The request I was sending to the
master node was hanging but sending the same request to any
other service node was returning back promptly.
- Yes it was working perfectly fine before.
- xCAT 2.8
- Nop, couldn't see anything in logs.
Hope it helps.
Best Regards,
Qamar Nazir
HPC Software Engineer
On 05/29/2013 09:36 AM, Xiao Peng Wang wrote:
Since the 'install monitor'
process handles the request in sequential, I am afraid that
the process hang in certain place that handling certain
request.
Did it work good before?
Which xCAT version are you
using?
Could you find some clues in
the syslog?
Thanks
Best Regards
----------------------------------------------------------------------
Wang Xiaopeng (王晓朋)
IBM China System Technology Laboratory
Tel: 86-10-82453455
Email: [email protected]
Address: 28,ZhongGuanCun Software Park,No.8 Dong Bei Wang West
Road, Haidian District Beijing P.R.China 100193
 Qamar Nazir ---2013/05/28 18:55:52---Hi List, I
couldn't find the solution for this issue.
From: Qamar Nazir
<[email protected]>
To: <[email protected]>,
Date: 2013/05/28 18:55
Subject: Re: [xcat-user] Installing node
hanging at updateflag.awk
Hi List,
I couldn't find the solution for this issue.
I have resolved it by the following the below steps:
- killed the process 'xcatd: install monitor' manually
- Restarted xcatd on the master node.
Before when I was trying to run the command '/usr/bin/awk -f
/xcatpost/updateflag.awk <master node IP> 3002' manually
it wasn't returning the prompt back. Once I did the above steps
it returned the prompt in a second.
Best Regards,
Qamar Nazir
HPC Software
Engineer
On 12/09/2011 03:27
AM, Jing CDL Sun wrote:
OK, seems not a
name resoluion issue. then, maybe you need to follow
xiaopeng's suggestion for more debugging.
OR, another straight forward debugging method is to start the
xcatd in front, it will show some message about the
communication between mn and cn. I used to debug with it, for
example:
service xcatd stop
/opt/xcat/sbin/xcatd -f
Best Regards,
-----------------------------
Sun Jing(Ëﾸ)
IBM China Software Development Laboratory
Tel: (86-10) 82453625 E-mail: [email protected]
Address: Building 28, ZhongGuanCun Software Park,
No.8, Dong Bei Wang West Road, Haidian District
Beijing 100193, PRC
±±¾©Êú£µÃÇø¶«±±ÃúÎ÷·8ºÅÖùشåÈüþÔ°28ºÅÂ¥
Óʱà : 100193
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Re: [xcat-user] Installing node
hanging at updateflag.awk
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Hi Jing,
Yes, the node can resolve cmgmt1, and cmgmt1 can resolve the
node. I've checked the resolv.conf on the node's console while
it is hung, as well as was able to ping cmgmt1.
That's why this is so strange (and has me pulling my hair
out!). If I set the node to install a different profile it
installs and runs the postscripts fine, no hang, and reboots
without an issue. It's just this specific workstation profile
that it is having trouble with, but I don't see anything in
the postscripts of this profile that should cause this
behavior.
2011/12/8 Jing CDL Sun <[email protected]>
Hi Dave,
Another thing I can think of is, have you check if cmgmt1 can be resolved on
your compute node? Basically you need to set
site.nameservers=<mn's ip>, site.domain=<your domain
name>, then after makedhcp, the nameserver/domain value
will be set in your dhcp server configuration, so after the
compute node is installed, the dhcp server will create
/etc/resolv.conf on your compute node so that the compute node
will know the mn is its name server, and the search path is
your domain.
Best Regards,
-----------------------------
Sun Jing(Ëﾸ)
IBM China Software Development Laboratory
Tel: (86-10) 82453625 E-mail: [email protected]
Address: Building 28, ZhongGuanCun Software Park,
No.8, Dong Bei Wang West Road, Haidian District Beijing
100193, PRC
±±¾©Êú£µÃÇø¶«±±ÃúÎ÷·8ºÅÖùشåÈüþÔ°28ºÅÂ¥
Óʱà : 100193
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Re:
[xcat-user] Installing node hanging at
updateflag.awk
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Hi Xiao,
Yes this is a diskfull installation. I will take a look at the
syslog tomorrow when I am back in the office to see if I see
anything that could be helpful that I may have missed.
Given that the node can install fine when being set to one
profile, but not another, what other things outside of DNS and
iptables could cause the management node to not be able to
receive (or reply) to the flag my node is apparently failing
to send?
2011/12/8 Xiao Peng Wang <[email protected]>
updateflag.awk is used to send a request to xcatd to indicate
that installation/netboot has been finished.
The 'updateflag.awk MN 3002' will be
called for diskfull installation and 'updateflag.awk
$MASTER 3002 "installstatus booted"' should be for the
diskless boot. So you case was a diskfull installation, right?
For the debugging, you need to check whether the process
'xcatd: install monitor' has been started on MN, it is used to
handle the request from the updateflag.awk.
Also you can try to get some hints from syslog: 1. whether
'nodeset next' command was called? 2. Search the message from
node with tag 'xcat'.
You also could try to debug into the do_installm_service in
the xcatd. See the code to handle the 'ready', 'next' ...
Thanks
Best Regards
----------------------------------------------------------------------
Wang Xiaopeng (ÃõÃþÅó)
IBM China System Technology Laboratory
Tel: 86-10-82453455
Email: [email protected]
Address: 28,ZhongGuanCun Software Park,No.8 Dong Bei Wang West
Road, Haidian District Beijing P.R.China 100193
Dave Barry ---2011-12-09
07:35:12---Hi *, Can't seem to figure this issue out. I have a
node who is running it's
From: Dave
Barry <[email protected]>
To: xCAT
Users Mailing list <[email protected]>
Date: 2011-12-09
07:35
Subject: [xcat-user] Installing node hanging at updateflag.awk
Hi *,
Can't seem to figure this issue out. I have a node who is
running it's postscripts properly (as far as I can tell), but
then hangs at updateflag.awk. The specific line that it seems
to hang at and is showing in ps xf is:
/bin/awk -f updateflag.awk cmgmt1 3002
That's all that is in the processes line, there is no actual
command after the 3002. Even more puzzling is in
/tmp/mypostscript.post, the following line does not exist at
the very end, while it does on other nodes who installed
properly:
updateflag.awk $MASTER 3002 "installstatus booted"
I can resolve both the node and it's master forwards and
backwards. This node also installs just fine when I give it a
different profile, so there is either something in the OS it
is installing (centos 5.4) or one of my postscripts in this
profile that is causing the issue, but I don't know how to
continue troubleshooting this problem when the issue does not
appear to be DNS related. Usually problems like this are
caused by DNS.
What would cause mypostscript.post to not have the
installstatus line at the bottom? Does this line get written
to that file after a certain "something" happens? Any thoughts
on logs or something I can look at that would cause this
behavior?
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