mirror of
git://git.proxmox.com/git/qemu-server.git
synced 2025-02-15 05:57:39 +03:00
cloud-init: nocloud image support
With configdrives we end up with the /etc/network/interfaces file containing the interface names we use on the disk, ie. eth0/eth1/..., which doesn't work on systems which do not use this name. With the 'nocloud' image type we can provide a network-config in yaml which matches mac addresses. Ideally we'd use version 2, but debian stretch ships with a too old cloud-init for this, so for now we're writing version 1. Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Wolfgang Bumiller
parent
931432bd2d
commit
41cd94a01e
@ -540,6 +540,12 @@ EODESCR
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};
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my $confdesc_cloudinit = {
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citype => {
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optional => 1,
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type => 'string',
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description => 'Specifies the cloud-init configuration format.',
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enum => ['configdrive2', 'nocloud'],
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},
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searchdomain => {
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optional => 1,
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type => 'string',
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@ -12,104 +12,89 @@ use PVE::Storage;
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use PVE::QemuServer;
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sub commit_cloudinit_disk {
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my ($file_path, $iso_path, $format) = @_;
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my ($conf, $drive, $volname, $storeid, $file_path, $label) = @_;
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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 $size = PVE::Storage::file_size_info($iso_path);
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run_command([['genisoimage', '-R', '-V', 'config-2', $file_path],
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run_command([['genisoimage', '-R', '-V', $label, $file_path],
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['qemu-img', 'dd', '-f', 'raw', '-O', $format,
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'isize=0', "osize=$size", "of=$iso_path"]]);
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}
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sub generate_cloudinitconfig {
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my ($conf, $vmid) = @_;
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sub get_cloudinit_format {
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my ($conf) = @_;
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if (defined(my $format = $conf->{citype})) {
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return $format;
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}
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PVE::QemuServer::foreach_drive($conf, sub {
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my ($ds, $drive) = @_;
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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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my ($storeid, $volname) = PVE::Storage::parse_volume_id($drive->{file}, 1);
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return if !$volname || $volname !~ m/vm-$vmid-cloudinit/;
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my $path = "/tmp/cloudinit/$vmid";
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mkdir "/tmp/cloudinit";
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mkdir $path;
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mkdir "$path/drive";
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mkdir "$path/drive/openstack";
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mkdir "$path/drive/openstack/latest";
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mkdir "$path/drive/openstack/content";
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my $digest_data = generate_cloudinit_userdata($conf, $path)
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. generate_cloudinit_network($conf, $path);
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generate_cloudinit_metadata($conf, $path, $digest_data);
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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, $volname);
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#fixme : add meta as drive property to compare
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commit_cloudinit_disk("$path/drive", $iso_path, $format);
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rmtree("$path/drive");
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});
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return 'nocloud';
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}
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sub generate_cloudinit_userdata {
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my ($conf, $path) = @_;
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my $content = "#cloud-config\n";
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my $hostname = $conf->{hostname};
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if (!defined($hostname)) {
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$hostname = $conf->{name};
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sub get_fqdn {
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my ($conf) = @_;
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my $fqdn = $conf->{hostname};
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if (!defined($fqdn)) {
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$fqdn = $conf->{name};
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if (my $search = $conf->{searchdomain}) {
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$hostname .= ".$search";
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$fqdn .= ".$search";
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}
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}
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$content .= "fqdn: $hostname\n";
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$content .= "manage_etc_hosts: true\n";
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$content .= "bootcmd: \n";
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$content .= " - ifdown -a\n";
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$content .= " - ifup -a\n";
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return $fqdn;
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}
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my $keys = $conf->{sshkeys};
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if ($keys) {
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sub cloudinit_userdata {
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my ($conf) = @_;
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my $fqdn = get_fqdn($conf);
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my $content = <<"EOF";
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#cloud-config
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manage_resolv_conf: true
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EOF
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my $username = 'blub';
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my $encpw = PVE::Tools::encrypt_pw('foo');
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$content .= "user: $username\n" if defined($username);
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$content .= "password: $encpw\n" if defined($encpw);
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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 { chomp $_; $_ } split(/\n/, $keys)];
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$keys = [grep { /\S/ } @$keys];
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$content .= "users:\n";
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$content .= " - default\n";
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$content .= " - name: root\n";
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$content .= " ssh-authorized-keys:\n";
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$content .= "ssh_authorized_keys:\n";
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foreach my $k (@$keys) {
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$content .= " - $k\n";
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$content .= " - $k\n";
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}
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}
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$content .= "chpasswd:\n";
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$content .= " expire: False\n";
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# FIXME: we probably need an option to disable this?
