mirror of
https://git.proxmox.com/git/qemu-server
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988be8d052
cloud-init's SLAAC option was disabled in 2018 because there was no support for it. Now that cloud-init 19.4 or newer versions are more widespread, we can finally reenable it. Also include minimum required cloud-init version for SLAAC support in format description. Tested on Ubuntu 20.04 (ci 20.4), CentOS 8 (ci 19.4), Debian 10 (ci 20.2). Signed-off-by: Mira Limbeck <m.limbeck@proxmox.com>
601 lines
17 KiB
Perl
601 lines
17 KiB
Perl
package PVE::QemuServer::Cloudinit;
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use strict;
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use warnings;
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use File::Path;
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use Digest::SHA;
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use URI::Escape;
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use MIME::Base64 qw(encode_base64);
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use PVE::Tools qw(run_command file_set_contents);
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use PVE::Storage;
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use PVE::QemuServer;
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use constant CLOUDINIT_DISK_SIZE => 4 * 1024 * 1024; # 4MiB in bytes
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sub commit_cloudinit_disk {
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my ($conf, $vmid, $drive, $volname, $storeid, $files, $label) = @_;
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my $path = "/run/pve/cloudinit/$vmid/";
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mkpath $path;
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foreach my $filepath (keys %$files) {
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if ($filepath !~ m@^(.*)\/[^/]+$@) {
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die "internal error: bad file name in cloud-init image: $filepath\n";
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}
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my $dirname = $1;
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mkpath "$path/$dirname";
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my $contents = $files->{$filepath};
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file_set_contents("$path/$filepath", $contents);
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}
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my $storecfg = PVE::Storage::config();
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my $iso_path = PVE::Storage::path($storecfg, $drive->{file});
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my $scfg = PVE::Storage::storage_config($storecfg, $storeid);
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my $format = PVE::QemuServer::qemu_img_format($scfg, $volname);
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my $size = eval { PVE::Storage::volume_size_info($storecfg, $drive->{file}) };
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if (!defined($size) || $size <= 0) {
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$volname =~ m/(vm-$vmid-cloudinit(.\Q$format\E)?)/;
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my $name = $1;
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$size = 4 * 1024;
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PVE::Storage::vdisk_alloc($storecfg, $storeid, $vmid, $format, $name, $size);
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$size *= 1024; # vdisk alloc takes KB, qemu-img dd's osize takes byte
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}
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my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
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$plugin->activate_volume($storeid, $scfg, $volname);
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print "generating cloud-init ISO\n";
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eval {
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run_command([
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['genisoimage', '-quiet', '-iso-level', '3', '-R', '-V', $label, $path],
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['qemu-img', 'dd', '-n', '-f', 'raw', '-O', $format, 'isize=0', "osize=$size", "of=$iso_path"]
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]);
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};
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my $err = $@;
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rmtree($path);
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die $err if $err;
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}
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sub get_cloudinit_format {
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my ($conf) = @_;
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if (defined(my $format = $conf->{citype})) {
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return $format;
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}
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# No format specified, default based on ostype because windows'
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# cloudbased-init only supports configdrivev2, whereas on linux we need
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# to use mac addresses because regular cloudinit doesn't map 'ethX' to
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# the new predicatble network device naming scheme.
