNIFE_DISK? | tail -n 1)
;;
*)
echo "Invalid partitioning method $BUTTERKNIFE_PARTITIONING_METHOD"
exit 255
;;
esac
PARTITION_SLUG=$(echo $BUTTERKNIFE_PARTITION | cut -d "/" -f 3)
########################################
### Target filesystem creation phase ###
########################################
case $BUTTERKNIFE_PARTITIONING_METHOD in
efi)
mkfs.vfat ${BUTTERKNIFE_DISK}1
;;
esac
case $BUTTERKNIFE_PARTITIONING_METHOD in
mbr|gpt|efi|reformat|unpartitioned|resize)
echo "Creating clean btrfs filesystem on $PARTITON"
mkfs.btrfs -f $BUTTERKNIFE_PARTITION
;;
esac
# Attempt to mount target directory
mkdir -p $BUTTERKNIFE_POOL_MOUNTPOINT
mount $BUTTERKNIFE_PARTITION $BUTTERKNIFE_POOL_MOUNTPOINT -o subvol=/ -t btrfs
if [ $? -ne 0 ]; then
dialog --msgbox "Mounting $BUTTERKNIFE_PARTITION at $BUTTERKNIFE_POOL_MOUNTPOINT failed, are you sure kernel has btrfs support built-in?" 0 0
exit 255
fi
################
### Clean up ###
################
for subvol in $(ls $BUTTERKNIFE_POOL_MOUNTPOINT | (grep "^@template:" || true)); do
set +e
touch $BUTTERKNIFE_POOL_MOUNTPOINT/$subvol/.test
if [ $? -eq 0 ]; then
set -e
btrfs subvol delete $BUTTERKNIFE_POOL_MOUNTPOINT/$subvol
fi
set -e
done
;;
*)
BUTTERKNIFE_PARTITIONING_METHOD="pass"
;;
esac
##############################
### Determine architecture ###
##############################
bk_arch=$(uname -m | sed 's/^i.86$/x86/')
case $BUTTERKNIFE_TRANSFER_METHOD in
http|tee|proxy)
##############################
### Server selection phase ###
##############################
if [ -z $bk_url ]; then
bk_url=$(dialog --menu "Select server" 0 0 0 \
mdns:// "Autodiscover" \
$URL_LOCAL "Manually enter" \
https://butterknife.k-space.ee "K-SPACE MTÜ" 2>&1 >$(tty))
if [ "$bk_url" == "mdns://" ]; then
butterknife-discover > /tmp/discovered_servers
bk_url=$(dialog --menu "Select one of discovered servers" \
0 0 0 --file /tmp/discovered_servers 2>&1 >$(tty))
elif [ "$bk_url" == $URL_LOCAL ]; then
bk_url=$(dialog --inputbox "Manually enter the URL of Butterknife server" \
0 0 $URL_LOCAL 2>&1 >$(tty))
fi
clear
fi
################################
### Template selection phase ###
################################
if [ -z $bk_template ]; then
# Fetch template list
curl -A $AGENT -s $bk_url/api/template \
| jq '.templates[] | .namespace + "." + .identifier + " \"" + .description + "\""' -r \
> /tmp/available_templates
bk_template=$(dialog \
--menu "Select template to deploy" 0 0 0 \
--file /tmp/available_templates \
2>&1 >$(tty))
clear
fi
###############################
### Version selection phase ###
###############################
if [ -z $bk_version ]; then
# Fetch version list
curl -A $AGENT -s $bk_url/api/template/$bk_template/arch/$bk_arch/version \
> /tmp/available_versions.json
cat /tmp/available_versions.json \
| jq '.versions[] | .identifier + " \"" + .comment + "\""' -r \
| head -n 100 \
> /tmp/available_versions
bk_version=$(dialog \
--menu "Select version to deploy" 0 0 0 \
--file /tmp/available_versions \
2>&1 >$(tty))
clear
fi
BUTTERKNIFE_TEMPLATE_SUBVOL="@template:$bk_template:$bk_arch:$bk_version"
#####################################
### Stream URL construction phase ###
#####################################
# Build btrfs-stream URL
STREAM="$bk_url/$BUTTERKNIFE_TEMPLATE_SUBVOL"
;;
esac
##############################################
### Allow differential versions using HTTP ###
##############################################
case $BUTTERKNIFE_TRANSFER_METHOD in
http)
# Determine differential version parent
cat /tmp/available_versions.json | jq -r '.versions[] .identifier' > /tmp/available_version_names