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$content .= "users:\n";
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$content .= " - default\n";
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$content .= "package_upgrade: true\n";
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my $fn = "$path/drive/openstack/latest/user_data";
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file_set_contents($fn, $content);
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return $content;
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}
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sub generate_cloudinit_metadata {
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my ($conf, $path, $digest_data) = @_;
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my $uuid_str = Digest::SHA::sha1_hex($digest_data);
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my $content = "{\n";
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$content .= " \"uuid\": \"$uuid_str\",\n";
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$content .= " \"network_config\" :{ \"content_path\": \"/content/0000\"}\n";
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$content .= "}\n";
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my $fn = "$path/drive/openstack/latest/meta_data.json";
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file_set_contents($fn, $content);
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}
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sub generate_cloudinit_network {
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my ($conf, $path) = @_;
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sub configdrive2_network {
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my ($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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@ -118,7 +103,7 @@ sub generate_cloudinit_network {
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foreach my $iface (@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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my $net = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
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$id = "eth$id";
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$content .="auto $id\n";
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@ -149,10 +134,250 @@ sub generate_cloudinit_network {
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$content .=" dns_nameservers $conf->{nameserver}\n" if $conf->{nameserver};
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$content .=" dns_search $conf->{searchdomain}\n" if $conf->{searchdomain};
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my $fn = "$path/drive/openstack/content/0000";
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file_set_contents($fn, $content);
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return $content;
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}
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sub configdrive2_metadata {
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my ($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 $user_data = cloudinit_userdata($conf);
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my $network_data = configdrive2_network($conf);
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my $digest_data = $user_data . $network_data;
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my $uuid_str = Digest::SHA::sha1_hex($digest_data);
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my $meta_data = configdrive2_metadata($uuid_str);
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mkdir "/tmp/cloudinit";
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my $path = "/tmp/cloudinit/$vmid";
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mkdir $path;
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mkdir "$path/drive";
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mkdir "$path/drive/openstack";
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mkdir "$path/drive/openstack/latest";
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mkdir "$path/drive/openstack/content";
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file_set_contents("$path/drive/openstack/latest/user_data", $user_data);
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file_set_contents("$path/drive/openstack/content/0000", $network_data);
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file_set_contents("$path/drive/openstack/latest/meta_data.json", $meta_data);
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commit_cloudinit_disk($conf, $drive, $volname, $storeid, "$path/drive", 'config-2');
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rmtree("$path/drive");
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}
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sub nocloud_network_v2 {
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my ($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 $nameservers_done;
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my @ifaces = grep(/^net(\d+)$/, keys %$conf);
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foreach my $iface (@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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my $data = "${i}$iface:\n";
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$i .= ' ';
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$data .= "${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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$data .= "${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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$data .= "${i}dhcp6: true\n";
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} else {
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push @addresses, $ip;
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}
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}
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if (@addresses) {
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$data .= "${i}addresses:\n";
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$data .= "${i}- $_\n" foreach @addresses;
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}
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if (defined(my $gw = $ipconfig->{gw})) {
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$data .= "${i}gateway4: $gw\n";
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}
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if (defined(my $gw = $ipconfig->{gw6})) {
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$data .= "${i}gateway6: $gw\n";
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}
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if (!$nameservers_done) {
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$nameservers_done = 1;
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my $nameserver = $conf->{nameserver} // '';
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my $searchdomain = $conf->{searchdomain} // '';
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my @nameservers = PVE::Tools::split_list($nameserver);
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my @searchdomains = PVE::Tools::split_list($searchdomain);
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if (@nameservers || @searchdomains) {
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$data .= "${i}nameservers:\n";
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$data .= "${i} addresses: [".join(',', @nameservers)."]\n"
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if @nameservers;
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$data .= "${i} search: [".join(',', @searchdomains)."]\n"
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if @searchdomains;
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}
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}
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$content .= $data;
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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 (@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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my $data = "${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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$data .= "${i}- type: dhcp4\n";
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} else {
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$data .= "${i}- type: static\n"
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. "${i} address: $ip\n";
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if (defined(my $gw = $ipconfig->{gw})) {
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$data .= "${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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$data .= "${i}- type: dhcp6\n";
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} else {
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$data .= "${i}- type: static6\n"
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. "${i} address: $ip\n";
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if (defined(my $gw = $ipconfig->{gw6})) {
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$data .= "${i} gateway: $gw\n";
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}
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}
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}
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$content .= $data;
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}
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my $nameserver = $conf->{nameserver} // '';
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my $searchdomain = $conf->{searchdomain} // '';
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my @nameservers = PVE::Tools::split_list($nameserver);
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my @searchdomains = PVE::Tools::split_list($searchdomain);
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if (@nameservers || @searchdomains) {
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my $i = ' ';
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$content .= "${i}- type: nameserver\n";
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if (@nameservers) {
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$content .= "${i} address:\n";
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$content .= "${i} - $_\n" foreach @nameservers;
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}
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if (@searchdomains) {
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$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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return $content;
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}
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sub nocloud_metadata {
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my ($uuid, $hostname) = @_;
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return <<"EOF";
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instance-id: $uuid
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local-hostname: $hostname
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EOF
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}
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sub generate_nocloud {
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my ($conf, $vmid, $drive, $volname, $storeid) = @_;
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my $hostname = $conf->{hostname} // '';
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my $user_data = cloudinit_userdata($conf);
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my $network_data = nocloud_network($conf);
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my $digest_data = $user_data . $network_data . "local-hostname: $hostname\n";
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my $uuid_str = Digest::SHA::sha1_hex($digest_data);
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my $meta_data = nocloud_metadata($uuid_str, $hostname);
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mkdir "/tmp/cloudinit";
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my $path = "/tmp/cloudinit/$vmid";
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mkdir $path;
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rmtree("$path/drive");
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mkdir "$path/drive";
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file_set_contents("$path/drive/user-data", $user_data);
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file_set_contents("$path/drive/network-config", $network_data);
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file_set_contents("$path/drive/meta-data", $meta_data);
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commit_cloudinit_disk($conf, $drive, $volname, $storeid, "$path/drive", 'cidata');
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}
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my $cloudinit_methods = {
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configdrive2 => \&generate_configdrive2,
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nocloud => \&generate_nocloud,
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};
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sub generate_cloudinitconfig {
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my ($conf, $vmid) = @_;
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my $format = get_cloudinit_format($conf);
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PVE::QemuServer::foreach_drive($conf, sub {
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my ($ds, $drive) = @_;
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my ($storeid, $volname) = PVE::Storage::parse_volume_id($drive->{file}, 1);
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return if !$volname || $volname !~ m/vm-$vmid-cloudinit/;
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my $generator = $cloudinit_methods->{$format}
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or die "missing cloudinit methods for format '$format'\n";
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$generator->($conf, $vmid, $drive, $volname, $storeid);
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});
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}
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1;
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