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if (defined(my $ostype = $conf->{ostype})) {
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return 'configdrive2'
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if PVE::QemuServer::windows_version($ostype);
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}
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return 'nocloud';
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}
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sub get_hostname_fqdn {
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my ($conf, $vmid) = @_;
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my $hostname = $conf->{name} // "VM$vmid";
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my $fqdn;
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if ($hostname =~ /\./) {
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$fqdn = $hostname;
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$hostname =~ s/\..*$//;
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} elsif (my $search = $conf->{searchdomain}) {
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$fqdn = "$hostname.$search";
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}
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return ($hostname, $fqdn);
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}
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sub get_dns_conf {
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my ($conf) = @_;
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# Same logic as in pve-container, but without the testcase special case
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my $host_resolv_conf = PVE::INotify::read_file('resolvconf');
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my $searchdomains = [
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split(/\s+/, $conf->{searchdomain} // $host_resolv_conf->{search})
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];
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my $nameserver = $conf->{nameserver};
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if (!defined($nameserver)) {
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$nameserver = [grep { $_ } $host_resolv_conf->@{qw(dns1 dns2 dns3)}];
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} else {
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$nameserver = [split(/\s+/, $nameserver)];
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}
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return ($searchdomains, $nameserver);
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}
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sub cloudinit_userdata {
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my ($conf, $vmid) = @_;
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my ($hostname, $fqdn) = get_hostname_fqdn($conf, $vmid);
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my $content = "#cloud-config\n";
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$content .= "hostname: $hostname\n";
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$content .= "manage_etc_hosts: true\n";
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$content .= "fqdn: $fqdn\n" if defined($fqdn);
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my $username = $conf->{ciuser};
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my $password = $conf->{cipassword};
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$content .= "user: $username\n" if defined($username);
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$content .= "disable_root: False\n" if defined($username) && $username eq 'root';
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$content .= "password: $password\n" if defined($password);
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if (defined(my $keys = $conf->{sshkeys})) {
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$keys = URI::Escape::uri_unescape($keys);
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$keys = [map { my $key = $_; chomp $key; $key } split(/\n/, $keys)];
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$keys = [grep { /\S/ } @$keys];
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$content .= "ssh_authorized_keys:\n";
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foreach my $k (@$keys) {
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$content .= " - $k\n";
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}
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}
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$content .= "chpasswd:\n";
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$content .= " expire: False\n";
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if (!defined($username) || $username ne 'root') {
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$content .= "users:\n";
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$content .= " - default\n";
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}
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$content .= "package_upgrade: true\n";
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return $content;
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}
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sub split_ip4 {
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my ($ip) = @_;
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my ($addr, $mask) = split('/', $ip);
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die "not a CIDR: $ip\n" if !defined $mask;
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return ($addr, $PVE::Network::ipv4_reverse_mask->[$mask]);
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}
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sub configdrive2_network {
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my ($conf) = @_;
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my $content = "auto lo\n";
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$content .= "iface lo inet loopback\n\n";
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my ($searchdomains, $nameservers) = get_dns_conf($conf);
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if ($nameservers && @$nameservers) {
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$nameservers = join(' ', @$nameservers);
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$content .= " dns_nameservers $nameservers\n";
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}
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if ($searchdomains && @$searchdomains) {
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$searchdomains = join(' ', @$searchdomains);
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$content .= " dns_search $searchdomains\n";
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}
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my @ifaces = grep { /^net(\d+)$/ } keys %$conf;
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foreach my $iface (sort @ifaces) {
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(my $id = $iface) =~ s/^net//;
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next if !$conf->{"ipconfig$id"};
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my $net = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
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$id = "eth$id";
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$content .="auto $id\n";
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if ($net->{ip}) {
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if ($net->{ip} eq 'dhcp') {
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$content .= "iface $id inet dhcp\n";
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} else {
