#!/bin/bash # Copyright (c) 2013 The CoreOS Authors. All rights reserved. # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. set -e -o pipefail # Everything we do should be user-access only! umask 077 if grep -q "^ID=coreos$" /etc/os-release; then source /etc/os-release [[ -f /usr/share/coreos/update.conf ]] && source /usr/share/coreos/update.conf [[ -f /etc/coreos/update.conf ]] && source /etc/coreos/update.conf fi # Fall back on the current beta if os-release isn't useful : ${VERSION_ID:=current} CHANNEL_ID=${GROUP:-beta} OEM_ID= if [[ -e /etc/oem-release ]]; then # Pull in OEM information too, but prefixing variables with OEM_ eval "$(sed -e 's/^/OEM_/' /etc/oem-release)" fi USAGE="Usage: $0 [-V version] [-d /dev/device] Options: -d DEVICE Install CoreOS to the given device. -V VERSION Version to install (e.g. current) [default: ${VERSION_ID}] -C CHANNEL Release channel to use (e.g. beta) [default: ${CHANNEL_ID}] -o OEM OEM type to install (e.g. ami) [default: ${OEM_ID:-(none)}] -c CLOUD Insert a cloud-init config to be executed on boot. -t TMPDIR Temporary location with enough space to download images. -v Super verbose, for debugging. -h This ;-) This tool installs CoreOS on a block device. If you PXE booted CoreOS on a machine then use this tool to make a permanent install. 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PUBLIC KEY BLOCK----- " DEVICE="" CLOUDINIT="" while getopts "V:C:d:o:c:t:vh" OPTION do case $OPTION in V) VERSION_ID="$OPTARG" ;; C) CHANNEL_ID="$OPTARG" ;; d) DEVICE="$OPTARG" ;; o) OEM_ID="$OPTARG" ;; c) CLOUDINIT="$OPTARG" ;; t) export TMPDIR="$OPTARG" ;; v) set -x ;; h) echo "$USAGE"; exit;; *) exit 1;; esac done # Device is required, must not be a partition, must be writable if [[ -z "${DEVICE}" ]]; then echo "$0: No target block device provided, -d is required." >&2 exit 1 fi if ! [[ $(lsblk -n -d -o TYPE "${DEVICE}") =~ ^(disk|loop|lvm)$ ]]; then echo "$0: Target block device (${DEVICE}) is not a full disk." >&2 exit 1 fi if [[ ! -w "${DEVICE}" ]]; then echo "$0: Target block device (${DEVICE}) is not writable (are you root?)" >&2 exit 1 fi if [[ -n "${CLOUDINIT}" && ! -f "${CLOUDINIT}" ]]; then echo "$0: Cloud config file (${CLOUDINIT}) does not exist." >&2 exit 1 fi if [[ -n "${OEM_ID}" ]]; then IMAGE_NAME="coreos_production_${OEM_ID}_image.bin.bz2" else IMAGE_NAME="coreos_production_image.bin.bz2" fi # for compatibility with old versions that didn't support channels if [[ "${VERSION_ID}" =~ ^(alpha|beta|stable)$ ]]; then CHANNEL_ID="${VERSION_ID}" VERSION_ID="current" fi BASE_URL="http://${CHANNEL_ID}.release.core-os.net/amd64-usr/${VERSION_ID}" IMAGE_URL="${BASE_URL}/${IMAGE_NAME}" SIG_NAME="${IMAGE_NAME}.sig" SIG_URL="${BASE_URL}/${SIG_NAME}" if ! wget --spider --quiet "${IMAGE_URL}"; then echo "$0: Image URL unavailable: $IMAGE_URL" >&2 exit 1 fi if ! wget --spider --quiet "${SIG_URL}"; then echo "$0: Image signature unavailable: $SIG_URL" >&2 exit 1 fi # Pre-flight checks pass, lets get this party started! WORKDIR=$(mktemp --tmpdir -d coreos-install.XXXXXXXXXX) trap "rm -rf '${WORKDIR}'" EXIT # Setup GnuPG for verifying the image signature export GNUPGHOME="${WORKDIR}/gnupg" mkdir "${GNUPGHOME}" gpg --batch --quiet --import <<<"$GPG_KEY" echo "Downloading the signature for ${IMAGE_URL}..." wget --no-verbose -O "${WORKDIR}/${SIG_NAME}" "${SIG_URL}" echo "Downloading, writing and verifying ${IMAGE_NAME}..." declare -a EEND if ! wget --no-verbose -O - "${IMAGE_URL}" \ | tee >(bunzip2 --stdout >"${DEVICE}") \ | gpg --batch --trusted-key "${GPG_LONG_ID}" \ --verify "${WORKDIR}/${SIG_NAME}" - then EEND=(${PIPESTATUS[@]}) [ ${EEND[0]} -ne 0 ] && echo "${EEND[0]}: Download of ${IMAGE_NAME} did not complete" >&2 [ ${EEND[1]} -ne 0 ] && echo "${EEND[1]}: Cannot expand ${IMAGE_NAME} to ${DEVICE}" >&2 [ ${EEND[2]} -ne 0 ] && echo "${EEND[2]}: GPG signature verification failed for ${IMAGE_NAME}" >&2 wipefs --all --backup "${DEVICE}" exit 1 fi # inform the OS of partition table changes blockdev --rereadpt "${DEVICE}" if [[ -n "${CLOUDINIT}" ]]; then # The ROOT partition should be #9 but make no assumptions here! # Also don't mount by label directly in case other devices conflict. ROOT_DEV=$(blkid -t "LABEL=ROOT" -o device "${DEVICE}"*) if [[ -z "${ROOT_DEV}" ]]; then echo "Unable to find new ROOT partition on ${DEVICE}" >&2 exit 1 fi echo "Installing cloud-config..." mkdir -p "${WORKDIR}/rootfs" mount -t btrfs -o subvol=root "${ROOT_DEV}" "${WORKDIR}/rootfs" trap "umount '${WORKDIR}/rootfs' && rm -rf '${WORKDIR}'" EXIT mkdir -p "${WORKDIR}/rootfs/var/lib/coreos-install" cp "${CLOUDINIT}" "${WORKDIR}/rootfs/var/lib/coreos-install/user_data" umount "${WORKDIR}/rootfs" fi rm -rf "${WORKDIR}" trap - EXIT echo "Success! CoreOS ${CHANNEL_ID} ${VERSION_ID}${OEM_ID:+ (${OEM_ID})} is installed on ${DEVICE}"