> Do you have
/opt/xcat/xdsh/Context directory with two files DSH.pm and
XCAT.pm?
On both the management and service nodes,
/opt/xcat/xdsh is empty. No Context folder or files anywhere, totally empty
directory.
> Also see if DSH_CONTEXT is
exported. It should not be, but you should have gotten an error,
if you did. That is a strange error message "Error: Invalid context specified: DSH"
That is not exported on the mgmt or
service nodes
> Is
the Management Node and the service nodes still at xCAT 2.3? It
will be really had to support that level, it has been out of
service for a long time.
Yes. I understand it is a very old release, but we cannot upgrade at
this time. Like I mentioned, we are just trying to determine if this
is actually something we need to track down and resolve, or if it's
an error that's not really an error.
> xdsh does not log onto the
nodes. It just run the remote command. YOu can run xdsh c26n24 -T "uptime" and it will show the
exact command it runs. What OS are you running?
The results of me using "-T" was included in my previous email - no
helpful output at all. The mgmt, service, and compute nodes are all
CentOS 5.4 x64.
> See if you can run the following:
Here's the results, seems to have worked fine:
13:24:07 up 46 days, 1:43, 22 users, load average: 0.47, 0.41,
0.40
:DSH_TARGET_RC=0:
Thanks for your continued help!
On 12/8/2012 5:32 AM, Lissa Valletta
wrote:
Do you have
/opt/xcat/xdsh/Context directory with two files DSH.pm and
XCAT.pm?
Also see if DSH_CONTEXT is
exported. It should not be, but you should have gotten an
error, if you did. That is a strange error message "Error: Invalid context specified: DSH"
Is the Management Node and the
service nodes still at xCAT 2.3? It will be really had to
support that level, it has been out of service for a long
time.
Lissa K. Valletta
8-3/B10
Poughkeepsie, NY 12601
(tie 293) 433-3102
 Russell Jones
---12/07/2012 03:49:47 PM---Also forgot to mention, we are
*not* using the syslog postscript. Each node is responsible
for thei
From: Russell Jones
<russ...@jonesmail.me>
To: xcat-user@lists.sourceforge.net
Date: 12/07/2012 03:49 PM
Subject: Re: [xcat-user] Cannot find master
for the node $node
Also forgot to mention, we are *not*
using the syslog postscript. Each node is responsible for their
own logs.
On 12/7/2012 2:45 PM, Russell Jones
wrote:
I am not having much luck finding an
xdsh command to run that succeeds. I get "permission denied"
on the mgmt node for any command I try to run as root. On the
service nodes, I am trying to follow the xdsh man page to just
run a simple uptime and am getting:
[root@service01 ~]# xdsh c26n24 "uptime"
Error: Invalid context specified: DSH
Error: Failed to dispatch command to any of the following
service nodes: service01,service02,service03,service04
>From the management node (trying to use the trace option
to see errors):
[root@mgmt1 ~]# xdsh c26n24 -T "uptime"
Error: Permission denied for request
Logs show:
Dec 7 14:36:13 mgmt1 xCAT: xCAT: Allowing xdsh to c26n24 for
root from localhost
Policy table for root:
"1","root",,,,,,"allow",,
Not seeing anything in the compute nodes messages or secure
that would lead me to believe an attempt to login via SSH was
ever made.
psh, on the other hand, works fine. the remoteshell script
does run on each node at boot time.
On 12/7/2012 1:42 PM, Ling Gao
wrote:
The error is given because
the nodes are not in the same subnet as the service node,
the script did not check for routing.
The code uses this function to set up MASTER environmental
variable for the node when calling postscripts. If it is not
set up correctly some of the postscripts such as syslog will
fail. When you say "it
works fine even with that error". Can you xdsh to the nodes that
has the error?
Ling
Ling Gao
Poughkeepsie Unix Development Lab
IBM Systems and Technology Group
Internal: T/L 293-5692
External: ling...@us.ibm.com, 845-433-5692
"I never worry about the future. It comes soon enough." ---
Albert Einstein
From: Russell
Jones <russ...@jonesmail.me>
To: xcat-user@lists.sourceforge.net
Date: 12/07/2012
02:06 PM
Subject: Re:
[xcat-user] Cannot find master for the node $node
Thanks!
DNS is working properly, both forward and reverse... this
seems to occur mostly when entire clusters are booted at the
same time.