ls $BUTTERKNIFE_POOL_MOUNTPOINT | (grep "^@template:$bk_template:$bk_arch:" || true) | cut -d ":" -f 4 > /tmp/local_version_names
PARENT=$(cat /tmp/local_version_names /tmp/available_version_names | sort | grep -v $bk_version | uniq -d | sort -t p -k 2n | tail -n 1)
if [ -z $PARENT ]; then
echo "Could not determine parent, falling back to full snapshot"
else
STREAM="$STREAM?parent=@template:$bk_template:$bk_arch:$PARENT"
fi
echo "Final URL is $STREAM"
;;
esac
####################################################
### Enable compression if we're going over HTTPS ###
####################################################
case $STREAM in
https://*)
STREAM="--compressed $STREAM"
;;
esac
######################
### Transfer phase ###
######################
case $BUTTERKNIFE_TRANSFER_METHOD in
multicast)
ls $BUTTERKNIFE_POOL_MOUNTPOINT | (grep "^@template:" || true) > /tmp/local_templates
udp-receiver --nokbd | btrfs receive $BUTTERKNIFE_POOL_MOUNTPOINT
# Heuristics to determine name of received snapshot
ls $BUTTERKNIFE_POOL_MOUNTPOINT | (grep "^@template:" || true) > /tmp/new_templates
BUTTERKNIFE_TEMPLATE_SUBVOL=$(cat /tmp/local_templates /tmp/new_templates | sort | uniq -u)
# TODO: Break here if we got garbage
bk_template=$(echo $BUTTERKNIFE_TEMPLATE_SUBVOL | cut -d ":" -f 2)
bk_arch=$(echo $BUTTERKNIFE_TEMPLATE_SUBVOL | cut -d ":" -f 3)
bk_version=$(echo $BUTTERKNIFE_TEMPLATE_SUBVOL | cut -d ":" -f 4)
;;
http)
curl -A $AGENT $STREAM | btrfs receive $BUTTERKNIFE_POOL_MOUNTPOINT
;;
tee)
dialog --msgbox "Press enter once all the other machines are ready to receive" 0 0
mkfifo /tmp/multicast_stream /tmp/local_stream
cat /tmp/local_stream | btrfs receive $BUTTERKNIFE_POOL_MOUNTPOINT &
sleep 1
udp-sender --nokbd --no-progress --min-receivers 1 --min-wait 5 /tmp/multicast_stream &
sleep 1
curl -A $AGENT -s $STREAM | tee /tmp/multicast_stream > /tmp/local_stream
sleep 2
# TODO: Ensure btrfs receive has finished
;;
proxy)
dialog --msgbox "Press enter once all the other machines are ready to receive" 0 0
curl -A $AGENT -s $STREAM \
| udp-sender --nokbd --min-receivers 1 --min-wait 5
;;
esac
sync
case $BUTTERKNIFE_PARTITIONING_METHOD in
pass)
echo "Skipping template deployment"
;;
*)
#################################
### Template deployment phase ###
#################################
BUTTERKNIFE_DEPLOY_SUBVOL="@root:$bk_template:$bk_arch:$bk_version"
btrfs subvolume snapshot \
$BUTTERKNIFE_POOL_MOUNTPOINT/$BUTTERKNIFE_TEMPLATE_SUBVOL \
$BUTTERKNIFE_POOL_MOUNTPOINT/$BUTTERKNIFE_DEPLOY_SUBVOL
# Symlink @root:active to current deployment subvol
rm -f $BUTTERKNIFE_POOL_MOUNTPOINT/@root:active
ln -s \
$BUTTERKNIFE_DEPLOY_SUBVOL \
$BUTTERKNIFE_POOL_MOUNTPOINT/@root:active
###############################
### Run post-deploy scripts ###
###############################
# Mount deployment subvolume at target directory
mkdir -p $TARGET_MOUNTPOINT
mount -o subvol=$BUTTERKNIFE_DEPLOY_SUBVOL \
$BUTTERKNIFE_PARTITION \
$TARGET_MOUNTPOINT
# Mount pool also for chroot
mkdir -p $TARGET_MOUNTPOINT$BUTTERKNIFE_POOL_MOUNTPOINT
mount -o subvol=/ \
$BUTTERKNIFE_PARTITION \
$TARGET_MOUNTPOINT$BUTTERKNIFE_POOL_MOUNTPOINT
# Mount stuff for chroot
mount --bind /dev/ $TARGET_MOUNTPOINT/dev/
mount --bind /sys/ $TARGET_MOUNTPOINT/sys/
mount --bind /proc/ $TARGET_MOUNTPOINT/proc/
mount --bind /run/ $TARGET_MOUNTPOINT/run/
mount none $TARGET_MOUNTPOINT/tmp/ -t tmpfs
case $BUTTERKNIFE_PARTITIONING_METHOD in
efi)
mount ${BUTTERKNIFE_DISK}1 $TARGET_MOUNTPOINT/boot/efi
;;
esac
