01d68774a2
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@16878 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
672 lines
21 KiB
Perl
672 lines
21 KiB
Perl
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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package xCAT_plugin::pxe;
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use Data::Dumper;
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use Sys::Syslog;
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use xCAT::Scope;
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use xCAT::MsgUtils;
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use Socket;
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use File::Copy;
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use File::Path;
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use Getopt::Long;
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require xCAT::Utils;
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require xCAT::TableUtils;
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my $addkcmdlinehandled;
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my $request;
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my $callback;
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my $dhcpconf = "/etc/dhcpd.conf";
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my $globaltftpdir = xCAT::TableUtils->getTftpDir();
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#my $dhcpver = 3;
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my %usage = (
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"nodeset" => "Usage: nodeset <noderange> [install|shell|boot|runcmd=bmcsetup|netboot|iscsiboot|osimage[=<imagename>]|statelite|offline]",
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);
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sub handled_commands {
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return {
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nodeset => "noderes:netboot"
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}
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}
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sub check_dhcp {
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return 1;
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#TODO: omapi magic to do things right
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my $node = shift;
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my $dhcpfile;
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open ($dhcpfile,$dhcpconf);
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while (<$dhcpfile>) {
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if (/host $node\b/) {
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close $dhcpfile;
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return 1;
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}
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}
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close $dhcpfile;
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return 0;
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}
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sub _slow_get_tftpdir { #make up for paths where tftpdir is not passed in
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my $node = shift;
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my $nrtab = xCAT::Table->new('noderes',-create=>0); #in order to detect per-node tftp directories
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unless ($nrtab) { return $globaltftpdir; }
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my $ent = $nrtab->getNodeAttribs($node,["tftpdir"]);
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if ($ent and $ent->{tftpdir}) {
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return $ent->{tftpdir};
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} else {
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return $globaltftpdir;
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}
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}
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sub getstate {
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my $node = shift;
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my $tftpdir = shift;
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unless ($tftpdir) { $tftpdir = _slow_get_tftpdir($node); }
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if (check_dhcp($node)) {
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if (-r $tftpdir . "/pxelinux.cfg/".$node) {
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my $fhand;
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open ($fhand,$tftpdir . "/pxelinux.cfg/".$node);
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my $headline = <$fhand>;
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close $fhand;
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$headline =~ s/^#//;
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chomp($headline);
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return $headline;
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} else {
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return "boot";
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}
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} else {
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return "discover";
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}
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}
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sub setstate {
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=pod
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This function will manipulate the pxelinux.cfg structure to match what the noderes/chain tables indicate the node should be booting.
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=cut
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my $node = shift;
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my %bphash = %{shift()};
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my %chainhash = %{shift()};
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my %machash = %{shift()};
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my %nthash = %{shift()};
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my $tftpdir = shift;
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my %linuximghash = ();
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my $linuximghashref = shift;
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if (ref $linuximghashref) { %linuximghash = %{$linuximghashref}; }
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my $imgaddkcmdline=($linuximghash{'boottarget'})? undef:$linuximghash{'addkcmdline'};
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my $kern = $bphash{$node}->[0]; #$bptab->getNodeAttribs($node,['kernel','initrd','kcmdline']);
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if (not $addkcmdlinehandled->{$node} and ($kern->{addkcmdline} or ($imgaddkcmdline))) {
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#Implement the kcmdline append here for
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#most generic, least code duplication
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###hack start
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# This is my comment. There are many others like it, but this one is mine.
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# My comment is my best friend. It is my life. I must master it as I must master my life.
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# Without me, my comment is useless. Without my comment, I am useless.
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# Jarrod to clean up. It really should be in Table.pm and support
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# the new statelite $table notation.
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#I dislike spaces, tabs are cleaner, I'm too tired to change all the xCAT code.
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#I give in.
