qemu-server/PVE/QemuServer/Cloudinit.pm
Mira Limbeck 9680b09d64 fix existing cloudinit volume not available for file_size_info
file_size_info can't find the file if it is not available, e.g.,
RBD storage with KRBD or LVM where the volume was not yet activated,
returns then 0, which we interpret as the disk not existing, thus
call vdisk_alloc which errors as the disk, in fact, really already exists.

With this patch we call activate_volume before trying
file_size_info, so if the volume exists we get it available and else
we can really create it.
If the disk does not exist and is created with vdisk_alloc we still
require an additional call to activate_volume for the new disk.

Signed-off-by: Mira Limbeck <m.limbeck@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2019-05-15 16:31:52 +02:00

476 lines
13 KiB
Perl

package PVE::QemuServer::Cloudinit;
use strict;
use warnings;
use File::Path;
use Digest::SHA;
use URI::Escape;
use PVE::Tools qw(run_command file_set_contents);
use PVE::Storage;
use PVE::QemuServer;
sub commit_cloudinit_disk {
my ($conf, $vmid, $drive, $volname, $storeid, $files, $label) = @_;
my $path = "/run/pve/cloudinit/$vmid/";
mkpath $path;
foreach my $filepath (keys %$files) {
if ($filepath !~ m@^(.*)\/[^/]+$@) {
die "internal error: bad file name in cloud-init image: $filepath\n";
}
my $dirname = $1;
mkpath "$path/$dirname";
my $contents = $files->{$filepath};
file_set_contents("$path/$filepath", $contents);
}
my $storecfg = PVE::Storage::config();
my $iso_path = PVE::Storage::path($storecfg, $drive->{file});
my $scfg = PVE::Storage::storage_config($storecfg, $storeid);
my $format = PVE::QemuServer::qemu_img_format($scfg, $volname);
# required before file_size_info for ceph + krbd as it gets mapped too late otherwise
my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
eval { $plugin->activate_volume($storeid, $scfg, $volname) };
my $size = eval { PVE::Storage::file_size_info($iso_path) };
if ($size <= 0) {
$volname =~ m/(vm-$vmid-cloudinit(.\Q$format\E)?)/;
my $name = $1;
$size = 4 * 1024;
PVE::Storage::vdisk_alloc($storecfg, $storeid, $vmid, $format, $name, $size);
$size *= 1024; # vdisk alloc takes KB, qemu-img dd's osize takes byte
$plugin->activate_volume($storeid, $scfg, $volname);
}
eval {
run_command([['genisoimage', '-R', '-V', $label, $path],
['qemu-img', 'dd', '-n', '-f', 'raw', '-O', $format,
'isize=0', "osize=$size", "of=$iso_path"]]);
};
my $err = $@;
rmtree($path);
die $err if $err;
}
sub get_cloudinit_format {
my ($conf) = @_;
if (defined(my $format = $conf->{citype})) {
return $format;