# Export variables for postinstall scripts
export BUTTERKNIFE_DOMAIN
export BUTTERKNIFE_TEMPLATE_SUBVOL
export BUTTERKNIFE_DEPLOY_SUBVOL
export BUTTERKNIFE_PARTITION
export BUTTERKNIFE_DISK
export BUTTERKNIFE_POOL_MOUNTPOINT
export BUTTERKNIFE_PARTITIONING_METHOD
export BUTTERKNIFE_TRANSFER_METHOD
export BUTTERKNIFE_POOL_UUID=$(blkid -s UUID -o value $BUTTERKNIFE_PARTITION)
# Copy DNS config
mkdir -p /run/resolvconf
mkdir -p /run/systemd/resolve
cat /etc/resolv.conf > $TARGET_MOUNTPOINT/etc/resolv.conf
# Export sensible PATH
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# Run postinstall scripts, presumably in sorted order
chroot $TARGET_MOUNTPOINT butterknife-deploy
chroot $TARGET_MOUNTPOINT butterknife-maintenance
# Be forgiving from now on
set +e
# Unmount directories
echo "Unmounting filesystems"
umount -a
echo "Flushing buffers"
sync
sleep 1
echo "Rebooting machine"
reboot -f
;;
esac

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#!/bin/sh
volumes=$(mktemp)
unset partition
for partition in $(blkid -t TYPE=btrfs | cut -d ":" -f 1); do
echo "$partition \"$(butterknife-partition-size $partition)\"";
done > $volumes
if [ -z $partition ]; then
dialog --msgbox "Unable to detect any Butterknife filesystems" 0 0
return 1
else
dialog \
--menu "Select btrfs filesystem" 0 0 0 \
--file $volumes
fi
rm -f $volumes

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#!/bin/sh
if [ -z "$(ls /sys/class/block/)" ]; then
dialog --msgbox "Butterknife was unable to detect any harddisks,\
are you sure harddisk is connected and we have drivers for it?" 0 0
exit 255
fi
for disk in /sys/class/block/*; do
if [ -d $disk/device ]; then
slug=$(basename $disk)
sector_count=$(cat $disk/size)
sector_size=$(cat $disk/queue/hw_sector_size)
# Hack around these dumbass cardreaders
if [ "$sector_count" == "0" ]; then
continue
fi
size=$(expr $sector_count / 1000000 \* $sector_size / 1000 || true)G
if [ -f $disk/device/model ]; then
echo "$slug \"$(cat $disk/device/model | xargs) ($size)\"";
else
echo "$slug \"$size\"";
fi
fi
done > /tmp/disks
dialog \
--menu "Target disk" 0 0 0 \
--file /tmp/disks

70
overlay/sbin/init Executable file
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#!/bin/sh
clear
if [ -f /etc/motd ]; then
cat /etc/motd
fi
# Note that /dev should be handled by devtmpfs
# Make sure this file will be executable
mount -t proc none /proc
mount -t sysfs sysfs /sys
#################################################################
### There should be at least one network interface to proceed ###
#################################################################
echo "Discovering network interfaces..."
sleep 5
if [ -z "$(ls /sys/class/net/ | grep -v '^lo$')" ]; then
dialog --msgbox "Butterknife was unable to detect any network interfaces,\
are you sure network interface is attached properly and we have drivers for it?" 0 0
exit 254
fi
echo "Asking for IP using DHCP ..."
udhcpc
if [ -z "$bk_timeserver" ]; then
echo "No timeserver specified, skipping ntpdate"
else
echo "Adjusting time ..."
ntpdate $bk_timeserver
fi
if [ $bk_action == "provision" ]; then
butterknife-provision
sync
sleep 10
poweroff -f
fi
while [ 1 ]; do
action=$(dialog --no-cancel --menu "What do you want to do" 0 0 0 \
provision "Provision this machine" \
advanced "Advanced options" \
reboot "Reboot" \
poweroff "Shutdown" 2>&1 >$(tty))
clear
case $action in
reboot)
reboot -f
;;
poweroff)
poweroff -f
;;
provision)
butterknife-provision
read -p "Press Enter to continue..."
;;
advanced)
butterknife-advanced-options
;;
esac
done