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65d8ae9c | 1 | #!/bin/bash |
79159a86 SM |
2 | ## If the container being cloned has one or more lxc.hook.clone |
3 | ## specified, then the specified hooks will be called for the new | |
4 | ## container. The arguments passed to the clone hook are: | |
65d8ae9c SM |
5 | ## 1. the container name |
6 | ## 2. a section ('lxc') | |
7 | ## 3. hook type ('clone') | |
8 | ## 4. .. additional arguments to lxc-clone | |
9 | ## Environment variables: | |
79159a86 SM |
10 | ## LXC_ROOTFS_MOUNT: path to the root filesystem |
11 | ## LXC_CONFIG_FILE: path to config file | |
12 | ## LXC_SRC_NAME: old container name | |
13 | ## LXC_ROOTFS_PATH: path or device on which the root fs is located | |
65d8ae9c | 14 | |
d24d56d7 | 15 | set -f |
54e339f9 | 16 | VERBOSITY="0" |
65d8ae9c SM |
17 | |
18 | error() { echo "$@" 1>&2; } | |
79159a86 | 19 | debug() { [ "$VERBOSITY" -ge "$1" ] || return; shift; error "$@"; } |
65d8ae9c SM |
20 | fail() { [ $# -eq 0 ] || error "$@"; exit 1; } |
21 | ||
22 | prep_usage() { | |
23 | cat <<EOF | |
24 | Usage: ${0##*/} [options] root-dir | |
25 | ||
26 | root-dir is the root directory to operate on | |
27 | ||
28 | [ -C | --cloud ]: do not configure a datasource. incompatible with | |
29 | options marked '[ds]' | |
30 | [ -i | --instance-id]: instance-id for cloud-init, defaults to random [ds] | |
31 | [ -L | --nolocales ]: Do not copy host's locales into container | |
32 | [ -S | --auth-key ]: ssh public key file for datasource [ds] | |
33 | [ -u | --userdata ]: user-data file for cloud-init [ds] | |
34 | ||
35 | EOF | |
36 | } | |
37 | ||
38 | prep() { | |
39 | local short_opts="Chi:L:S:u:v" | |
fb760f70 | 40 | local long_opts="auth-key:,cloud,help,hostid:,name:,nolocales:,create-etc-init,userdata:,verbose" |
65d8ae9c SM |
41 | local getopt_out getopt_ret |
42 | getopt_out=$(getopt --name "${0##*/}" \ | |
43 | --options "${short_opts}" --long "${long_opts}" -- "$@" 2>/dev/null) || | |
44 | : | |
45 | getopt_ret=$? | |
46 | if [ $getopt_ret -eq 0 ]; then | |
47 | eval set -- "${getopt_out}" || | |
48 | { error "Unexpected error reading usage"; return 1; } | |
49 | fi | |
50 | ||
51 | local cur="" next="" | |
52 | local userdata="" hostid="" authkey="" locales=1 cloud=0 name="" | |
fb760f70 | 53 | local create_etc_init=0 |
d24d56d7 | 54 | |
65d8ae9c SM |
55 | while [ $# -ne 0 ]; do |
56 | cur="$1"; next="$2"; | |
57 | case "$cur" in | |
58 | -C|--cloud) cloud=1;; | |
59 | -h|--help) prep_usage; return 0;; | |
60 | --name) name="$next";; | |
61 | -i|--hostid) hostid="$next";; | |
62 | -L|--nolocales) locales=0;; | |
fb760f70 | 63 | --create-etc-init) create_etc_init=1;; |
65d8ae9c SM |
64 | -S|--auth-key) |
65 | [ -f "$next" ] || | |
66 | { error "--auth-key: '$next' not a file"; return 1; } | |
67 | authkey="$next";; | |
68 | -u|--userdata) | |
69 | [ -f "$next" ] || | |
70 | { error "--userdata: '$next' not a file"; return 1; } | |
71 | userdata="$next";; | |
72 | -v|--verbose) VERBOSITY=$((${VERBOSITY}+1));; | |
73 | --) shift; break;; | |
74 | esac | |
75 | shift; | |
76 | done | |
77 | ||
78 | [ $# -eq 1 ] || { | |
79 | prep_usage 1>&2; | |
80 | error "expected 1 arguments, got ($_LXC_HOOK) $#: $*"; | |
81 | return 1; | |
82 | } | |
83 | ||
84 | local root_d="$1"; | |
85 | ||
86 | if [ $getopt_ret -ne 0 -a "$_LXC_HOOK" = "clone" ]; then | |
87 | # getopt above failed, but we were called from lxc clone. there might | |