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my $kcmdlinehack = ($imgaddkcmdline)?$kern->{addkcmdline}." ".$imgaddkcmdline : $kern->{addkcmdline};
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while ($kcmdlinehack =~ /#NODEATTRIB:([^:#]+):([^:#]+)#/) {
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my $natab = xCAT::Table->new($1);
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my $naent = $natab->getNodeAttribs($node,[$2]);
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my $naval = $naent->{$2};
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$kcmdlinehack =~ s/#NODEATTRIB:([^:#]+):([^:#]+)#/$naval/;
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}
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while ($kcmdlinehack =~ /#TABLE:([^:#]+):([^:#]+):([^:#]+)#/) {
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my $tabname = $1;
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my $keyname = $2;
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my $colname = $3;
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if ($2 =~ /THISNODE/ or $2 =~ /\$NODE/) {
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my $natab = xCAT::Table->new($tabname);
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my $naent = $natab->getNodeAttribs($node,[$colname]);
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my $naval = $naent->{$colname};
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$kcmdlinehack =~ s/#TABLE:([^:#]+):([^:#]+):([^:#]+)#/$naval/;
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} else {
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my $msg = "Table key of $2 not yet supported by boottarget mini-template";
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$callback->({
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error => ["$msg"],
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errorcode => [1]
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});
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}
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}
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#$kern->{kcmdline} .= " ".$kern->{addkcmdline};
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$kern->{kcmdline} .= " ".$kcmdlinehack;
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###hack end
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}
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if ($kern->{kcmdline} =~ /!myipfn!/) {
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my $ipfn = xCAT::NetworkUtils->my_ip_facing($node);
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unless ($ipfn) {
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my @myself = xCAT::NetworkUtils->determinehostname();
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my $myname = $myself[(scalar @myself)-1];
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$callback->(
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{
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error => [
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"$myname: Unable to determine or reasonably guess the image server for $node"
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],
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errorcode => [1]
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}
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);
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}
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$kern->{kcmdline} =~ s/!myipfn!/$ipfn/g;
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}
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my $pcfg;
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unless (-d $tftpdir."/pxelinux.cfg/") {
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mkpath($tftpdir."/pxelinux.cfg/");
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}
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open($pcfg,'>',$tftpdir."/pxelinux.cfg/".$node);
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my $cref=$chainhash{$node}->[0]; #$chaintab->getNodeAttribs($node,['currstate']);
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if ($cref->{currstate}) {
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print $pcfg "#".$cref->{currstate}."\n";
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}
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print $pcfg "DEFAULT xCAT\n";
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print $pcfg "LABEL xCAT\n";
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if ($cref and $cref->{currstate} eq "boot") {
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print $pcfg "LOCALBOOT 0\n";
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close($pcfg);
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} elsif ($kern and $kern->{kernel}) {
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if ($kern->{kernel} =~ /!/) {
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my $hypervisor;
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my $kernel;
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($kernel,$hypervisor) = split /!/,$kern->{kernel};
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print $pcfg " KERNEL mboot.c32\n";
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print $pcfg " APPEND $hypervisor --- $kernel ".$kern->{kcmdline}." --- ".$kern->{initrd}."\n";
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} else {
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#It's time to set pxelinux for this node to boot the kernel..
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print $pcfg " KERNEL ".$kern->{kernel}."\n";
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if ($kern->{initrd} or $kern->{kcmdline}) {
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print $pcfg " APPEND ";
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}
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if ($kern and $kern->{initrd}) {
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print $pcfg "initrd=".$kern->{initrd}." ";
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}
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if ($kern and $kern->{kcmdline}) {
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print $pcfg $kern->{kcmdline}."\n";
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} else {
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print $pcfg "\n";
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}
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# add the IPAPPEND flag
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my $os = $nthash{$node}->[0]->{os};
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if ($os !~ /fedora12|fedora13/) {
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print $pcfg " IPAPPEND 2\n";
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}
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}
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close($pcfg);
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my $inetn = inet_aton($node);
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unless ($inetn) {
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syslog("local1|err","xCAT unable to resolve IP for $node in pxe plugin");
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return;
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}
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} else { #TODO: actually, should possibly default to xCAT image?
