--- /dev/null
+#!/bin/bash
+## If the container being cloned has one or more lxc.hook.clone specified,
+## then the specified hooks will be called for the new container. The first
+## 3 arguments passed to the clone hook will be:
+## 1. the container name
+## 2. a section ('lxc')
+## 3. hook type ('clone')
+## 4. .. additional arguments to lxc-clone
+## Environment variables:
+## LXC_ROOTFS_MOUNT: path under which the container's root fs is mounted.
+## LXC_CONFIG_FILE: The configuration file pathname
+## LXC_SRC_NAME: old container name
+## LXC_ROOTFS_PATH: path or device on which the root fs is located
+
+VERBOSITY=""
+
+error() { echo "$@" 1>&2; }
+debug() { [ "$1" -ge "$VERBOSITY" ] || return; shift; error "$@"; }
+fail() { [ $# -eq 0 ] || error "$@"; exit 1; }
+
+prep_usage() {
+cat <<EOF
+Usage: ${0##*/} [options] root-dir
+
+ root-dir is the root directory to operate on
+
+ [ -C | --cloud ]: do not configure a datasource. incompatible with
+ options marked '[ds]'
+ [ -i | --instance-id]: instance-id for cloud-init, defaults to random [ds]
+ [ -L | --nolocales ]: Do not copy host's locales into container
+ [ -S | --auth-key ]: ssh public key file for datasource [ds]
+ [ -u | --userdata ]: user-data file for cloud-init [ds]
+
+EOF
+}
+
+prep() {
+ local short_opts="Chi:L:S:u:v"
+ local long_opts="auth-key:,cloud,help,hostid:,name:,nolocales:,userdata:,verbose"
+ local getopt_out getopt_ret
+ getopt_out=$(getopt --name "${0##*/}" \
+ --options "${short_opts}" --long "${long_opts}" -- "$@" 2>/dev/null) ||
+ :
+ getopt_ret=$?
+ if [ $getopt_ret -eq 0 ]; then
+ eval set -- "${getopt_out}" ||
+ { error "Unexpected error reading usage"; return 1; }
+ fi
+
+ local cur="" next=""
+ local userdata="" hostid="" authkey="" locales=1 cloud=0 name=""
+ while [ $# -ne 0 ]; do
+ cur="$1"; next="$2";
+ case "$cur" in
+ -C|--cloud) cloud=1;;
+ -h|--help) prep_usage; return 0;;
+ --name) name="$next";;
+ -i|--hostid) hostid="$next";;
+ -L|--nolocales) locales=0;;
+ -S|--auth-key)
+ [ -f "$next" ] ||
+ { error "--auth-key: '$next' not a file"; return 1; }
+ authkey="$next";;
+ -u|--userdata)
+ [ -f "$next" ] ||
+ { error "--userdata: '$next' not a file"; return 1; }
+ userdata="$next";;
+ -v|--verbose) VERBOSITY=$((${VERBOSITY}+1));;
+ --) shift; break;;
+ esac
+ shift;
+ done
+
+ [ $# -eq 1 ] || {
+ prep_usage 1>&2;
+ error "expected 1 arguments, got ($_LXC_HOOK) $#: $*";
+ return 1;
+ }
+
+ local root_d="$1";
+
+ if [ $getopt_ret -ne 0 -a "$_LXC_HOOK" = "clone" ]; then
+ # getopt above failed, but we were called from lxc clone. there might
+ # be multiple clone hooks and the args provided here not for us. This
+ # seems like not the greatest interface, so all we'll do is mention it.
