ubuntu-cloud-prep revision d24d56d7ee3420bb79238ff84cad07c20cf4757d
79159a86ddb51071055abd7ee08935bc65b9e7a9Scott Moser## If the container being cloned has one or more lxc.hook.clone
79159a86ddb51071055abd7ee08935bc65b9e7a9Scott Moser## specified, then the specified hooks will be called for the new
79159a86ddb51071055abd7ee08935bc65b9e7a9Scott Moser## container. The arguments passed to the clone hook are:
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser## 1. the container name
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser## 2. a section ('lxc')
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser## 3. hook type ('clone')
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser## 4. .. additional arguments to lxc-clone
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser## Environment variables:
79159a86ddb51071055abd7ee08935bc65b9e7a9Scott Moser## LXC_ROOTFS_MOUNT: path to the root filesystem
79159a86ddb51071055abd7ee08935bc65b9e7a9Scott Moser## LXC_CONFIG_FILE: path to config file
79159a86ddb51071055abd7ee08935bc65b9e7a9Scott Moser## LXC_SRC_NAME: old container name
79159a86ddb51071055abd7ee08935bc65b9e7a9Scott Moser## LXC_ROOTFS_PATH: path or device on which the root fs is located
79159a86ddb51071055abd7ee08935bc65b9e7a9Scott Moserdebug() { [ "$VERBOSITY" -ge "$1" ] || return; shift; error "$@"; }
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott MoserUsage: ${0##*/} [options] root-dir
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser root-dir is the root directory to operate on
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser [ -C | --cloud ]: do not configure a datasource. incompatible with
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser options marked '[ds]'
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser [ -i | --instance-id]: instance-id for cloud-init, defaults to random [ds]
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser [ -L | --nolocales ]: Do not copy host's locales into container
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser [ -S | --auth-key ]: ssh public key file for datasource [ds]
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser [ -u | --userdata ]: user-data file for cloud-init [ds]
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser## This is a wrapper around upstart's /sbin/start to ensure that
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser## calling 'start' on a job after writing it to /etc/init will function
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser## correctly despite broken/missing support for inotify in overlayfs.
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moserreal() { exec -a /sbin/start "/sbin/start.real" "$@"; }
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser# no args or not root
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser# find first argument that doesn't start with '-' as 'job'
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser# if job isn't there, no reason to check further
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser[ -n "$job" ] && [ -f "/etc/init/$job.conf" ] || real "$@"
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser# on Unknown, 'status' exits 1, and prints 'Unknown job' to stderr.
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser[ $? -eq 1 -a "${out#*nknown job}" != "$out" ] || real "$@"
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser # patch /sbin/start inside root_d to deal with lack of inotify
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser { debug 1 "$root_d 'start' seems already patched"; return 1; }
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser { error "failed to patch /sbin/start for overlayfs"; return 1; }
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser local long_opts="auth-key:,cloud,help,hostid:,name:,nolocales:,patch-start,userdata:,verbose"
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser --options "${short_opts}" --long "${long_opts}" -- "$@" 2>/dev/null) ||
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser if [ $getopt_ret -eq 0 ]; then
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser { error "Unexpected error reading usage"; return 1; }
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser local userdata="" hostid="" authkey="" locales=1 cloud=0 name=""
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser while [ $# -ne 0 ]; do
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser -h|--help) prep_usage; return 0;;
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser { error "--auth-key: '$next' not a file"; return 1; }
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser { error "--userdata: '$next' not a file"; return 1; }
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser --) shift; break;;
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser error "expected 1 arguments, got ($_LXC_HOOK) $#: $*";
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser if [ $getopt_ret -ne 0 -a "$_LXC_HOOK" = "clone" ]; then
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser # getopt above failed, but we were called from lxc clone. there might
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser # be multiple clone hooks and the args provided here not for us. This
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser # seems like not the greatest interface, so all we'll do is mention it.
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser error "${0##*}: usage failed, continuing with defaults"
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser [ "$patch_start" -eq 0 ] || patch_start "$root_d" ||
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser { error "failed to patch start for overlayfs"; return 1; }
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser if [ $cloud -eq 1 ]; then
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser debug 1 "--cloud provided, not modifying seed in '$seed_d'"
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser hostid=$(uuidgen | cut -c -8) && [ -n "$hostid" ] ||
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser { error "failed to create '$seed_d'"; return 1; }
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser echo "instance-id: lxc-$hostid" > "$seed_d/meta-data" ||
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser { error "failed to write to $seed_d/meta-data"; return 1; }
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser [ $? -eq 0 ] ||
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser { error "failed to write public keys to metadata"; return 1; }
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser if [ $locales -eq 1 ]; then
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser error "failed to cp '/$larch' '$root_d/$larch'";
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser local lc=$(locale | awk -F= '/LANG=/ {print $NF; }')
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser echo "output: {all: '| tee -a /var/log/cloud-init-output.log'}"
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser error "failed to write user-data write to '$seed_d/user-data'";
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser # main just joins 2 modes of being called. from user one from lxc clone
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser if [ -n "$LXC_ROOTFS_MOUNT" -a "$3" = "clone" ]; then
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser # if mountpoint is overlayfs then add '--patch-start'
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser [ "${LXC_ROOTFS_PATH#overlayfs}" != "${LXC_ROOTFS_PATH}" ] &&
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser debug 1 prep "--name=$name" $pstart "$LXC_ROOTFS_MOUNT" "$@"
d24d56d7ee3420bb79238ff84cad07c20cf4757dScott Moser prep "--name=$name" $pstart "$LXC_ROOTFS_MOUNT" "$@"
65d8ae9c4a66f5ca85289c02dc06d63261c84619Scott Moser# vi: ts=4 expandtab