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print $pcfg "LOCALBOOT 0\n";
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close($pcfg);
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}
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my $mactab = xCAT::Table->new('mac'); #to get all the hostnames
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my %ipaddrs;
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unless (inet_aton($node)) {
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syslog("local1|err","xCAT unable to resolve IP in pxe plugin");
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return;
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}
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my $ip = inet_ntoa(inet_aton($node));;
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unless ($ip) {
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syslog("local1|err","xCAT unable to resolve IP in pxe plugin");
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return;
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}
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$ipaddrs{$ip} = 1;
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if ($mactab) {
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my $ment = $machash{$node}->[0]; #$mactab->getNodeAttribs($node,['mac']);
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if ($ment and $ment->{mac}) {
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my @macs = split(/\|/,$ment->{mac});
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foreach (@macs) {
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if (/!(.*)/) {
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if (inet_aton($1)) {
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$ipaddrs{inet_ntoa(inet_aton($1))} = 1;
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}
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}
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}
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}
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}
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my $hassymlink = eval { symlink("",""); 1 };
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foreach $ip (keys %ipaddrs) {
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my @ipa=split(/\./,$ip);
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my $pname = sprintf("%02X%02X%02X%02X",@ipa);
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unlink($tftpdir."/pxelinux.cfg/".$pname);
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if ($hassymlink) {
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symlink($node,$tftpdir."/pxelinux.cfg/".$pname);
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} else {
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link($tftpdir."/pxelinux.cfg/".$node,$tftpdir."/pxelinux.cfg/".$pname);
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}
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}
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}
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my $errored = 0;
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sub pass_along {
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my $resp = shift;
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if ($resp and ($resp->{errorcode} and $resp->{errorcode}->[0]) or ($resp->{error} and $resp->{error}->[0])) {
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$errored=1;
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}
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foreach (@{$resp->{node}}) {
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if ($_->{error} or $_->{errorcode}) {
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$errored=1;
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}
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if ($_->{_addkcmdlinehandled}) {
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$addkcmdlinehandled->{$_->{name}->[0]}=1;
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return; #Don't send back to client this internal hint
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}
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}
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$callback->($resp);
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}
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sub preprocess_request {
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#Assume shared tftp directory for boring people, but for cool people, help sync up tftpdirectory contents when
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#they specify no sharedtftp in site table
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#my $stab = xCAT::Table->new('site');
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my $req = shift;
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my $callback1 = shift;
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my $command = $req->{command}->[0];
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my $sub_req = shift;
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my @args=();
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if (ref($req->{arg})) {
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@args=@{$req->{arg}};
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} else {
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@args=($req->{arg});
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}
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@ARGV = @args;
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Getopt::Long::Configure("bundling");
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Getopt::Long::Configure("pass_through");
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if (!GetOptions('h|?|help' => \$HELP, 'v|version' => \$VERSION) ) {
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if($usage{$command}) {
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my %rsp;
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$rsp{data}->[0]=$usage{$command};
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$callback1->(\%rsp);
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}
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return;
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}
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if ($HELP) {
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if($usage{$command}) {
