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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 "$@" 1>&2; } | |
1e0f62ac | 19 | debug() { [ "$VERBOSITY" -ge "$1" ] || return 0; shift; error "$@"; } |
65d8ae9c SM |
20 | fail() { [ $# -eq 0 ] || error "$@"; exit 1; } |
21 | ||
22 | prep_usage() { | |
23 | cat <<EOF | |
24 | Usage: ${0##*/} [options] root-dir | |
25 | ||
26 | root-dir is the root directory to operate on | |
27 | ||
28 | [ -C | --cloud ]: do not configure a datasource. incompatible with | |
29 | options marked '[ds]' | |
30 | [ -i | --instance-id]: instance-id for cloud-init, defaults to random [ds] | |
31 | [ -L | --nolocales ]: Do not copy host's locales into container | |
32 | [ -S | --auth-key ]: ssh public key file for datasource [ds] | |
33 | [ -u | --userdata ]: user-data file for cloud-init [ds] | |
5d066f24 | 34 | [ -V | --vendordata ]: vendor-data file for cloud-init [ds] |
65d8ae9c SM |
35 | |
36 | EOF | |
37 | } | |
38 | ||
39 | prep() { | |
40 | local short_opts="Chi:L:S:u:v" | |
5d066f24 | 41 | local long_opts="auth-key:,cloud,help,hostid:,name:,nolocales:,create-etc-init,userdata:,vendordata:,verbose" |
65d8ae9c SM |
42 | local getopt_out getopt_ret |
43 | getopt_out=$(getopt --name "${0##*/}" \ | |
44 | --options "${short_opts}" --long "${long_opts}" -- "$@" 2>/dev/null) || | |
45 | : | |
46 | getopt_ret=$? | |
47 | if [ $getopt_ret -eq 0 ]; then | |
48 | eval set -- "${getopt_out}" || | |
49 | { error "Unexpected error reading usage"; return 1; } | |
50 | fi | |
51 | ||
52 | local cur="" next="" | |
5d066f24 | 53 | local vendordata="" userdata="" hostid="" authkey="" locales=1 cloud=0 |
cb0c6c02 | 54 | local create_etc_init=0 name="ubuntucloud-lxc" |
d24d56d7 | 55 | |
65d8ae9c SM |
56 | while [ $# -ne 0 ]; do |
57 | cur="$1"; next="$2"; | |
58 | case "$cur" in | |
59 | -C|--cloud) cloud=1;; | |
60 | -h|--help) prep_usage; return 0;; | |
61 | --name) name="$next";; | |
62 | -i|--hostid) hostid="$next";; | |
63 | -L|--nolocales) locales=0;; | |
fb760f70 | 64 | --create-etc-init) create_etc_init=1;; |
65d8ae9c SM |
65 | -S|--auth-key) |
66 | [ -f "$next" ] || | |
67 | { error "--auth-key: '$next' not a file"; return 1; } | |
68 | authkey="$next";; | |
5d066f24 SM |
69 | -V|--vendordata) |
70 | [ -f "$next" ] || | |
71 | { error "--vendordata: '$next' not a file"; return 1; } | |
72 | vendordata="$next";; | |
65d8ae9c SM |
73 | -u|--userdata) |
74 | [ -f "$next" ] || | |
75 | { error "--userdata: '$next' not a file"; return 1; } | |
76 | userdata="$next";; | |
77 | -v|--verbose) VERBOSITY=$((${VERBOSITY}+1));; | |
78 | --) shift; break;; | |
79 | esac | |
80 | shift; | |
81 | done | |
82 | ||
83 | [ $# -eq 1 ] || { | |
84 | prep_usage 1>&2; | |
85 | error "expected 1 arguments, got ($_LXC_HOOK) $#: $*"; | |
86 | return 1; | |
87 | } | |
88 | ||
89 | local root_d="$1"; | |
90 | ||
91 | if [ $getopt_ret -ne 0 -a "$_LXC_HOOK" = "clone" ]; then | |
92 | # getopt above failed, but we were called from lxc clone. there might | |
93 | # be multiple clone hooks and the args provided here not for us. This | |
94 | # seems like not the greatest interface, so all we'll do is mention it. | |
95 | error "${0##*}: usage failed, continuing with defaults" | |
96 | fi | |
97 | ||
fb760f70 SM |
98 | [ "$create_etc_init" -eq 0 ] || |
99 | echo "#upstart needs help for overlayfs (LP: #1213925)." > \ | |
100 | "$root_d/etc/init/.overlayfs-upstart-helper" || | |
101 | { error "failed to create /etc/init in overlay"; return 1; } | |
