/usr/bin/cloud-localds is in cloud-image-utils 0.29-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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VERBOSITY=0
TEMP_D=""
DEF_DISK_FORMAT="raw"
DEF_FILESYSTEM="iso9660"
CR="
"
error() { echo "$@" 1>&2; }
fail() { [ $# -eq 0 ] || error "$@"; 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
can be anything supported by qemu-img or
tar, tar-seed-local, tar-seed-net
-H | --hostname H set hostname in metadata to H
-f | --filesystem F filesystem format (vfat or iso), default: iso9660
-i | --interfaces F write network interfaces file into metadata
-N | --network-config F write network config file to local datasource
-m | --dsmode M add 'dsmode' ('local' or 'net') to the metadata
default in cloud-init is 'net', meaning network is
required.
-V | --vendor-data F vendor-data file
-v | --verbose increase verbosity
Note, --dsmode, --hostname, and --interfaces are incompatible
with metadata.
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 "${@}"
}
has_cmd() {
command -v "$1" >/dev/null 2>&1
}
short_opts="hH:i:d:f:m:N:o:V:v"
long_opts="disk-format:,dsmode:,filesystem:,help,hostname:,interfaces:,"
long_opts="${long_opts}network-config:,output:,vendor-data:,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=""
vendordata=""
filesystem=""
diskformat=$DEF_DISK_FORMAT
interfaces=_unset
dsmode=""
hostname=""
ncname="network-config"
while [ $# -ne 0 ]; do
cur=${1}; next=${2};
case "$cur" in
-h|--help) Usage ; exit 0;;
-d|--disk-format) diskformat=$next; shift;;
-f|--filesystem) filesystem=$next; shift;;
-H|--hostname) hostname=$next; shift;;
-i|--interfaces) interfaces=$next; shift;;
-N|--network-config) netcfg=$next; shift;;
-m|--dsmode) dsmode=$next; shift;;
-v|--verbose) VERBOSITY=$((${VERBOSITY}+1));;
-V|--vendor-data) vendordata="$next";;
--) 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=$3
if [ -n "$metadata" ]; then
[ "$interfaces" = "_unset" -a -z "$dsmode" -a -z "$hostname" ] ||
fail "metadata is incompatible with:" \
"--interfaces, --hostname, --dsmode"
fi
case "$diskformat" in
tar|tar-seed-local|tar-seed-net)
if [ "${filesystem:-tar}" != "tar" ]; then
fail "diskformat=tar is incompatible with filesystem"
fi
filesystem="$diskformat"
;;
tar*)
fail "supported 'tar' formats are tar, tar-seed-local, tar-seed-net"
esac
if [ -z "$filesystem" ]; then
filesystem="$DEF_FILESYSTEM"
fi
if [ "$filesystem" = "iso" ]; then
filesystem="iso9660"
fi
case "$filesystem" in
tar*)
has_cmd tar ||
fail "missing 'tar'. Required for --filesystem=$filesystem";;
vfat)
has_cmd mkfs.vfat ||
fail "missing 'mkfs.vfat'. Required for --filesystem=vfat."
has_cmd mcopy ||
fail "missing 'mcopy'. Required for --filesystem=vfat."
;;
iso9660)
has_cmd genisoimage ||
fail "missing 'genisoimage'. Required for --filesystem=iso9660."
;;
*) fail "unknown filesystem $filesystem";;
esac
case "$diskformat" in
tar*|raw) :;;
*) has_cmd "qemu-img" ||
fail "missing 'qemu-img'. Required for --disk-format=$diskformat."
esac
[ "$interfaces" = "_unset" -o -r "$interfaces" ] ||
fail "$interfaces: not a readable file"
TEMP_D=$(mktemp -d "${TMPDIR:-/tmp}/${0##*/}.XXXXXX") ||
fail "failed to make tempdir"
trap cleanup EXIT
files=( "${TEMP_D}/user-data" "${TEMP_D}/meta-data" )
if [ -n "$metadata" ]; then
cp "$metadata" "$TEMP_D/meta-data" || fail "$metadata: failed to copy"
else
instance_id="iid-local01"
iface_data=""
[ "$interfaces" != "_unset" ] &&
iface_data=$(sed ':a;N;$!ba;s/\n/\\n/g' "$interfaces")
# write json formatted user-data (json is a subset of yaml)
mdata=""
for kv in "instance-id:$instance_id" "local-hostname:$hostname" \
"interfaces:${iface_data}" "dsmode:$dsmode"; do
key=${kv%%:*}
val=${kv#*:}
[ -n "$val" ] || continue
mdata="${mdata:+${mdata},${CR}}\"$key\": \"$val\""
done
printf "{\n%s\n}\n" "$mdata" > "${TEMP_D}/meta-data"
fi
if [ -n "$netcfg" ]; then
cp "$netcfg" "${TEMP_D}/$ncname" ||
fail "failed to copy network config"
files[${#files[@]}]="$TEMP_D/$ncname"
fi
if [ -n "$vendordata" ]; then
cp "$vendordata" "${TEMP_D}/vendor-data" ||
fail "failed to copy vendor data"
files[${#files[@]}]="$TEMP_D/vendor-data"
fi
files_rel=( )
for f in "${files[@]}"; do
files_rel[${#files_rel[@]}]="${f#${TEMP_D}/}"
done
if [ "$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="$TEMP_D/seed-data"
tar_opts=( --owner=root --group=root )
case "$filesystem" in
tar)
tar "${tar_opts[@]}" -C "${TEMP_D}" -cf "$img" "${files_rel[@]}" ||
fail "failed to create tarball of ${files_rel[*]}"
;;
tar-seed-local|tar-seed-net)
if [ "$filesystem" = "tar-seed-local" ]; then
path="var/lib/cloud/seed/nocloud"
else
path="var/lib/cloud/seed/nocloud-net"
fi
mkdir -p "${TEMP_D}/${path}" ||
fail "failed making path for seed files"
mv "${files[@]}" "${TEMP_D}/$path" ||
fail "failed moving files"
tar "${tar_opts[@]}" -C "${TEMP_D}" -cf "$img" "${path}" ||
fail "failed to create tarball with $path"
;;
iso9660)
genisoimage -output "$img" -volid cidata \
-joliet -rock "${files[@]}" > "$TEMP_D/err" 2>&1 ||
{ cat "$TEMP_D/err" 1>&2; fail "failed to genisoimage"; }
;;
vfat)
truncate --size 128K "$img" || fail "failed truncate image"
out=$(mkfs.vfat -n cidata "$img" 2>&1) ||
{ error "failed: mkfs.vfat -n cidata $img"; error "$out"; }
mcopy -oi "$img" "${files[@]}" :: ||
fail "failed to copy user-data, meta-data to img"
;;
esac
[ "$output" = "-" ] && output="$TEMP_D/final"
if [ "${diskformat#tar}" != "$diskformat" -o "$diskformat" = "raw" ]; then
cp "$img" "$output" ||
fail "failed to copy image to $output"
else
qemu-img convert -f raw -O "$diskformat" "$img" "$output" ||
fail "failed to convert to disk format $diskformat"
fi
[ "$output" != "$TEMP_D/final" ] || { cat "$output" && output="-"; } ||
fail "failed to write to -"
debug 1 "wrote ${output} with filesystem=$filesystem and diskformat=$diskformat"
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