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my %rsp;
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$rsp{data}->[0]=$usage{$command};
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$callback1->(\%rsp);
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}
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return;
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}
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if ($VERSION) {
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my $ver = xCAT::Utils->Version();
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my %rsp;
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$rsp{data}->[0]="$ver";
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$callback1->(\%rsp);
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return;
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}
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if (@ARGV==0) {
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if($usage{$command}) {
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my %rsp;
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$rsp{data}->[0]=$usage{$command};
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$callback1->(\%rsp);
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}
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return;
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}
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#my $sent = $stab->getAttribs({key=>'sharedtftp'},'value');
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my @entries = xCAT::TableUtils->get_site_attribute("sharedtftp");
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my $t_entry = $entries[0];
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if ( defined($t_entry) and ($t_entry == 0 or $t_entry =~ /no/i)) {
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$req->{'_disparatetftp'}=[1];
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if ($req->{inittime}->[0]) {
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return [$req];
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}
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return xCAT::Scope->get_broadcast_scope($req,@_);
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}
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return [$req];
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}
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#sub preprocess_request {
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# my $req = shift;
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# $callback = shift;
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# if ($req->{_xcatdest}) { return [$req]; } #Exit if the packet has been preprocessed in its history
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# my @requests = ({%$req}); #Start with a straight copy to reflect local instance
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# my $sitetab = xCAT::Table->new('site');
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# (my $ent) = $sitetab->getAttribs({key=>'xcatservers'},'value');
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# $sitetab->close;
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# if ($ent and $ent->{value}) {
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# foreach (split /,/,$ent->{value}) {
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# if (xCAT::NetworkUtils->thishostisnot($_)) {
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# my $reqcopy = {%$req};
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# $reqcopy->{'_xcatdest'} = $_;
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# push @requests,$reqcopy;
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# }
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# }
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# }
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# return \@requests;
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#}
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#sub preprocess_request {
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# my $req = shift;
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# my $callback = shift;
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# my %localnodehash;
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# my %dispatchhash;
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# my $nrtab = xCAT::Table->new('noderes');
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# foreach my $node (@{$req->{node}}) {
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# my $nodeserver;
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# my $tent = $nrtab->getNodeAttribs($node,['tftpserver']);
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# if ($tent) { $nodeserver = $tent->{tftpserver} }
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# unless ($tent and $tent->{tftpserver}) {
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# $tent = $nrtab->getNodeAttribs($node,['servicenode']);
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# if ($tent) { $nodeserver = $tent->{servicenode} }
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# }
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# if ($nodeserver) {
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# $dispatchhash{$nodeserver}->{$node} = 1;
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# } else {
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# $localnodehash{$node} = 1;
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# }
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# }
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# my @requests;
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# my $reqc = {%$req};
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# $reqc->{node} = [ keys %localnodehash ];
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# if (scalar(@{$reqc->{node}})) { push @requests,$reqc }
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#
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# foreach my $dtarg (keys %dispatchhash) { #iterate dispatch targets
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# my $reqcopy = {%$req}; #deep copy
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# $reqcopy->{'_xcatdest'} = $dtarg;
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# $reqcopy->{node} = [ keys %{$dispatchhash{$dtarg}}];