88 | # be multiple clone hooks and the args provided here not for us. This | |
89 | # seems like not the greatest interface, so all we'll do is mention it. | |
90 | error "${0##*}: usage failed, continuing with defaults" | |
91 | fi | |
92 | ||
fb760f70 SM |
93 | [ "$create_etc_init" -eq 0 ] || |
94 | echo "#upstart needs help for overlayfs (LP: #1213925)." > \ | |
95 | "$root_d/etc/init/.overlayfs-upstart-helper" || | |
96 | { error "failed to create /etc/init in overlay"; return 1; } | |
d24d56d7 | 97 | |
65d8ae9c SM |
98 | local seed_d="" |
99 | seed_d="$root_d/var/lib/cloud/seed/nocloud-net" | |
100 | if [ $cloud -eq 1 ]; then | |
101 | debug 1 "--cloud provided, not modifying seed in '$seed_d'" | |
102 | else | |
103 | if [ -z "$hostid" ]; then | |
104 | hostid=$(uuidgen | cut -c -8) && [ -n "$hostid" ] || | |
105 | { error "failed to get hostid"; return 1; } | |
106 | fi | |
107 | mkdir -p "$seed_d" || | |
108 | { error "failed to create '$seed_d'"; return 1; } | |
109 | ||
110 | echo "instance-id: lxc-$hostid" > "$seed_d/meta-data" || | |
111 | { error "failed to write to $seed_d/meta-data"; return 1; } | |
112 | ||
113 | if [ -n "$authkey" ]; then | |
114 | { | |
115 | echo "public-keys:" && | |
116 | sed -e '/^$/d' -e 's,^,- ,' "$authkey" | |
117 | } >> "$seed_d/meta-data" | |
118 | [ $? -eq 0 ] || | |
119 | { error "failed to write public keys to metadata"; return 1; } | |
120 | fi | |
121 | ||
122 | local larch="usr/lib/locale/locale-archive" | |
123 | if [ $locales -eq 1 ]; then | |
124 | cp "/$larch" "$root_d/$larch" || { | |
125 | error "failed to cp '/$larch' '$root_d/$larch'"; | |
126 | return 1; | |
127 | } | |
128 | fi | |
129 | ||
130 | if [ -z "$MIRROR" ]; then | |
131 | MIRROR="http://archive.ubuntu.com/ubuntu" | |
132 | fi | |
133 | ||
79159a86 SM |
134 | if [ -n "$userdata" ]; then |
135 | cp "$userdata" "$seed_d/user-data" | |
136 | else | |
137 | { | |
65d8ae9c SM |
138 | local lc=$(locale | awk -F= '/LANG=/ {print $NF; }') |
139 | echo "#cloud-config" | |
140 | echo "output: {all: '| tee -a /var/log/cloud-init-output.log'}" | |
141 | echo "apt_mirror: $MIRROR" | |
142 | echo "manage_etc_hosts: localhost" | |
143 | [ -z "$LANG" ] || echo "locale: $LANG"; | |
144 | echo "password: ubuntu" | |
145 | echo "chpasswd: { expire: false; }" | |
79159a86 SM |
146 | } > "$seed_d/user-data" |
147 | fi | |
65d8ae9c SM |
148 | [ $? -eq 0 ] || { |
149 | error "failed to write user-data write to '$seed_d/user-data'"; | |
150 | return 1; | |
151 | } | |
152 | fi | |
153 | ||
154 | } | |
155 | ||
156 | main() { | |
157 | # main just joins 2 modes of being called. from user one from lxc clone | |
158 | local _LXC_HOOK | |
159 | if [ -n "$LXC_ROOTFS_MOUNT" -a "$3" = "clone" ]; then | |
160 | _LXC_HOOK="clone" | |
fb760f70 | 161 | local name="$1" create_etc_init="" |
65d8ae9c | 162 | shift 3 |
fb760f70 | 163 | # if mountpoint is overlayfs then add '--create-etc-init' |
d24d56d7 | 164 | [ "${LXC_ROOTFS_PATH#overlayfs}" != "${LXC_ROOTFS_PATH}" ] && |
fb760f70 SM |
165 | create_etc_init="--create-etc-init" |
166 | debug 1 prep "--name=$name" $create_etc_init "$LXC_ROOTFS_MOUNT" "$@" | |
167 | prep "--name=$name" $create_etc_init "$LXC_ROOTFS_MOUNT" "$@" | |
65d8ae9c SM |
168 | else |
169 | _LXC_HOOK="" | |
170 | prep "$@" | |
171 | fi | |
172 | return $? | |
173 | } | |
174 | ||
175 | main "$@" | |
176 | ||
177 | # vi: ts=4 expandtab |