}
# No format specified, default based on ostype because windows'
# cloudbased-init only supports configdrivev2, whereas on linux we need
# to use mac addresses because regular cloudinit doesn't map 'ethX' to
# the new predicatble network device naming scheme.
if (defined(my $ostype = $conf->{ostype})) {
return 'configdrive2'
if PVE::QemuServer::windows_version($ostype);
}
return 'nocloud';
}
sub get_hostname_fqdn {
my ($conf, $vmid) = @_;
my $hostname = $conf->{name} // "VM$vmid";
my $fqdn;
if ($hostname =~ /\./) {
$fqdn = $hostname;
$hostname =~ s/\..*$//;
} elsif (my $search = $conf->{searchdomain}) {
$fqdn = "$hostname.$search";
}
return ($hostname, $fqdn);
}
sub get_dns_conf {
my ($conf) = @_;
# Same logic as in pve-container, but without the testcase special case
my $host_resolv_conf = PVE::INotify::read_file('resolvconf');
my $searchdomains = [
split(/\s+/, $conf->{searchdomain} // $host_resolv_conf->{search})
];
my $nameserver = $conf->{nameserver};
if (!defined($nameserver)) {
$nameserver = [grep { $_ } $host_resolv_conf->@{qw(dns1 dns2 dns3)}];
} else {
$nameserver = [split(/\s+/, $nameserver)];
}
return ($searchdomains, $nameserver);
}
sub cloudinit_userdata {
my ($conf, $vmid) = @_;
my ($hostname, $fqdn) = get_hostname_fqdn($conf, $vmid);
my $content = "#cloud-config\n";
$content .= "hostname: $hostname\n";
$content .= "manage_etc_hosts: true\n";
$content .= "fqdn: $fqdn\n" if defined($fqdn);
my $username = $conf->{ciuser};
my $password = $conf->{cipassword};
$content .= "user: $username\n" if defined($username);
$content .= "disable_root: False\n" if defined($username) && $username eq 'root';
$content .= "password: $password\n" if defined($password);
if (defined(my $keys = $conf->{sshkeys})) {
$keys = URI::Escape::uri_unescape($keys);
$keys = [map { chomp $_; $_ } split(/\n/, $keys)];
$keys = [grep { /\S/ } @$keys];
$content .= "ssh_authorized_keys:\n";
foreach my $k (@$keys) {
$content .= " - $k\n";
}
}
$content .= "chpasswd:\n";
$content .= " expire: False\n";
if (!defined($username) || $username ne 'root') {
$content .= "users:\n";
$content .= " - default\n";
}
$content .= "package_upgrade: true\n";
return $content;
}
sub split_ip4 {
my ($ip) = @_;
my ($addr, $mask) = split('/', $ip);
die "not a CIDR: $ip\n" if !defined $mask;
return ($addr, $PVE::Network::ipv4_reverse_mask->[$mask]);
}
sub configdrive2_network {
my ($conf) = @_;
my $content = "auto lo\n";
$content .= "iface lo inet loopback\n\n";
my ($searchdomains, $nameservers) = get_dns_conf($conf);
if ($nameservers && @$nameservers) {
$nameservers = join(' ', @$nameservers);
$content .= " dns_nameservers $nameservers\n";
}
if ($searchdomains && @$searchdomains) {
$searchdomains = join(' ', @$searchdomains);
$content .= " dns_search $searchdomains\n";
}
my @ifaces = grep(/^net(\d+)$/, keys %$conf);
foreach my $iface (@ifaces) {
(my $id = $iface) =~ s/^net//;
next if !$conf->{"ipconfig$id"};
my $net = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
$id = "eth$id";
$content .="auto $id\n";
if ($net->{ip}) {
if ($net->{ip} eq 'dhcp') {
$content .= "iface $id inet dhcp\n";
} else {
my ($addr, $mask) = split_ip4($net->{ip});
$content .= "iface $id inet static\n";
$content .= " address $addr\n";
$content .= " netmask $mask\n";
$content .= " gateway $net->{gw}\n" if $net->{gw};
}
}
if ($net->{ip6}) {
if ($net->{ip6} =~ /^(auto|dhcp)$/) {
$content .= "iface $id inet6 $1\n";
} else {
my ($addr, $mask) = split('/', $net->{ip6});
$content .= "iface $id inet6 static\n";
$content .= " address $addr\n";
$content .= " netmask $mask\n";
$content .= " gateway $net->{gw6}\n" if $net->{gw6};
}
}
}
return $content;
}
sub configdrive2_metadata {
my ($uuid) = @_;
return <<"EOF";
{
"uuid": "$uuid",
"network_config": { "content_path": "/content/0000" }
}
EOF
}
sub generate_configdrive2 {
my ($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);
$network_data = configdrive2_network($conf) if !defined($network_data);
if (!defined($meta_data)) {
my $digest_data = $user_data . $network_data;
my $uuid_str = Digest::SHA::sha1_hex($digest_data);
$meta_data = configdrive2_metadata($uuid_str);