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# push @requests,$reqcopy;
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# }
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# return \@requests;
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#}
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sub process_request {
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$request = shift;
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$callback = shift;
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my $sub_req = shift;
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my @args;
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my @nodes;
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my @rnodes;
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if (ref($request->{node})) {
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@rnodes = @{$request->{node}};
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} else {
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if ($request->{node}) { @rnodes = ($request->{node}); }
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}
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unless (@rnodes) {
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if ($usage{$request->{command}->[0]}) {
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$callback->({data=>$usage{$request->{command}->[0]}});
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}
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return;
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}
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#if not shared, then help sync up
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if ($request->{'_disparatetftp'}->[0]) { #reading hint from preprocess_command
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@nodes = ();
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foreach (@rnodes) {
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if (xCAT::NetworkUtils->nodeonmynet($_)) {
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push @nodes,$_;
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} else {
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xCAT::MsgUtils->message("S", "$_: pxe netboot: stop configuration because of none sharedtftp and not on same network with its xcatmaster.");
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}
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}
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} else {
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@nodes = @rnodes;
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}
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# return directly if no nodes in the same network
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unless (@nodes) {
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xCAT::MsgUtils->message("S", "xCAT: pxe netboot: no valid nodes. Stop the operation on this server.");
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return;
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}
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if (ref($request->{arg})) {
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@args=@{$request->{arg}};
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} else {
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@args=($request->{arg});
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}
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#now run the begin part of the prescripts
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unless ($args[0] eq 'stat') { # or $args[0] eq 'enact') {
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$errored=0;
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if ($request->{'_disparatetftp'}->[0]) { #the call is distrubuted to the service node already, so only need to handles my own children
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$sub_req->({command=>['runbeginpre'],
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node=>\@nodes,
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arg=>[$args[0], '-l']},\&pass_along);
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} else { #nodeset did not distribute to the service node, here we need to let runednpre to distribute the nodes to their masters
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$sub_req->({command=>['runbeginpre'],
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node=>\@rnodes,
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arg=>[$args[0]]},\&pass_along);
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}
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if ($errored) {
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my $rsp;
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$rsp->{errorcode}->[0]=1;
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$rsp->{error}->[0]="Failed in running begin prescripts\n";
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$callback->($rsp);
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return;
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}
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}
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#end prescripts code
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if (! -r "$tftpdir/pxelinux.0") {
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unless (-r "/usr/lib/syslinux/pxelinux.0" or -r "/usr/share/syslinux/pxelinux.0") {
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$callback->({error=>["Unable to find pxelinux.0 "],errorcode=>[1]});
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return;
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}
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if (-r "/usr/lib/syslinux/pxelinux.0") {
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copy("/usr/lib/syslinux/pxelinux.0","$tftpdir/pxelinux.0");
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} else {
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copy("/usr/share/syslinux/pxelinux.0","$tftpdir/pxelinux.0");
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}
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chmod(0644,"$tftpdir/pxelinux.0");
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}
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unless ( -r "$tftpdir/pxelinux.0" ) {
|
|
$callback->({errror=>["Unable to find pxelinux.0 from syslinux"],errorcode=>[1]});
|
|
return;
|
|
}
|
|
|
|
|
|
$errored=0;
|
|
my $inittime=0;
