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usr/bin/cloud-localds 0000755 00000010661 14720733476 0010621 0 ustar 00 #!/bin/bash VERBOSITY=0 TEMP_D="" DEF_DISK_FORMAT="raw" DEF_FILESYSTEM="iso9660" error() { echo "$@" 1>&2; } errorp() { printf "$@" 1>&2; } fail() { [ $# -eq 0 ] || error "$@"; exit 1; } failp() { [ $# -eq 0 ] || errorp "$@"; exit 1; } Usage() { cat <<EOF Usage: ${0##*/} [ options ] output user-data [meta-data] Create a disk for cloud-init to utilize nocloud options: -h | --help show usage -d | --disk-format D disk format to output. default: raw -f | --filesystem F filesystem format (vfat or iso), default: iso9660 -i | --interfaces F write network interfaces file into metadata -m | --dsmode M add 'dsmode' ('local' or 'net') to the metadata default in cloud-init is 'net', meaning network is required. Example: * cat my-user-data #cloud-config password: passw0rd chpasswd: { expire: False } ssh_pwauth: True * echo "instance-id: \$(uuidgen || echo i-abcdefg)" > my-meta-data * ${0##*/} my-seed.img my-user-data my-meta-data * kvm -net nic -net user,hostfwd=tcp::2222-:22 \\ -drive file=disk1.img,if=virtio -drive file=my-seed.img,if=virtio * ssh -p 2222 ubuntu@localhost EOF } bad_Usage() { Usage 1>&2; [ $# -eq 0 ] || error "$@"; exit 1; } cleanup() { [ -z "${TEMP_D}" -o ! -d "${TEMP_D}" ] || rm -Rf "${TEMP_D}" } debug() { local level=${1}; shift; [ "${level}" -gt "${VERBOSITY}" ] && return error "${@}" } short_opts="hi:d:f:m:o:v" long_opts="disk-format:,dsmode:,filesystem:,help,interfaces:,output:,verbose" getopt_out=$(getopt --name "${0##*/}" \ --options "${short_opts}" --long "${long_opts}" -- "$@") && eval set -- "${getopt_out}" || bad_Usage ## <<insert default variables here>> output="" userdata="" metadata="" filesystem=$DEF_FILESYSTEM diskformat=$DEF_DISK_FORMAT interfaces=_unset dsmode="" while [ $# -ne 0 ]; do cur=${1}; next=${2}; case "$cur" in -h|--help) Usage ; exit 0;; -v|--verbose) VERBOSITY=$((${VERBOSITY}+1));; -d|--disk-format) diskformat=$next; shift;; -f|--filesystem) filesystem=$next; shift;; -m|--dsmode) dsmode=$next; shift;; -i|--interfaces) interfaces=$next; shift;; --) shift; break;; esac shift; done ## check arguments here ## how many args do you expect? [ $# -ge 2 ] || bad_Usage "must provide output, userdata" [ $# -le 3 ] || bad_Usage "confused by additional args" output=$1 userdata=$2 metadata=$3 [ -n "$metadata" -a "${interfaces}" != "_unset" ] && fail "metadata and --interfaces are incompatible" [ -n "$metadata" -a -n "$dsmode" ] && fail "metadata and dsmode are incompatible" [ "$interfaces" = "_unset" -o -r "$interfaces" ] || fail "$interfaces: not a readable file" TEMP_D=$(mktemp -d "${TMPDIR:-/tmp}/${0##*/}.XXXXXX") || fail "failed to make tempdir" trap cleanup EXIT if [ -n "$metadata" ]; then cp "$metadata" "$TEMP_D/meta-data" || fail "$metadata: failed to copy" else iface_data="" dsmode_data="" [ "$interfaces" != "_unset" ] && iface_data=$(sed ':a;N;$!ba;s/\n/\\n/g' "$interfaces") && iface_data="\"interfaces\": '$iface_data'" [ -n "$dsmode" ] && dsmode_data="\"dsmode\": \"$dsmode\"" # write json formatted user-data (json is a subset of yaml) printf "{\n%s\n%s\n%s\n}" "\"instance-id\": \"iid-local01\"" \ "${iface_data}" "${dsmode_data}" > "${TEMP_D}/meta-data" fi if [ "$userdata" = "-" ]; then cat > "$TEMP_D/user-data" || fail "failed to read from stdin" else cp "$userdata" "$TEMP_D/user-data" || fail "$userdata: failed to copy" fi ## alternatively, create a vfat filesystem with same files img="$TEMP_D/seed.img" truncate --size 100K "$img" || fail "failed truncate image" case "$filesystem" in iso9660|iso) genisoimage -output "$img" -volid cidata \ -joliet -rock "$TEMP_D/user-data" "$TEMP_D/meta-data" \ > "$TEMP_D/err" 2>&1 || { cat "$TEMP_D/err" 1>&2; fail "failed to genisoimage"; } ;; vfat) mkfs.vfat -n cidata "$img" || fail "failed mkfs.vfat" mcopy -oi "$img" "$TEMP_D/user-data" "$TEMP_D/meta-data" :: || fail "failed to copy user-data, meta-data to img" ;; *) fail "unknown filesystem $filesystem";; esac [ "$output" = "-" ] && output="$TEMP_D/final" qemu-img convert -f raw -O "$diskformat" "$img" "$output" || fail "failed to convert to disk format $diskformat" [ "$output" != "$TEMP_D/final" ] || { cat "$output" && output="-"; } || fail "failed to write to -" error "wrote ${output} with filesystem=$filesystem and diskformat=$diskformat" # vi: ts=4 noexpandtab
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