mirror of
https://github.com/xcat2/xcat-core.git
synced 2025-08-20 18:20:27 +00:00
85 lines
2.7 KiB
Perl
Executable File
85 lines
2.7 KiB
Perl
Executable File
#!/usr/bin/env perl
|
|
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
|
|
use Fcntl qw(:DEFAULT :flock);
|
|
|
|
sub get_lock {
|
|
unless (flock(LOCKHANDLE, LOCK_EX | LOCK_NB)) {
|
|
$| = 1;
|
|
print "Acquiring startup lock...";
|
|
flock(LOCKHANDLE, LOCK_EX) or die "Error trying to secure a startup lock";
|
|
print "done\n";
|
|
}
|
|
truncate(LOCKHANDLE, 0);
|
|
print LOCKHANDLE $$ . "\n";
|
|
}
|
|
|
|
sub release_lock {
|
|
truncate(LOCKHANDLE, 0);
|
|
flock(LOCKHANDLE, LOCK_UN);
|
|
}
|
|
|
|
BEGIN
|
|
{
|
|
use Time::HiRes qw(sleep);
|
|
use File::Path;
|
|
use Fcntl qw(:DEFAULT :flock);
|
|
$::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat';
|
|
umask 0077;
|
|
mkpath("/tmp/xcat/");
|
|
unless (sysopen(LOCKHANDLE, "/tmp/xcat/consolelock", O_WRONLY | O_CREAT)) {
|
|
sleep 15;
|
|
print "Unable to open lock file";
|
|
exit 0;
|
|
}
|
|
get_lock();
|
|
}
|
|
my $sleepint = int(rand(10)); #Stagger start to avoid overwhelming conserver/xCATd
|
|
use lib "$::XCATROOT/lib/perl";
|
|
require xCAT::Client;
|
|
require File::Basename;
|
|
import File::Basename;
|
|
my $scriptname = $0;
|
|
|
|
my $username = "USERID";
|
|
my $passsword = "PASSW0RD";
|
|
my $mm;
|
|
my $slot;
|
|
|
|
sub getans {
|
|
my $rsp = shift;
|
|
if ($rsp->{node}) {
|
|
$mm = $rsp->{node}->[0]->{mm}->[0];
|
|
$username = $rsp->{node}->[0]->{username}->[0];
|
|
$slot = $rsp->{node}->[0]->{slot}->[0];
|
|
$slot =~ s/-.*//; #remove range info if multi-wide blade
|
|
}
|
|
}
|
|
my $cmdref = {
|
|
command => ["getbladecons"],
|
|
arg => ["text"],
|
|
noderange => [ $ARGV[0] ]
|
|
};
|
|
xCAT::Client::submit_request($cmdref, \&getans);
|
|
until ($mm and $username and $slot) {
|
|
release_lock(); #Let other clients have a go
|
|
$sleepint = 10 + int(rand(20)); #Stagger to minimize lock collisions, but no big deal when it does happen
|
|
print "Console not ready, retrying in $sleepint seconds (Hit Ctrl-E,c,o to skip delay)\n";
|
|
sleep $sleepint;
|
|
get_lock();
|
|
xCAT::Client::submit_request($cmdref, \&getans);
|
|
}
|
|
release_lock(); #done with xcatd, can run with near impunity
|
|
my $solchkcmd = "ssh -t $username" . "@" . "$mm sol -T blade[$slot]";
|
|
my $solstatus = `$solchkcmd`;
|
|
while ($solstatus !~ /SOL Session: Ready/ and $solstatus !~ /SOL Session: Active/) {
|
|
$sleepint = 60 + int(rand(30)); #Stagger sleep to take it easy on AMM/hosting server
|
|
print "SOL unavailable, retrying in $sleepint seconds (hit Ctrl-E,c,o to skip)\n";
|
|
sleep $sleepint;
|
|
$solstatus = `$solchkcmd`;
|
|
}
|
|
exec "ssh -t $username" . "@" . "$mm console -o -T blade[$slot]";
|
|
|
|
#SECURITY: In this case, the authentication is expected to be done using the script user's ssh keys. As such,
|
|
#this script does not receive any particularly sensitive data from the xCAT server.
|
|
|