d24d56d7 | 102 | |
65d8ae9c SM |
103 | local seed_d="" |
104 | seed_d="$root_d/var/lib/cloud/seed/nocloud-net" | |
cb0c6c02 SM |
105 | |
106 | echo "$name" > "$root_d/etc/hostname" || | |
107 | { error "failed to write /etc/hostname"; return 1; } | |
108 | ||
65d8ae9c SM |
109 | if [ $cloud -eq 1 ]; then |
110 | debug 1 "--cloud provided, not modifying seed in '$seed_d'" | |
111 | else | |
112 | if [ -z "$hostid" ]; then | |
113 | hostid=$(uuidgen | cut -c -8) && [ -n "$hostid" ] || | |
114 | { error "failed to get hostid"; return 1; } | |
115 | fi | |
116 | mkdir -p "$seed_d" || | |
117 | { error "failed to create '$seed_d'"; return 1; } | |
118 | ||
119 | echo "instance-id: lxc-$hostid" > "$seed_d/meta-data" || | |
120 | { error "failed to write to $seed_d/meta-data"; return 1; } | |
cb0c6c02 SM |
121 | |
122 | echo "local-hostname: $name" >> "$seed_d/meta-data" || | |
123 | { error "failed to write to $seed_d/meta-data"; return 1; } | |
65d8ae9c SM |
124 | |
125 | if [ -n "$authkey" ]; then | |
126 | { | |
127 | echo "public-keys:" && | |
128 | sed -e '/^$/d' -e 's,^,- ,' "$authkey" | |
129 | } >> "$seed_d/meta-data" | |
130 | [ $? -eq 0 ] || | |
131 | { error "failed to write public keys to metadata"; return 1; } | |
132 | fi | |
133 | ||
134 | local larch="usr/lib/locale/locale-archive" | |
135 | if [ $locales -eq 1 ]; then | |
136 | cp "/$larch" "$root_d/$larch" || { | |
137 | error "failed to cp '/$larch' '$root_d/$larch'"; | |
138 | return 1; | |
139 | } | |
140 | fi | |
141 | ||
142 | if [ -z "$MIRROR" ]; then | |
143 | MIRROR="http://archive.ubuntu.com/ubuntu" | |
144 | fi | |
145 | ||
79159a86 SM |
146 | if [ -n "$userdata" ]; then |
147 | cp "$userdata" "$seed_d/user-data" | |
148 | else | |
149 | { | |
65d8ae9c SM |
150 | local lc=$(locale | awk -F= '/LANG=/ {print $NF; }') |
151 | echo "#cloud-config" | |
152 | echo "output: {all: '| tee -a /var/log/cloud-init-output.log'}" | |
153 | echo "apt_mirror: $MIRROR" | |
154 | echo "manage_etc_hosts: localhost" | |
155 | [ -z "$LANG" ] || echo "locale: $LANG"; | |
156 | echo "password: ubuntu" | |
157 | echo "chpasswd: { expire: false; }" | |
79159a86 SM |
158 | } > "$seed_d/user-data" |
159 | fi | |
65d8ae9c SM |
160 | [ $? -eq 0 ] || { |
161 | error "failed to write user-data write to '$seed_d/user-data'"; | |
162 | return 1; | |
163 | } | |
5d066f24 SM |
164 | |
165 | if [ -n "$vendordata" ]; then | |
166 | cp "$vendordata" "$seed_d/vendor-data" || { | |
167 | error "failed copy vendordata to $seed_d/vendor-data"; | |
168 | return 1; | |
169 | } | |
170 | fi | |
65d8ae9c SM |
171 | fi |
172 | ||
173 | } | |
174 | ||
175 | main() { | |
176 | # main just joins 2 modes of being called. from user one from lxc clone | |
177 | local _LXC_HOOK | |
178 | if [ -n "$LXC_ROOTFS_MOUNT" -a "$3" = "clone" ]; then | |
179 | _LXC_HOOK="clone" | |
fb760f70 | 180 | local name="$1" create_etc_init="" |
65d8ae9c | 181 | shift 3 |
fb760f70 | 182 | # if mountpoint is overlayfs then add '--create-etc-init' |
d24d56d7 | 183 | [ "${LXC_ROOTFS_PATH#overlayfs}" != "${LXC_ROOTFS_PATH}" ] && |
fb760f70 SM |
184 | create_etc_init="--create-etc-init" |
185 | debug 1 prep "--name=$name" $create_etc_init "$LXC_ROOTFS_MOUNT" "$@" | |
186 | prep "--name=$name" $create_etc_init "$LXC_ROOTFS_MOUNT" "$@" | |
65d8ae9c SM |
187 | else |
188 | _LXC_HOOK="" | |
189 | prep "$@" | |
190 | fi | |
191 | return $? | |
192 | } | |
193 | ||
194 | main "$@" | |
195 | ||
196 | # vi: ts=4 expandtab |