neilmayhew/update-oem-vmware.sh

## update-oem-vmware.sh
#!/usr/bin/env bash

# Update a Flatcar installation on VMWare to use the latest OEM content
#
# Copyright 2020, Neil Mayhew <neil@kerith.ca>
# LICENSE: MIT

set -ex
shopt -s extglob nullglob

OEMCONTENT=oem-vmware.tgz
KEEPCONTENT=

if [ -n "$1" ]
then
  OEMCONTENT=$1
  KEEPCONTENT=yes
fi

# Cache sudo credentials
sudo true

if [ ! -f "$OEMCONTENT" ]
then
  # Fetch the release-signing public key
  KEYID=F88CFEDEFF29A5B4D9523864E25D9AED0593B34A
  KEYSERVER=keyserver.ubuntu.com
  gpg --keyserver $KEYSERVER --recv-key $KEYID

  # Download the current stable VMWare Flatcar release
  IMGNAME=flatcar_production_vmware_raw_image.bin
  wget -N https://stable.release.flatcar-linux.net/amd64-usr/current/${IMGNAME}.bz2{,.sig}
  gpg --verify ${IMGNAME}.bz2{.sig,}
  bunzip2 -k ${IMGNAME}.bz2

  # Mount the OEM image partition via loopback
  MNT=$(mktemp -d) && trap 'rmdir "$MNT"' 0
  LOOPDEV=$(sudo losetup -f --show -P ${IMGNAME})
  sudo mount -r "${LOOPDEV}p6" "$MNT"

  # Save the content
  tar -cvzf "$OEMCONTENT" --exclude=lost+found -C "$MNT" .

  # Unmount the OEM image partition
  sudo umount "$MNT"
  sudo losetup -d "${LOOPDEV}"

  # Remove the downloaded image files
  rm -f ${IMGNAME}{,.bz2{.sig,}}
fi

# Stop existing services and remove them
if [ -d /usr/share/oem/units/ ]
then
  cd /usr/share/oem/units/
  UNITS=(*)
  cd "$OLDPWD"
  sudo systemctl stop -- "${UNITS[@]}" || true
  cd /etc/systemd/system/
  sudo rm -f "${UNITS[@]}"
  cd "$OLDPWD"
  sudo systemctl daemon-reload
fi

# Remove the exiting content
sudo rm -rf /usr/share/oem/!(lost+found)

# Install the new content
sudo tar -xf "$OEMCONTENT" -C /usr/share/oem
[ -n "$KEEPCONTENT" ] || rm -f "$OEMCONTENT"

# Install new services and start them
if [ -d /usr/share/oem/units/ ]
then
  cd /usr/share/oem/units/
  UNITS=(*)
  [ "${#UNITS[@]}" -gt 0 ] &&
    sudo cp -p -- "${UNITS[@]}" /etc/systemd/system/
  cd "$OLDPWD"
  sudo systemctl daemon-reload
  sudo systemctl start -- "${UNITS[@]}"
fi

# Inform the user
set +x
echo "New OEM content was installed and services were restarted"
	#!/usr/bin/env bash

	# Update a Flatcar installation on VMWare to use the latest OEM content
	#
	# Copyright 2020, Neil Mayhew <neil@kerith.ca>
	# LICENSE: MIT

	set -ex
	shopt -s extglob nullglob

	OEMCONTENT=oem-vmware.tgz
	KEEPCONTENT=

	if [ -n "$1" ]
	then
	OEMCONTENT=$1
	KEEPCONTENT=yes
	fi

	# Cache sudo credentials
	sudo true

	if [ ! -f "$OEMCONTENT" ]
	then
	# Fetch the release-signing public key
	KEYID=F88CFEDEFF29A5B4D9523864E25D9AED0593B34A
	KEYSERVER=keyserver.ubuntu.com
	gpg --keyserver $KEYSERVER --recv-key $KEYID

	# Download the current stable VMWare Flatcar release
	IMGNAME=flatcar_production_vmware_raw_image.bin
	wget -N https://stable.release.flatcar-linux.net/amd64-usr/current/${IMGNAME}.bz2{,.sig}
	gpg --verify ${IMGNAME}.bz2{.sig,}
	bunzip2 -k ${IMGNAME}.bz2

	# Mount the OEM image partition via loopback
	MNT=$(mktemp -d) && trap 'rmdir "$MNT"' 0
	LOOPDEV=$(sudo losetup -f --show -P ${IMGNAME})
	sudo mount -r "${LOOPDEV}p6" "$MNT"

	# Save the content
	tar -cvzf "$OEMCONTENT" --exclude=lost+found -C "$MNT" .

	# Unmount the OEM image partition
	sudo umount "$MNT"
	sudo losetup -d "${LOOPDEV}"

	# Remove the downloaded image files
	rm -f ${IMGNAME}{,.bz2{.sig,}}
	fi

	# Stop existing services and remove them
	if [ -d /usr/share/oem/units/ ]
	then
	cd /usr/share/oem/units/
	UNITS=(*)
	cd "$OLDPWD"
	sudo systemctl stop -- "${UNITS[@]}" \|\| true
	cd /etc/systemd/system/
	sudo rm -f "${UNITS[@]}"
	cd "$OLDPWD"
	sudo systemctl daemon-reload
	fi

	# Remove the exiting content
	sudo rm -rf /usr/share/oem/!(lost+found)

	# Install the new content
	sudo tar -xf "$OEMCONTENT" -C /usr/share/oem
	[ -n "$KEEPCONTENT" ] \|\| rm -f "$OEMCONTENT"

	# Install new services and start them
	if [ -d /usr/share/oem/units/ ]
	then
	cd /usr/share/oem/units/
	UNITS=(*)
	[ "${#UNITS[@]}" -gt 0 ] &&
	sudo cp -p -- "${UNITS[@]}" /etc/systemd/system/
	cd "$OLDPWD"
	sudo systemctl daemon-reload
	sudo systemctl start -- "${UNITS[@]}"
	fi

	# Inform the user
	set +x
	echo "New OEM content was installed and services were restarted"