3cac50a3bc
Have ddns delete TXT records for DHCP to avoid confusion git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@7680 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
122 lines
3.8 KiB
Perl
Executable File
122 lines
3.8 KiB
Perl
Executable File
#!/usr/bin/env perl
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# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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use Fcntl qw(:DEFAULT :flock);
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sub get_lock {
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unless (flock(LOCKHANDLE,LOCK_EX|LOCK_NB)) {
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$| = 1;
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print "Acquiring startup lock...";
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flock(LOCKHANDLE,LOCK_EX) or die "Error trying to secure a startup lock";
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print "done\n";
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}
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truncate(LOCKHANDLE,0);
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print LOCKHANDLE $$."\n";
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}
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sub release_lock {
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truncate(LOCKHANDLE,0);
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flock(LOCKHANDLE,LOCK_UN);
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}
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BEGIN
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{
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use Time::HiRes qw(sleep);
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use File::Path;
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use Fcntl qw(:DEFAULT :flock);
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$::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat';
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umask 0077;
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mkpath("/tmp/xcat/");
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unless (sysopen(LOCKHANDLE,"/tmp/xcat/consolelock",O_WRONLY | O_CREAT)) {
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sleep 15;
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print "Unable to open lock file";
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exit 0;
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}
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get_lock();
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#my $sleepint=int(rand(10)); #Stagger start to avoid overwhelming conserver/xCATd
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#print "Opening console in ".(2+(0.5*$sleepint))." seconds...\n";
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#sleep $sleepint;
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}
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my $sleepint=int(rand(10)); #Stagger start to avoid overwhelming conserver/xCATd
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use lib "$::XCATROOT/lib/perl";
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require xCAT::Client;
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#require xCAT::Table;
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#require xCAT::Utils;
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require File::Basename;
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import File::Basename;
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my $scriptname = $0;
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#$mptab = xCAT::Table->new('mp');
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#unless ($mptab) {
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#sleep 5; #Try not to overwhelm logfiles...
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# die "mp table must be configured";
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#}
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#$mpatab = xCAT::Table->new('mpa');
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#$passtab = xCAT::Table->new('passwd');
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my $username = "USERID";
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my $passsword = "PASSW0RD";
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my $mm;
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my $slot;
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#my $dba;
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#if ($passtab) {
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# ($dba) = $passtab->getAttribs({key=>blade},qw(username password));
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# if ($dba->{username}) {
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# $username = $dba->{username};
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# }
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# if ($dba->{password}) {
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# $password = $dba->{password};
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# }
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#}
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#$dba = $mptab->getNodeAttribs($ARGV[0],[qw(mpa id)]);
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#$mm = $dba->{mpa};
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#$slot = $dba->{id};
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#if ($mpatab) {
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# ($dba) = $mpatab->getAttribs({mpa=>$mm},qw(username password));
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# if ($dba) {
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# if ($dba->{username}) { $username = $dba->{username}; }
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# if ($dba->{password}) { $password = $dba->{password}; }
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# }
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#}
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#xCAT::Utils::close_all_dbhs;
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#sleep 5; #Slow start, I know, but with exec, can't return
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sub getans {
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my $rsp = shift;
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if ($rsp->{node}) {
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$mm = $rsp->{node}->[0]->{mm}->[0];
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$username = $rsp->{node}->[0]->{username}->[0];
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$slot = $rsp->{node}->[0]->{slot}->[0];
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$slot =~ s/-.*//; #remove range info if multi-wide blade
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}
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}
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my $cmdref={
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command=>["getbladecons"],
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arg=>["text"],
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noderange=>[$ARGV[0]]
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};
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xCAT::Client::submit_request($cmdref,\&getans);
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until ($mm and $username and $slot) {
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release_lock(); #Let other clients have a go
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$sleepint=10+int(rand(20)); #Stagger to minimize lock collisions, but no big deal when it does happen
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print "Console not ready, retrying in $sleepint seconds (Hit Ctrl-E,c,o to skip delay)\n";
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sleep $sleepint;
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get_lock();
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xCAT::Client::submit_request($cmdref,\&getans);
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}
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release_lock(); #done with xcatd, can run with near impunity
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my $solchkcmd = "ssh -t $username"."@"."$mm sol -T blade[$slot]";
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my $solstatus = `$solchkcmd`;
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while ($solstatus !~ /SOL Session: Ready/ and $solstatus !~ /SOL Session: Active/) {
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$sleepint=60+int(rand(30)); #Stagger sleep to take it easy on AMM/hosting server
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print "SOL unavailable, retrying in $sleepint seconds (hit Ctrl-E,c,o to skip)\n";
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sleep $sleepint;
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$solstatus = `$solchkcmd`;
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}
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exec "ssh -t $username"."@"."$mm console -o -T blade[$slot]";
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#my $pathtochild= dirname($scriptname). "/";
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#exec $pathtochild."blade.expect $mm $slot $username $password";
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#SECURITY: In this case, the authentication is expected to be done using the script user's ssh keys. As such,
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#this script does not receive any particularly sensitive data from the xCAT server.
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