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my ($addr, $mask) = split_ip4($net->{ip});
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$content .= "iface $id inet static\n";
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$content .= " address $addr\n";
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$content .= " netmask $mask\n";
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$content .= " gateway $net->{gw}\n" if $net->{gw};
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}
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}
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if ($net->{ip6}) {
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if ($net->{ip6} =~ /^(auto|dhcp)$/) {
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$content .= "iface $id inet6 $1\n";
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} else {
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my ($addr, $mask) = split('/', $net->{ip6});
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$content .= "iface $id inet6 static\n";
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$content .= " address $addr\n";
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$content .= " netmask $mask\n";
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$content .= " gateway $net->{gw6}\n" if $net->{gw6};
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}
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}
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}
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return $content;
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}
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sub configdrive2_gen_metadata {
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my ($user, $network) = @_;
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my $uuid_str = Digest::SHA::sha1_hex($user.$network);
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return configdrive2_metadata($uuid_str);
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}
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sub configdrive2_metadata {
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my ($uuid) = @_;
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return <<"EOF";
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{
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"uuid": "$uuid",
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"network_config": { "content_path": "/content/0000" }
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}
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EOF
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}
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sub generate_configdrive2 {
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my ($conf, $vmid, $drive, $volname, $storeid) = @_;
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my ($user_data, $network_data, $meta_data) = get_custom_cloudinit_files($conf);
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$user_data = cloudinit_userdata($conf, $vmid) if !defined($user_data);
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$network_data = configdrive2_network($conf) if !defined($network_data);
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if (!defined($meta_data)) {
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$meta_data = configdrive2_gen_metadata($user_data, $network_data);
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}
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my $files = {
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'/openstack/latest/user_data' => $user_data,
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'/openstack/content/0000' => $network_data,
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'/openstack/latest/meta_data.json' => $meta_data
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};
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commit_cloudinit_disk($conf, $vmid, $drive, $volname, $storeid, $files, 'config-2');
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}
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sub generate_opennebula {
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my ($conf, $vmid, $drive, $volname, $storeid) = @_;
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my ($hostname, $fqdn) = get_hostname_fqdn($conf, $vmid);
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my $content = "";
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my $username = $conf->{ciuser} || "root";
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my $password = encode_base64($conf->{cipassword}) if defined($conf->{cipassword});
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$content .= "USERNAME=$username\n" if defined($username);
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$content .= "CRYPTED_PASSWORD_BASE64=$password\n" if defined($password);
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if (defined(my $keys = $conf->{sshkeys})) {
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$keys = URI::Escape::uri_unescape($keys);
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$keys = [map { my $key = $_; chomp $key; $key } split(/\n/, $keys)];
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$keys = [grep { /\S/ } @$keys];
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$content .= "SSH_PUBLIC_KEY=\"";
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foreach my $k (@$keys) {
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$content .= "$k\n";
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}
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$content .= "\"\n";
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}
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my ($searchdomains, $nameservers) = get_dns_conf($conf);
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if ($nameservers && @$nameservers) {
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$nameservers = join(' ', @$nameservers);
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$content .= "DNS=\"$nameservers\"\n";
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}
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$content .= "SET_HOSTNAME=$hostname\n";
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if ($searchdomains && @$searchdomains) {
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$searchdomains = join(' ', @$searchdomains);
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$content .= "SEARCH_DOMAIN=\"$searchdomains\"\n";
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}
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my $networkenabled = undef;
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my @ifaces = grep { /^net(\d+)$/ } keys %$conf;
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foreach my $iface (sort @ifaces) {
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(my $id = $iface) =~ s/^net//;
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my $net = PVE::QemuServer::parse_net($conf->{$iface});
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next if !$conf->{"ipconfig$id"};
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my $ipconfig = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
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my $ethid = "ETH$id";
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my $mac = lc $net->{hwaddr};
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if ($ipconfig->{ip}) {
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$networkenabled = 1;
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if ($ipconfig->{ip} eq 'dhcp') {
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$content .= $ethid."_DHCP=YES\n";
