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cloud-init: add manage_etc_hosts to cloud init config
[qemu-server.git] / PVE / QemuServer / Cloudinit.pm
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1package PVE::QemuServer::Cloudinit;
2
3use strict;
4use warnings;
5
6use File::Path;
7use Digest::SHA;
8use URI::Escape;
9
10use PVE::Tools qw(run_command file_set_contents);
11use PVE::Storage;
12use PVE::QemuServer;
13
0c9a7596 14sub commit_cloudinit_disk {
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15 my ($vmid, $conf, $drive, $volname, $storeid, $files, $label) = @_;
16
17 my $path = "/run/pve/cloudinit/$vmid/";
18 mkpath $path;
19 foreach my $filepath (keys %$files) {
20 if ($filepath !~ m@^(.*)\/[^/]+$@) {
21 die "internal error: bad file name in cloud-init image: $filepath\n";
22 }
23 my $dirname = $1;
24 mkpath "$path/$dirname";
25
26 my $contents = $files->{$filepath};
27 file_set_contents("$path/$filepath", $contents);
28 }
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29
30 my $storecfg = PVE::Storage::config();
31 my $iso_path = PVE::Storage::path($storecfg, $drive->{file});
32 my $scfg = PVE::Storage::storage_config($storecfg, $storeid);
33 my $format = PVE::QemuServer::qemu_img_format($scfg, $volname);
0c9a7596 34
3db6e4ab 35 my $size = PVE::Storage::file_size_info($iso_path);
0c9a7596 36
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37 eval {
38 run_command([['genisoimage', '-R', '-V', $label, $path],
39 ['qemu-img', 'dd', '-f', 'raw', '-O', $format,
40 'isize=0', "osize=$size", "of=$iso_path"]]);
41 };
42 my $err = $@;
43 rmtree($path);
44 die $err if $err;
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45}
46
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47sub get_cloudinit_format {
48 my ($conf) = @_;
49 if (defined(my $format = $conf->{citype})) {
50 return $format;
51 }
0c9a7596 52
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53 # No format specified, default based on ostype because windows'
54 # cloudbased-init only supports configdrivev2, whereas on linux we need
55 # to use mac addresses because regular cloudinit doesn't map 'ethX' to
56 # the new predicatble network device naming scheme.
57 if (defined(my $ostype = $conf->{ostype})) {
58 return 'configdrive2'
59 if PVE::QemuServer::windows_version($ostype);
60 }
0c9a7596 61
41cd94a0 62 return 'nocloud';
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63}
64
e8ac2138 65sub get_hostname_fqdn {
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66 my ($conf, $vmid) = @_;
67 my $hostname = $conf->{name} // "VM$vmid";
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68 my $fqdn;
69 if ($hostname =~ /\./) {
70 $fqdn = $hostname;
71 $hostname =~ s/\..*$//;
72 } elsif (my $search = $conf->{searchdomain}) {
73 $fqdn = "$hostname.$search";
0c9a7596 74 }
e8ac2138 75 return ($hostname, $fqdn);
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76}
77
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78sub get_dns_conf {
79 my ($conf) = @_;
80
81 # Same logic as in pve-container, but without the testcase special case
82 my $host_resolv_conf = PVE::INotify::read_file('resolvconf');
83
84 my $searchdomains = [
85 split(/\s+/, $conf->{searchdomain} // $host_resolv_conf->{search})
86 ];
87
88 my $nameserver = $conf->{nameserver};
89 if (!defined($nameserver)) {
90 $nameserver = [grep { $_ } $host_resolv_conf->@{qw(dns1 dns2 dns3)}];
91 } else {
92 $nameserver = [split(/\s+/, $nameserver)];
93 }
94
95 return ($searchdomains, $nameserver);
96}
97
41cd94a0 98sub cloudinit_userdata {
9a6ccb12 99 my ($conf, $vmid) = @_;
41cd94a0 100
9a6ccb12 101 my ($hostname, $fqdn) = get_hostname_fqdn($conf, $vmid);
41cd94a0 102
7b42f951 103 my $content = "#cloud-config\n";
41cd94a0 104
e8ac2138 105 $content .= "hostname: $hostname\n";
8de34458 106 $content .= "manage_etc_hosts: true\n";
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107 $content .= "fqdn: $fqdn\n" if defined($fqdn);
108
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109 my $username = $conf->{ciuser};
110 my $password = $conf->{cipassword};
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111
112 $content .= "user: $username\n" if defined($username);
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113 $content .= "disable_root: False\n" if defined($username) && $username eq 'root';
114 $content .= "password: $password\n" if defined($password);
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115
116 if (defined(my $keys = $conf->{sshkeys})) {
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117 $keys = URI::Escape::uri_unescape($keys);
118 $keys = [map { chomp $_; $_ } split(/\n/, $keys)];
119 $keys = [grep { /\S/ } @$keys];
41cd94a0 120 $content .= "ssh_authorized_keys:\n";
0c9a7596 121 foreach my $k (@$keys) {
41cd94a0 122 $content .= " - $k\n";
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123 }
124 }
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125 $content .= "chpasswd:\n";
126 $content .= " expire: False\n";
127