}
my $files = {
'/openstack/latest/user_data' => $user_data,
'/openstack/content/0000' => $network_data,
'/openstack/latest/meta_data.json' => $meta_data
};
commit_cloudinit_disk($conf, $vmid, $drive, $volname, $storeid, $files, 'config-2');
}
sub nocloud_network_v2 {
my ($conf) = @_;
my $content = '';
my $head = "version: 2\n"
. "ethernets:\n";
my $dns_done;
my @ifaces = grep(/^net(\d+)$/, keys %$conf);
foreach my $iface (@ifaces) {
(my $id = $iface) =~ s/^net//;
next if !$conf->{"ipconfig$id"};
# indentation - network interfaces are inside an 'ethernets' hash
my $i = ' ';
my $net = PVE::QemuServer::parse_net($conf->{$iface});
my $ipconfig = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
my $mac = $net->{macaddr}
or die "network interface '$iface' has no mac address\n";
$content .= "${i}$iface:\n";
$i .= ' ';
$content .= "${i}match:\n"
. "${i} macaddress: \"$mac\"\n"
. "${i}set-name: eth$id\n";
my @addresses;
if (defined(my $ip = $ipconfig->{ip})) {
if ($ip eq 'dhcp') {
$content .= "${i}dhcp4: true\n";
} else {
push @addresses, $ip;
}
}
if (defined(my $ip = $ipconfig->{ip6})) {
if ($ip eq 'dhcp') {
$content .= "${i}dhcp6: true\n";
} else {
push @addresses, $ip;
}
}
if (@addresses) {
$content .= "${i}addresses:\n";
$content .= "${i}- '$_'\n" foreach @addresses;
}
if (defined(my $gw = $ipconfig->{gw})) {
$content .= "${i}gateway4: '$gw'\n";
}
if (defined(my $gw = $ipconfig->{gw6})) {
$content .= "${i}gateway6: '$gw'\n";
}
next if $dns_done;
$dns_done = 1;
my ($searchdomains, $nameservers) = get_dns_conf($conf);
if ($searchdomains || $nameservers) {
$content .= "${i}nameservers:\n";
if (defined($nameservers) && @$nameservers) {
$content .= "${i} addresses:\n";
$content .= "${i} - '$_'\n" foreach @$nameservers;
}
if (defined($searchdomains) && @$searchdomains) {
$content .= "${i} search:\n";
$content .= "${i} - '$_'\n" foreach @$searchdomains;
}
}
}
return $head.$content;
}
sub nocloud_network {
my ($conf) = @_;
my $content = "version: 1\n"
. "config:\n";
my @ifaces = grep(/^net(\d+)$/, keys %$conf);
foreach my $iface (@ifaces) {
(my $id = $iface) =~ s/^net//;
next if !$conf->{"ipconfig$id"};
# indentation - network interfaces are inside an 'ethernets' hash
my $i = ' ';
my $net = PVE::QemuServer::parse_net($conf->{$iface});
my $ipconfig = PVE::QemuServer::parse_ipconfig($conf->{"ipconfig$id"});
my $mac = lc($net->{macaddr})
or die "network interface '$iface' has no mac address\n";
$content .= "${i}- type: physical\n"
. "${i} name: eth$id\n"
. "${i} mac_address: '$mac'\n"
. "${i} subnets:\n";
$i .= ' ';
if (defined(my $ip = $ipconfig->{ip})) {
if ($ip eq 'dhcp') {
$content .= "${i}- type: dhcp4\n";
} else {
my ($addr, $mask) = split_ip4($ip);
$content .= "${i}- type: static\n"
. "${i} address: '$addr'\n"
. "${i} netmask: '$mask'\n";
if (defined(my $gw = $ipconfig->{gw})) {
$content .= "${i} gateway: '$gw'\n";
}
}
}
if (defined(my $ip = $ipconfig->{ip6})) {
if ($ip eq 'dhcp') {
$content .= "${i}- type: dhcp6\n";
} elsif ($ip eq 'auto') {
# SLAAC is not supported by cloud-init, this fallback should work with an up-to-date netplan at least
$content .= "${i}- type: dhcp6\n";
} else {
$content .= "${i}- type: static\n"
. "${i} address: '$ip'\n";
if (defined(my $gw = $ipconfig->{gw6})) {
$content .= "${i} gateway: '$gw'\n";
}
}
}
}
my $i = ' ';
my ($searchdomains, $nameservers) = get_dns_conf($conf);
if ($searchdomains || $nameservers) {
$content .= "${i}- type: nameserver\n";
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: $uuid\n";
}
sub generate_nocloud {
my ($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)) {
my $digest_data = $user_data . $network_data;
my $uuid_str = Digest::SHA::sha1_hex($digest_data);
$meta_data = nocloud_metadata($uuid_str);
}
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 $cloudinit_methods = {
configdrive2 => \&generate_configdrive2,
nocloud => \&generate_nocloud,
};
sub generate_cloudinitconfig {
my ($conf, $vmid) = @_;
my $format = get_cloudinit_format($conf);
PVE::QemuServer::foreach_drive($conf, sub {
my ($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);
});
}
1;