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} else {
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my ($addr, $mask) = split_ip4($ipconfig->{ip});
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$content .= $ethid."_IP=$addr\n";
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$content .= $ethid."_MASK=$mask\n";
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$content .= $ethid."_MAC=$mac\n";
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$content .= $ethid."_GATEWAY=$ipconfig->{gw}\n" if $ipconfig->{gw};
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}
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$content .= $ethid."_MTU=$net->{mtu}\n" if $net->{mtu};
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}
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if ($ipconfig->{ip6}) {
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$networkenabled = 1;
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if ($ipconfig->{ip6} eq 'dhcp') {
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$content .= $ethid."_DHCP6=YES\n";
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} elsif ($ipconfig->{ip6} eq 'auto') {
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$content .= $ethid."_AUTO6=YES\n";
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} else {
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my ($addr, $mask) = split('/', $ipconfig->{ip6});
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$content .= $ethid."_IP6=$addr\n";
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$content .= $ethid."_MASK6=$mask\n";
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$content .= $ethid."_MAC6=$mac\n";
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$content .= $ethid."_GATEWAY6=$ipconfig->{gw6}\n" if $ipconfig->{gw6};
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}
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$content .= $ethid."_MTU=$net->{mtu}\n" if $net->{mtu};
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}
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}
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$content .= "NETWORK=YES\n" if $networkenabled;
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my $files = {
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'/context.sh' => $content,
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};
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commit_cloudinit_disk($conf, $vmid, $drive, $volname, $storeid, $files, 'CONTEXT');
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}
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sub nocloud_network_v2 {
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my ($conf) = @_;
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my $content = '';
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my $head = "version: 2\n"
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. "ethernets:\n";
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my $dns_done;
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my @ifaces = grep { /^net(\d+)$/ } keys %$conf;
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foreach my $iface (sort @ifaces) {
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(my $id = $iface) =~ s/^net//;
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next if !$conf->{"ipconfig$id"};
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# indentation - network interfaces are inside an 'ethernets' hash
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my $i = ' ';
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my $net = PVE::QemuServer::parse_net($conf->{$iface});
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my $ipconfig = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
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my $mac = $net->{macaddr}
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or die "network interface '$iface' has no mac address\n";
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$content .= "${i}$iface:\n";
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$i .= ' ';
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$content .= "${i}match:\n"
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. "${i} macaddress: \"$mac\"\n"
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. "${i}set-name: eth$id\n";
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my @addresses;
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if (defined(my $ip = $ipconfig->{ip})) {
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if ($ip eq 'dhcp') {
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$content .= "${i}dhcp4: true\n";
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} else {
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push @addresses, $ip;
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}
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}
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if (defined(my $ip = $ipconfig->{ip6})) {
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if ($ip eq 'dhcp') {
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$content .= "${i}dhcp6: true\n";
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} else {
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push @addresses, $ip;
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}
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}
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if (@addresses) {
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$content .= "${i}addresses:\n";
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$content .= "${i}- '$_'\n" foreach @addresses;
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}
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if (defined(my $gw = $ipconfig->{gw})) {
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$content .= "${i}gateway4: '$gw'\n";
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}
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if (defined(my $gw = $ipconfig->{gw6})) {
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$content .= "${i}gateway6: '$gw'\n";
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}
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next if $dns_done;
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$dns_done = 1;
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my ($searchdomains, $nameservers) = get_dns_conf($conf);
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if ($searchdomains || $nameservers) {
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$content .= "${i}nameservers:\n";
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if (defined($nameservers) && @$nameservers) {
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$content .= "${i} addresses:\n";
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$content .= "${i} - '$_'\n" foreach @$nameservers;
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}
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if (defined($searchdomains) && @$searchdomains) {
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$content .= "${i} search:\n";
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$content .= "${i} - '$_'\n" foreach @$searchdomains;
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}
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}
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}
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return $head.$content;
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}
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sub nocloud_network {
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my ($conf) = @_;
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my $content = "version: 1\n"