|
|
if (exists($request->{inittime})) { $inittime= $request->{inittime}->[0];}
|
|
if (!$inittime) { $inittime=0;}
|
|
unless ($args[0] eq 'stat') { # or $args[0] eq 'enact') {
|
|
$sub_req->({command=>['setdestiny'],
|
|
node=>\@nodes,
|
|
inittime=>[$inittime],
|
|
arg=>\@args},\&pass_along);
|
|
}
|
|
if ($errored) { return; }
|
|
#Time to actually configure the nodes, first extract database data with the scalable calls
|
|
my $bptab = xCAT::Table->new('bootparams',-create=>1);
|
|
my $chaintab = xCAT::Table->new('chain');
|
|
my $mactab = xCAT::Table->new('mac'); #to get all the hostnames
|
|
my $typetab = xCAT::Table->new('nodetype');
|
|
my $restab = xCAT::Table->new('noderes');
|
|
my $linuximgtab=xCAT::Table->new('linuximage',-create=>1);
|
|
my %nrhash = %{$restab->getNodesAttribs(\@nodes,[qw(tftpdir)])};
|
|
my %bphash = %{$bptab->getNodesAttribs(\@nodes,[qw(kernel initrd kcmdline addkcmdline)])};
|
|
my %chainhash = %{$chaintab->getNodesAttribs(\@nodes,[qw(currstate)])};
|
|
my %machash = %{$mactab->getNodesAttribs(\@nodes,[qw(mac)])};
|
|
my %nthash = %{$typetab->getNodesAttribs(\@nodes,[qw(os provmethod)])};
|
|
foreach (@nodes) {
|
|
my %response;
|
|
my $tftpdir;
|
|
if ($nrhash{$_} and $nrhash{$_}->[0] and $nrhash{$_}->[0]->{tftpdir}) {
|
|
$tftpdir = $nrhash{$_}->[0]->{tftpdir};
|
|
} else {
|
|
$tftpdir = $globaltftpdir;
|
|
}
|
|
$response{node}->[0]->{name}->[0]=$_;
|
|
if ($args[0] eq 'stat') {
|
|
$response{node}->[0]->{data}->[0]= getstate($_,$tftpdir);
|
|
$callback->(\%response);
|
|
} elsif ($args[0]) { #If anything else, send it on to the destiny plugin, then setstate
|
|
my $ent = $nthash{$_}->[0];
|
|
my $osimgname = $ent->{'provmethod'};
|
|
my $linuximghash=undef;
|
|
unless($osimgname =~ /^(install|netboot|statelite)$/){
|
|
$linuximghash = $linuximgtab->getAttribs({imagename => $osimgname}, 'boottarget', 'addkcmdline');
|
|
}
|
|
($rc,$errstr) = setstate($_,\%bphash,\%chainhash,\%machash,\%nthash,$tftpdir,$linuximghash);
|
|
if ($rc) {
|
|
$response{node}->[0]->{errorcode}->[0]= $rc;
|
|
$response{node}->[0]->{errorc}->[0]= $errstr;
|
|
$callback->(\%response);
|
|
}
|
|
}
|
|
}
|
|
|
|
my $inittime=0;
|
|
if (exists($request->{inittime})) { $inittime= $request->{inittime}->[0];}
|
|
if (!$inittime) { $inittime=0;}
|
|
|
|
#dhcp stuff -- inittime is set when xcatd on sn is started
|
|
unless (($args[0] eq 'stat') || ($inittime) || ($args[0] eq 'offline')) {
|
|
my $do_dhcpsetup=1;
|
|
#my $sitetab = xCAT::Table->new('site');
|
|
#if ($sitetab) {
|
|
#(my $ref) = $sitetab->getAttribs({key => 'dhcpsetup'}, 'value');
|
|
my @entries = xCAT::TableUtils->get_site_attribute("dhcpsetup");
|
|
my $t_entry = $entries[0];
|
|
if ( defined($t_entry) ) {
|
|
if ($t_entry =~ /0|n|N/) { $do_dhcpsetup=0; }
|
|
}
|
|
#}
|
|
|
|
if ($do_dhcpsetup) {
|
|
if ($request->{'_disparatetftp'}->[0]) { #reading hint from preprocess_command
|
|
$sub_req->({command=>['makedhcp'],arg=>['-l'],
|
|
node=>\@nodes},$callback);
|
|
} else {
|
|
$sub_req->({command=>['makedhcp'],
|
|
node=>\@nodes},$callback);
|
|
}
|
|
}
|
|
|
|
}
|
|
#unlink the files for 'offline' command
|
|
if($args[0] eq 'offline') {
|
|
foreach my $node (@nodes) {
|
|
my %ipaddrs;
|
|
unless (inet_aton($node)) {
|
|
syslog("local1|err","xCAT unable to resolve IP in pxe plugin");
|
|
return;
|
|
}
|
|
my $ip = inet_ntoa(inet_aton($node));;
|
|
unless ($ip) {
|
|
syslog("local1|err","xCAT unable to resolve IP in pxe plugin");
|
|
return;
|
|
}
|
|
$ipaddrs{$ip} = 1;
|
|
if ($mactab) {
|
|
my $ment = $machash{$node}->[0]; #$mactab->getNodeAttribs($node,['mac']);
|
|
if ($ment and $ment->{mac}) {
|
|
my @macs = split(/\|/,$ment->{mac});
|
|
foreach (@macs) {
|
|
if (/!(.*)/) {
|
|
if (inet_aton($1)) {
|
|
$ipaddrs{inet_ntoa(inet_aton($1))} = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
my $hassymlink = eval { symlink("",""); 1 };
|
|
|
|
unlink($tftpdir."/pxelinux.cfg/".$node);
|
|
|
|
foreach $ip (keys %ipaddrs) {
|
|
my @ipa=split(/\./,$ip);
|
|
my $pname = sprintf("%02X%02X%02X%02X",@ipa);
|
|
unlink($tftpdir."/pxelinux.cfg/".$pname);
|
|
#if ($hassymlink) {
|
|
#symlink($node,$tftpdir."/pxelinux.cfg/".$pname);
|
|
#} else {
|
|
#link($tftpdir."/pxelinux.cfg/".$node,$tftpdir."/pxelinux.cfg/".$pname);
|
|
#}
|
|
}
|
|
}
|
|
}
|
|
|
|
#now run the end part of the prescripts
|
|
unless ($args[0] eq 'stat') { # or $args[0] eq 'enact')
|
|
$errored=0;
|
|
if ($request->{'_disparatetftp'}->[0]) { #the call is distrubuted to the service node already, so only need to handles my own children
|
|
$sub_req->({command=>['runendpre'],
|
|
node=>\@nodes,
|
|
arg=>[$args[0], '-l']},\&pass_along);
|
|
} else { #nodeset did not distribute to the service node, here we need to let runednpre to distribute the nodes to their masters
|
|
$sub_req->({command=>['runendpre'],
|
|
node=>\@rnodes,
|
|
arg=>[$args[0]]},\&pass_along);
|
|
}
|
|
if ($errored) {
|
|
my $rsp;
|
|
$rsp->{errorcode}->[0]=1;
|
|
$rsp->{error}->[0]="Failed in running end prescripts\n";
|
|
$callback->($rsp);
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
#----------------------------------------------------------------------------
|
|
=head3 getNodesetStates
|
|
returns the nodeset state for the given nodes. The possible nodeset
|
|
states are: netboot, install, boot and discover.
|
|
Arguments:
|
|
nodes --- a pointer to an array of nodes
|
|
states -- a pointer to a hash table. This hash will be filled by this
|
|
function. The key is the nodeset status and the value is a pointer
|
|
to an array of nodes.
|
|
Returns:
|
|
(return code, error message)
|
|
=cut
|
|
#-----------------------------------------------------------------------------
|
|
sub getNodesetStates {
|
|
my $noderef=shift;
|
|
if ($noderef =~ /xCAT_plugin::pxe/) {
|
|
$noderef=shift;
|
|
}
|
|
my @nodes=@$noderef;
|
|
my $hashref=shift;
|
|
my $noderestab = xCAT::Table->new('noderes'); #in order to detect per-node tftp directories
|
|
my %nrhash = %{$noderestab->getNodesAttribs(\@nodes,[qw(tftpdir)])};
|
|
if (@nodes>0) {
|
|
foreach my $node (@nodes) {
|
|
my $tftpdir;
|
|
if ($nrhash{$node}->[0] and $nrhash{$node}->[0]->{tftpdir}) {
|
|
$tftpdir = $nrhash{$node}->[0]->{tftpdir};
|
|
} else {
|
|
$tftpdir = $globaltftpdir;
|
|
}
|
|
my $tmp=getstate($node, $tftpdir);
|
|
my @a=split(' ', $tmp);
|
|
$stat = $a[0];
|
|
if (exists($hashref->{$stat})) {
|
|
my $pa=$hashref->{$stat};
|
|
push(@$pa, $node);
|
|
}
|
|
else {
|
|
$hashref->{$stat}=[$node];
|
|
}
|
|
}
|
|
}
|
|
return (0, "");
|
|
}
|
|
|
|
1;
|