The nodes are not within the same subnet, all of these nodes
are on different subnets from the service nodes (and routed
of course). The other strange thing is again, it works fine
even with that error:
[root@service03-hc log]# grep c25n37 messages
Dec 7 09:05:02 service03 xCAT: xCAT: Allowing getpostscript
from c25n37
Dec 7 09:05:03 service03 xCAT: Cannot find master for the
node c25n37
Dec 7 09:05:14 service03 xCAT: xCAT: Allowing
getcredentials from c25n37
Dec 7 09:05:24 service03 xCAT: xCAT: Allowing
getcredentials from c25n37
Dec 7 09:05:32 service03 xCAT: xCAT: Allowing
getcredentials from c25n37
Could this message manifest itself if a service node is very
busy? IE, not really an error, just took too long to respond
to the request? Or is this literally sending the error
because the compute nodes are not on the same subnet as the
service nodes?
On 12/7/2012 12:18 PM, Ling Gao wrote:
Hi,
The error is from getFacingIP function. This function takes
a node name as an input. Then it
find out the ip of the given node. Then it call "ifconfig"
on the local host. Then it try to see if the node ip and
local host is within the same subnet or not. (Please see the
code below). The error usually happens when the name
resolution on the local host cannot resolve the given node.
Hope it helps.
#-------------------------------------------------------------------------------
=head3 getFacingIP
Gets the ip address of the adapter of the localhost
that is facing the
the given node.
Arguments:
The name of the node that is facing the localhost.
Returns:
The ip address of the adapter that faces the node.
=cut
#-------------------------------------------------------------------------------
sub getFacingIP
{
my ($class, $node) = @_;
my $ip;
my $cmd;
my @ipaddress;
my $nodeip = inet_ntoa(inet_aton($node));
unless ($nodeip =~ /\d+\.\d+\.\d+\.\d+/)
{
return 0; #Not supporting IPv6 here IPV6TODO
}
$cmd = "ifconfig" . " -a";
$cmd = $cmd . "| grep \"inet \"";
my @result = xCAT::Utils->runcmd($cmd, 0);
if ($::RUNCMD_RC != 0)
{
xCAT::MsgUtils->message("S", "Error from $cmd\n");
exit $::RUNCMD_RC;
}
# split node address
my ($n1, $n2, $n3, $n4) = split('\.', $nodeip);
foreach my $addr (@result)
{
my $ip;
my $mask;
if (xCAT::Utils->isLinux())
{
my ($inet, $addr1, $Bcast, $Mask) = split(" ",
$addr);
if ((!$addr1) || (!$Mask)) { next; }
my @ips = split(":", $addr1);
my @masks = split(":", $Mask);
$ip = $ips[1];
$mask = $masks[1];
}
else
{ #AIX
my ($inet, $addr1, $netmask, $mask1, $Bcast,
$bcastaddr) =
split(" ", $addr);
if ((!$addr1) && (!$mask1)) { next; }
$ip = $addr1;
$mask1 =~ s/0x//;
$mask =
`printf "%d.%d.%d.%d" \$(echo "$mask1" | sed
's/../0x& /g')`;
}
if ($ip && $mask)
{
# split interface IP
my ($h1, $h2, $h3, $h4) = split('\.', $ip);
# split mask
my ($m1, $m2, $m3, $m4) = split('\.', $mask);
# AND this interface IP with the netmask of the
network
my $a1 = ((int $h1) & (int $m1));
my $a2 = ((int $h2) & (int $m2));
my $a3 = ((int $h3) & (int $m3));
my $a4 = ((int $h4) & (int $m4));
# AND node IP with the netmask of the network
my $b1 = ((int $n1) & (int $m1));
my $b2 = ((int $n2) & (int $m2));
my $b3 = ((int $n3) & (int $m3));
my $b4 = ((int $n4) & (int $m4));
if (($b1 == $a1) && ($b2 == $a2)
&& ($b3 == $a3) && ($b4 == $a4))
{
return $ip;
}
}
}
xCAT::MsgUtils->message("S", "Cannot find master for
the node $node\n");
return 0;
}
Ling Gao
Poughkeepsie Unix Development Lab
IBM Systems and Technology Group
Internal: T/L 293-5692
External: ling...@us.ibm.com, 845-433-5692
"I never worry about the future. It comes soon enough." ---
Albert Einstein
From: Russell
Jones <russ...@jonesmail.me>
To: xCAT
Users Mailing list <xcat-user@lists.sourceforge.net>
Date: 12/07/2012
11:05 AM
Subject: [xcat-user]
Cannot find master for the node $node
Hi all,
What circumstances have to be present for an xCAT 2.3
service node (old
I know, but upgrade is not an option at this time) to
write to the logs:
Dec 7 09:16:33 service03 xCAT: Cannot find master for the
node c25n25
All of our service nodes have been doing this for at least
over a month
now, and we have just never noticed it before as nodes are
netbooting/installing fine. Just curious what the logic is
in the code
that has this message being written out, just so that if
it turns out to
be something we need to track down we know where to start.
Thanks!
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