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128 if (!defined($username) || $username ne 'root') {
129 $content .= "users:\n";
130 $content .= " - default\n";
131 }
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132
133 $content .= "package_upgrade: true\n";
134
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135 return $content;
136}
137
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138sub configdrive2_network {
139 my ($conf) = @_;
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140
141 my $content = "auto lo\n";
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142 $content .= "iface lo inet loopback\n\n";
143
144 my ($searchdomains, $nameservers) = get_dns_conf($conf);
145 if ($nameservers && @$nameservers) {
146 $nameservers = join(' ', @$nameservers);
147 $content .= " dns_nameservers $nameservers\n";
148 }
149 if ($searchdomains && @$searchdomains) {
150 $searchdomains = join(' ', @$searchdomains);
151 $content .= " dns_search $searchdomains\n";
152 }
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153
154 my @ifaces = grep(/^net(\d+)$/, keys %$conf);
155 foreach my $iface (@ifaces) {
156 (my $id = $iface) =~ s/^net//;
157 next if !$conf->{"ipconfig$id"};
41cd94a0 158 my $net = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
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159 $id = "eth$id";
160
161 $content .="auto $id\n";
162 if ($net->{ip}) {
163 if ($net->{ip} eq 'dhcp') {
164 $content .= "iface $id inet dhcp\n";
165 } else {
166 my ($addr, $mask) = split('/', $net->{ip});
167 $content .= "iface $id inet static\n";
168 $content .= " address $addr\n";
169 $content .= " netmask $PVE::Network::ipv4_reverse_mask->[$mask]\n";
170 $content .= " gateway $net->{gw}\n" if $net->{gw};
171 }
172 }
173 if ($net->{ip6}) {
174 if ($net->{ip6} =~ /^(auto|dhcp)$/) {
175 $content .= "iface $id inet6 $1\n";
176 } else {
177 my ($addr, $mask) = split('/', $net->{ip6});
178 $content .= "iface $id inet6 static\n";
179 $content .= " address $addr\n";
180 $content .= " netmask $mask\n";
181 $content .= " gateway $net->{gw6}\n" if $net->{gw6};
182 }
183 }
184 }
185
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186 return $content;
187}
188
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189sub configdrive2_metadata {
190 my ($uuid) = @_;
191 return <<"EOF";
192{
193 "uuid": "$uuid",
194 "network_config": { "content_path": "/content/0000" }
195}
196EOF
197}
198
199sub generate_configdrive2 {
200 my ($conf, $vmid, $drive, $volname, $storeid) = @_;
201
9a6ccb12 202 my $user_data = cloudinit_userdata($conf, $vmid);
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203 my $network_data = configdrive2_network($conf);
204
205 my $digest_data = $user_data . $network_data;
206 my $uuid_str = Digest::SHA::sha1_hex($digest_data);
207
208 my $meta_data = configdrive2_metadata($uuid_str);
209
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210 my $files = {
211 '/openstack/latest/user_data' => $user_data,
212 '/openstack/content/0000' => $network_data,
213 '/openstack/latest/meta_data.json' => $meta_data
214 };
215 commit_cloudinit_disk($vmid, $conf, $drive, $volname, $storeid, $files, 'config-2');
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216}
217
218sub nocloud_network_v2 {
219 my ($conf) = @_;
220
221 my $content = '';
222
223 my $head = "version: 2\n"
224 . "ethernets:\n";
225
67864d19 226 my $dns_done;
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227
228 my @ifaces = grep(/^net(\d+)$/, keys %$conf);
229 foreach my $iface (@ifaces) {
230 (my $id = $iface) =~ s/^net//;
231 next if !$conf->{"ipconfig$id"};
232
233 # indentation - network interfaces are inside an 'ethernets' hash
234 my $i = ' ';
235
236 my $net = PVE::QemuServer::parse_net($conf->{$iface});
237 my $ipconfig = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
238
239 my $mac = $net->{macaddr}
240 or die "network interface '$iface' has no mac address\n";
241
67864d19 242 $content .= "${i}$iface:\n";
41cd94a0 243 $i .= ' ';
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244 $content .= "${i}match:\n"
245 . "${i} macaddress: \"$mac\"\n"
246 . "${i}set-name: eth$id\n";
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247 my @addresses;
248 if (defined(my $ip = $ipconfig->{ip})) {
249 if ($ip eq 'dhcp') {
67864d19 250 $content .= "${i}dhcp4: true\n";
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251 } else {
252 push @addresses, $ip;
253 }
254 }
255 if (defined(my $ip = $ipconfig->{ip6})) {
256 if ($ip eq 'dhcp') {
67864d19 257 $content .= "${i}dhcp6: true\n";
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258 } else {
259 push @addresses, $ip;
260 }
261 }
262 if (@addresses) {
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263 $content .= "${i}addresses:\n";
264 $content .= "${i}- $_\n" foreach @addresses;
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265 }
266 if (defined(my $gw = $ipconfig->{gw})) {
67864d19 267 $content .= "${i}gateway4: $gw\n";
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268 }