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. "config:\n";
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my @ifaces = grep { /^net(\d+)$/ } keys %$conf;
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foreach my $iface (sort @ifaces) {
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(my $id = $iface) =~ s/^net//;
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next if !$conf->{"ipconfig$id"};
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# indentation - network interfaces are inside an 'ethernets' hash
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my $i = ' ';
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my $net = PVE::QemuServer::parse_net($conf->{$iface});
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my $ipconfig = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
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my $mac = lc($net->{macaddr})
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or die "network interface '$iface' has no mac address\n";
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$content .= "${i}- type: physical\n"
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. "${i} name: eth$id\n"
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. "${i} mac_address: '$mac'\n"
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. "${i} subnets:\n";
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$i .= ' ';
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if (defined(my $ip = $ipconfig->{ip})) {
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if ($ip eq 'dhcp') {
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$content .= "${i}- type: dhcp4\n";
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} else {
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my ($addr, $mask) = split_ip4($ip);
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$content .= "${i}- type: static\n"
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. "${i} address: '$addr'\n"
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. "${i} netmask: '$mask'\n";
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if (defined(my $gw = $ipconfig->{gw})) {
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$content .= "${i} gateway: '$gw'\n";
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}
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}
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}
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if (defined(my $ip = $ipconfig->{ip6})) {
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if ($ip eq 'dhcp') {
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$content .= "${i}- type: dhcp6\n";
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} elsif ($ip eq 'auto') {
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# SLAAC is only supported by cloud-init since 19.4
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$content .= "${i}- type: ipv6_slaac\n";
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} else {
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$content .= "${i}- type: static6\n"
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. "${i} address: '$ip'\n";
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if (defined(my $gw = $ipconfig->{gw6})) {
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$content .= "${i} gateway: '$gw'\n";
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}
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}
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}
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}
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my $i = ' ';
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my ($searchdomains, $nameservers) = get_dns_conf($conf);
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if ($searchdomains || $nameservers) {
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$content .= "${i}- type: nameserver\n";
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|
if (defined($nameservers) && @$nameservers) {
|
|
$content .= "${i} address:\n";
|
|
$content .= "${i} - '$_'\n" foreach @$nameservers;
|
|
}
|
|
if (defined($searchdomains) && @$searchdomains) {
|
|
$content .= "${i} search:\n";
|
|
$content .= "${i} - '$_'\n" foreach @$searchdomains;
|
|
}
|
|
}
|
|
|
|
return $content;
|
|
}
|
|
|
|
sub nocloud_metadata {
|
|
my ($uuid) = @_;
|
|
return "instance-id: $uuid\n";
|
|
}
|
|
|
|
sub nocloud_gen_metadata {
|
|
my ($user, $network) = @_;
|
|
|
|
my $uuid_str = Digest::SHA::sha1_hex($user.$network);
|
|
return nocloud_metadata($uuid_str);
|
|
}
|
|
|
|
sub generate_nocloud {
|
|
my ($conf, $vmid, $drive, $volname, $storeid) = @_;
|
|
|
|
my ($user_data, $network_data, $meta_data) = get_custom_cloudinit_files($conf);
|
|
$user_data = cloudinit_userdata($conf, $vmid) if !defined($user_data);
|
|
$network_data = nocloud_network($conf) if !defined($network_data);
|
|
|
|
if (!defined($meta_data)) {
|
|
$meta_data = nocloud_gen_metadata($user_data, $network_data);
|
|
}
|
|
|
|
my $files = {
|
|
'/user-data' => $user_data,
|
|
'/network-config' => $network_data,
|
|
'/meta-data' => $meta_data
|
|
};
|
|
commit_cloudinit_disk($conf, $vmid, $drive, $volname, $storeid, $files, 'cidata');
|
|
}
|
|
|
|
sub get_custom_cloudinit_files {
|
|
my ($conf) = @_;
|
|
|
|
my $cicustom = $conf->{cicustom};
|
|
my $files = $cicustom ? PVE::JSONSchema::parse_property_string('pve-qm-cicustom', $cicustom) : {};
|
|
|
|
my $network_volid = $files->{network};
|
|
my $user_volid = $files->{user};
|
|
my $meta_volid = $files->{meta};
|
|
|
|
my $storage_conf = PVE::Storage::config();
|
|
|
|
my $network_data;
|
|
if ($network_volid) {
|
|
$network_data = read_cloudinit_snippets_file($storage_conf, $network_volid);
|
|
}
|
|
|
|
my $user_data;
|
|
if ($user_volid) {
|
|
$user_data = read_cloudinit_snippets_file($storage_conf, $user_volid);
|
|
}
|
|
|
|
my $meta_data;
|
|
if ($meta_volid) {
|
|
$meta_data = read_cloudinit_snippets_file($storage_conf, $meta_volid);
|
|
}
|
|
|
|
return ($user_data, $network_data, $meta_data);
|
|
}
|
|
|
|
sub read_cloudinit_snippets_file {
|
|
my ($storage_conf, $volid) = @_;
|
|
|
|
my ($full_path, undef, $type) = PVE::Storage::path($storage_conf, $volid);
|
|
die "$volid is not in the snippets directory\n" if $type ne 'snippets';
|
|
return PVE::Tools::file_get_contents($full_path, 1 * 1024 * 1024);
|
|
}
|
|
|
|
my $cloudinit_methods = {
|
|
configdrive2 => \&generate_configdrive2,
|
|
nocloud => \&generate_nocloud,
|
|
opennebula => \&generate_opennebula,
|
|
};
|
|
|
|
sub generate_cloudinitconfig {
|
|
my ($conf, $vmid) = @_;
|
|
|
|
my $format = get_cloudinit_format($conf);
|
|
|
|
PVE::QemuConfig->foreach_volume($conf, sub {
|
|
my ($ds, $drive) = @_;
|
|
|
|
my ($storeid, $volname) = PVE::Storage::parse_volume_id($drive->{file}, 1);
|
|
|
|
return if !$volname || $volname !~ m/vm-$vmid-cloudinit/;
|
|
|
|
my $generator = $cloudinit_methods->{$format}
|
|
or die "missing cloudinit methods for format '$format'\n";
|
|
|
|
$generator->($conf, $vmid, $drive, $volname, $storeid);
|
|
});
|
|
}
|
|
|
|
sub dump_cloudinit_config {
|
|
my ($conf, $vmid, $type) = @_;
|
|
|
|
my $format = get_cloudinit_format($conf);
|
|
|
|
if ($type eq 'user') {
|
|
return cloudinit_userdata($conf, $vmid);
|
|
} elsif ($type eq 'network') {
|
|
if ($format eq 'nocloud') {
|
|
return nocloud_network($conf);
|
|
} else {
|
|
return configdrive2_network($conf);
|
|
}
|
|
} else { # metadata config
|
|
my $user = cloudinit_userdata($conf, $vmid);
|
|
if ($format eq 'nocloud') {
|
|
my $network = nocloud_network($conf);
|
|
return nocloud_gen_metadata($user, $network);
|
|
} else {
|
|
my $network = configdrive2_network($conf);
|
|
return configdrive2_gen_metadata($user, $network);
|
|
}
|
|
}
|
|
}
|
|
|
|
1;
|