+ error "${0##*}: usage failed, continuing with defaults"
+ fi
+
+ local seed_d=""
+ seed_d="$root_d/var/lib/cloud/seed/nocloud-net"
+ if [ $cloud -eq 1 ]; then
+ debug 1 "--cloud provided, not modifying seed in '$seed_d'"
+ else
+ if [ -z "$hostid" ]; then
+ hostid=$(uuidgen | cut -c -8) && [ -n "$hostid" ] ||
+ { error "failed to get hostid"; return 1; }
+ fi
+ mkdir -p "$seed_d" ||
+ { error "failed to create '$seed_d'"; return 1; }
+
+ echo "instance-id: lxc-$hostid" > "$seed_d/meta-data" ||
+ { error "failed to write to $seed_d/meta-data"; return 1; }
+
+ if [ -n "$authkey" ]; then
+ {
+ echo "public-keys:" &&
+ sed -e '/^$/d' -e 's,^,- ,' "$authkey"
+ } >> "$seed_d/meta-data"
+ [ $? -eq 0 ] ||
+ { error "failed to write public keys to metadata"; return 1; }
+ fi
+
+ local larch="usr/lib/locale/locale-archive"
+ if [ $locales -eq 1 ]; then
+ cp "/$larch" "$root_d/$larch" || {
+ error "failed to cp '/$larch' '$root_d/$larch'";
+ return 1;
+ }
+ fi
+
+ if [ -z "$MIRROR" ]; then
+ MIRROR="http://archive.ubuntu.com/ubuntu"
+ fi
+
+ {
+ local lc=$(locale | awk -F= '/LANG=/ {print $NF; }')
+ echo "#cloud-config"
+ echo "output: {all: '| tee -a /var/log/cloud-init-output.log'}"
+ echo "apt_mirror: $MIRROR"
+ echo "manage_etc_hosts: localhost"
+ [ -z "$LANG" ] || echo "locale: $LANG";
+ echo "password: ubuntu"
+ echo "chpasswd: { expire: false; }"
+
+ } > "$seed_d/user-data"
+ [ $? -eq 0 ] || {
+ error "failed to write user-data write to '$seed_d/user-data'";
+ return 1;
+ }
+ fi
+
+}
+
+main() {
+ # main just joins 2 modes of being called. from user one from lxc clone
+ local _LXC_HOOK
+ if [ -n "$LXC_ROOTFS_MOUNT" -a "$3" = "clone" ]; then
+ _LXC_HOOK="clone"
+ local name="$1"
+ shift 3
+ debug 1 prep "--name=$name" "$LXC_ROOTFS_MOUNT" "$@"
+ prep "--name=$name" "$LXC_ROOTFS_MOUNT" "$@"
+ else
+ _LXC_HOOK=""
+ prep "$@"
+ fi
+ return $?
+}
+
+main "$@"
+
+# vi: ts=4 expandtab
#!/bin/bash
-# template script for generating ubuntu container for LXC based on released cloud
-# images
+# template script for generating ubuntu container for LXC based on released
+# cloud images.
#
# Copyright © 2012 Serge Hallyn <serge.hallyn@canonical.com>
#
set -e
+STATE_DIR="@LOCALSTATEDIR@"
+HOOK_DIR="@LXCHOOKDIR@"
+CLONE_HOOK_FN="$HOOK_DIR/ubuntu-cloud-prep"
+
if [ -r /etc/default/lxc ]; then
. /etc/default/lxc
fi
#lxc.aa_profile = lxc-container-default-with-nesting
#lxc.hook.mount = /usr/share/lxc/hooks/mountcgroups
+lxc.hook.clone = ${CLONE_HOOK_FN}
+
lxc.cgroup.devices.deny = a
# Allow any mknod (but not using the node)
lxc.cgroup.devices.allow = c *:* m
[ -r | --release <release> ]: Release name of container, defaults to host
[ --rootfs <path> ]: Path in which rootfs will be placed
[ -a | --arch ]: Arhcitecture of container, defaults to host arcitecture
-[ -C | --cloud ]: Configure container for use with meta-data service, defaults to no
[ -T | --tarball ]: Location of tarball
[ -d | --debug ]: Run with 'set -x' to debug errors
[ -s | --stream]: Use specified stream rather than 'released'
-Options, mutually exclusive of "-C" and "--cloud":
- [ -i | --hostid ]: HostID for cloud-init, defaults to random string
- [ -u | --userdata ]: Cloud-init user-data file to configure container on start
- [ -S | --auth-key ]: SSH Public key file to inject into container
- [ -L | --nolocales ]: Do not copy host's locales into container
-
+Additionally, clone hooks can be passed through (ie, --userdata). For those,
+see:
+ $CLONE_HOOK_FN --help
EOF
return 0
}
fi
eval set -- "$options"
-release=lucid
+# default release is precise, or the systems release if recognized
+release=precise
if [ -f /etc/lsb-release ]; then
. /etc/lsb-release
- case "$DISTRIB_CODENAME" in
- lucid|natty|oneiric|precise|quantal)
- release=$DISTRIB_CODENAME
- ;;
- esac