269 if (defined(my $gw = $ipconfig->{gw6})) {
67864d19 270 $content .= "${i}gateway6: $gw\n";
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271 }
272
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273 next if $dns_done;
274 $dns_done = 1;
275
276 my ($searchdomains, $nameservers) = get_dns_conf($conf);
277 if ($searchdomains || $nameservers) {
278 $content .= "${i}nameservers:\n";
279 if (defined($nameservers) && @$nameservers) {
280 $content .= "${i} addresses:\n";
281 $content .= "${i} - $_\n" foreach @$nameservers;
282 }
283 if (defined($searchdomains) && @$searchdomains) {
284 $content .= "${i} search:\n";
285 $content .= "${i} - $_\n" foreach @$searchdomains;
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286 }
287 }
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288 }
289
290 return $head.$content;
291}
292
293sub nocloud_network {
294 my ($conf) = @_;
295
296 my $content = "version: 1\n"
297 . "config:\n";
298
299 my @ifaces = grep(/^net(\d+)$/, keys %$conf);
300 foreach my $iface (@ifaces) {
301 (my $id = $iface) =~ s/^net//;
302 next if !$conf->{"ipconfig$id"};
303
304 # indentation - network interfaces are inside an 'ethernets' hash
305 my $i = ' ';
306
307 my $net = PVE::QemuServer::parse_net($conf->{$iface});
308 my $ipconfig = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
309
310 my $mac = $net->{macaddr}
311 or die "network interface '$iface' has no mac address\n";
312
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313 $content .= "${i}- type: physical\n"
314 . "${i} name: eth$id\n"
315 . "${i} mac_address: $mac\n"
316 . "${i} subnets:\n";
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317 $i .= ' ';
318 if (defined(my $ip = $ipconfig->{ip})) {
319 if ($ip eq 'dhcp') {
67864d19 320 $content .= "${i}- type: dhcp4\n";
41cd94a0 321 } else {
67864d19 322 $content .= "${i}- type: static\n"
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323 . "${i} address: $ip\n";
324 if (defined(my $gw = $ipconfig->{gw})) {
67864d19 325 $content .= "${i} gateway: $gw\n";
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326 }
327 }
328 }
329 if (defined(my $ip = $ipconfig->{ip6})) {
330 if ($ip eq 'dhcp') {
67864d19 331 $content .= "${i}- type: dhcp6\n";
41cd94a0 332 } else {
67864d19 333 $content .= "${i}- type: static6\n"
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334 . "${i} address: $ip\n";
335 if (defined(my $gw = $ipconfig->{gw6})) {
67864d19 336 $content .= "${i} gateway: $gw\n";
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337 }
338 }
339 }
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340 }
341
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342 my $i = ' ';
343 my ($searchdomains, $nameservers) = get_dns_conf($conf);
344 if ($searchdomains || $nameservers) {
41cd94a0 345 $content .= "${i}- type: nameserver\n";
67864d19 346 if (defined($nameservers) && @$nameservers) {
41cd94a0 347 $content .= "${i} address:\n";
67864d19 348 $content .= "${i} - $_\n" foreach @$nameservers;
41cd94a0 349 }
67864d19 350 if (defined($searchdomains) && @$searchdomains) {
41cd94a0 351 $content .= "${i} search:\n";
67864d19 352 $content .= "${i} - $_\n" foreach @$searchdomains;
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353 }
354 }
355
356 return $content;
357}
358
359sub nocloud_metadata {
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360 my ($uuid) = @_;
361 return "instance-id: $uuid\n";
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362}
363
364sub generate_nocloud {
365 my ($conf, $vmid, $drive, $volname, $storeid) = @_;
366
9a6ccb12 367 my $user_data = cloudinit_userdata($conf, $vmid);
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368 my $network_data = nocloud_network($conf);
369
e8ac2138 370 my $digest_data = $user_data . $network_data;
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371 my $uuid_str = Digest::SHA::sha1_hex($digest_data);
372
e8ac2138 373 my $meta_data = nocloud_metadata($uuid_str);
41cd94a0 374
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375 my $files = {
376 '/user-data' => $user_data,
377 '/network-config' => $network_data,
378 '/meta-data' => $meta_data
379 };
380 commit_cloudinit_disk($vmid, $conf, $drive, $volname, $storeid, $files, 'cidata');
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381}
382
383my $cloudinit_methods = {
384 configdrive2 => \&generate_configdrive2,
385 nocloud => \&generate_nocloud,
386};
387
388sub generate_cloudinitconfig {
389 my ($conf, $vmid) = @_;
390
391 my $format = get_cloudinit_format($conf);
392
393 PVE::QemuServer::foreach_drive($conf, sub {
394 my ($ds, $drive) = @_;
395
396 my ($storeid, $volname) = PVE::Storage::parse_volume_id($drive->{file}, 1);
397
398 return if !$volname || $volname !~ m/vm-$vmid-cloudinit/;
399
400 my $generator = $cloudinit_methods->{$format}
401 or die "missing cloudinit methods for format '$format'\n";
402
403 $generator->($conf, $vmid, $drive, $volname, $storeid);
404 });
405}
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406
4071;