+ rels=$(ubuntu-distro-info --supported 2>/dev/null) ||
+ rels="lucid natty oneiric precise quantal raring saucy"
+ for r in $rels; do
+ [ "$DISTRIB_CODENAME" = "$r" ] && release="$r"
+ done
fi
# Code taken from debootstrap
locales=1
flushcache=0
stream="released"
+cloneargs=()
while true
do
case "$1" in
-F|--flush-cache) flushcache=1; shift 1;;
-r|--release) release=$2; shift 2;;
-a|--arch) arch=$2; shift 2;;
- -i|--hostid) host_id=$2; shift 2;;
- -u|--userdata) userdata=$2; shift 2;;
- -C|--cloud) cloud=1; shift 1;;
- -S|--auth-key) auth_key=$2; shift 2;;
- -L|--no_locales) locales=0; shift 1;;
-T|--tarball) tarball=$2; shift 2;;
-d|--debug) debug=1; shift 1;;
-s|--stream) stream=$2; shift 2;;
- --rootfs) rootfs=$2; shift 2;;
+ --rootfs) rootfs=$2; shift 2;;
+ -L|--no?locales) cloneargs[${#cloneargs[@]}]="--no-locales"; shift 1;;
+ -i|--hostid) cloneargs[${#cloneargs[@]}]="--hostid=$2"; shift 2;;
+ -u|--userdata) cloneargs[${#cloneargs[@]}]="--userdata=$2"; shift 2;;
+ -C|--cloud) cloneargs[${#cloneargs[@]}]="--cloud"; shift 1;;
+ -S|--auth-key) cloneargs[${#cloneargs[@]}]="--auth-key=$2"; shift 2;;
--) shift 1; break ;;
*) break ;;
esac
done
+cloneargs=( "--name=$name" "${cloneargs[@]}" )
+
if [ $debug -eq 1 ]; then
set -x
fi
exit 1
fi
-if [ -n "$userdata" ]; then
- if [ ! -f "$userdata" ]; then
- echo "Userdata ($userdata) does not exist"
- exit 1
- else
- userdata=`readlink -f $userdata`
- fi
-fi
-
-if [ -n "$auth_key" ]; then
- if [ ! -f "$auth_key" ]; then
- echo "--auth-key=${auth_key} must reference a file"
- exit 1
- fi
- auth_key=$(readlink -f "${auth_key}") ||
- { echo "failed to get full path for auth_key"; exit 1; }
-fi
-
if [ -z "$path" ]; then
echo "'path' parameter is required"
exit 1
# determine the url, tarball, and directory names
# download if needed
-cache="@LOCALSTATEDIR@/cache/lxc/cloud-$release"
+cache="$STATE_DIR/cache/lxc/cloud-$release"
mkdir -p $cache
mkdir -p $rootfs
cd $rootfs
tar -zxf $cache/$filename
-
-
- if [ $cloud -eq 0 ]; then
- echo "Configuring for running outside of a cloud environment"
- echo "If you want to configure for a cloud evironment, please use '-- -C' to create the container"
-
- seed_d=$rootfs/var/lib/cloud/seed/nocloud-net
- rhostid=$(uuidgen | cut -c -8)
- host_id=${hostid:-$rhostid}
- mkdir -p $seed_d
-
- cat > "$seed_d/meta-data" <<EOF
-instance-id: lxc-$host_id
-EOF
- if [ -n "$auth_key" ]; then
- {
- echo "public-keys:" &&
- sed -e '/^$/d' -e 's,^,- ,' "$auth_key" "$auth_key"
- } >> "$seed_d/meta-data"
- [ $? -eq 0 ] ||
- { echo "failed to write public keys to metadata"; exit 1; }
- fi
-
- rm $rootfs/etc/hostname
-
- if [ $locales -eq 1 ]; then
- cp /usr/lib/locale/locale-archive $rootfs/usr/lib/locale/locale-archive
- fi
-
- if [ -f "$userdata" ]; then
- echo "Using custom user-data"
- cp $userdata $seed_d/user-data
- else
-
- if [ -z "$MIRROR" ]; then
- MIRROR="http://archive.ubuntu.com/ubuntu"
- fi
-
- cat > "$seed_d/user-data" <<EOF
-#cloud-config
-output: {all: '| tee -a /var/log/cloud-init-output.log'}
-apt_mirror: $MIRROR
-manage_etc_hosts: localhost
-locale: $(/usr/bin/locale | awk -F= '/LANG=/ {print$NF}')
-password: ubuntu
-chpasswd: { expire: False }
-EOF
- fi
- else
-
- echo "Configured for running in a cloud environment."
- echo "If you do not have a meta-data service, this container will likely be useless."
-
- fi
}
if [ -n "$tarball" ]; then
do_extract_rootfs
else
- mkdir -p @LOCALSTATEDIR@/lock/subsys/
+ mkdir -p "$STATE_DIR/lock/subsys/"
(
flock -x 200
do_extract_rootfs
- ) 200>@LOCALSTATEDIR@/lock/subsys/lxc-ubuntu-cloud
+ ) 200>"$STATE_DIR/lock/subsys/lxc-ubuntu-cloud"
fi
copy_configuration $path $rootfs $name $arch $release
+"$CLONE_HOOK_FN" "${cloneargs[@]}" "$rootfs"
+
echo "Container $name created."
exit 0
projects / thirdparty / lxc.git / commitdiff
