Re: [xcat-user] xCAT creates "impossible" node

Tue, 14 Nov 2017 18:22:32 -0800

Hi Kevin,
 
1. Could you check "/proc/sys/kernel/hostname" this file? it will affect the "hostname" result. I do not know if you hit the same problem.
 
[root@bybc0602 ~]# echo bybc0602.cluster.com > /proc/sys/kernel/hostname
[root@bybc0602 ~]# hostname
bybc0602.cluster.com
[root@bybc0602 ~]# hostname -f
bybc0602
 
2. I have a question here : why there are 2 management node mn and mn.dev.sabre2.sandiego.edu ?  You may want to use "makehosts" to generate /etc/hosts file using node mn. But there is another node named mn.dev.sabre2.sandiego.edu.
 
 
Best Regards
--------------------------------------------------
Yuan Bai (白媛)

CSTL HPC System Management Development
Tel:86-10-82451401
E-mail: by...@cn.ibm.com
Address: IBM ZGC Campus. Ring Building 28,
ZhongGuanCun Software Park,No.8 Dong Bei Wang West Road, Haidian District,
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----- Original message -----
From: Kevin Keane <kke...@sandiego.edu>
To: xCAT Users Mailing list <xcat-user@lists.sourceforge.net>
Cc:
Subject: [xcat-user] xCAT creates "impossible" node
Date: Wed, Nov 15, 2017 7:41 AM
 
I have my xCAT system mostly up and running, and am trying to resolve some of the last details. This is xCAT 2.13.8 on RedHat 7.4.
 
Among those problems is that xCAT (specifically, updatenode) creates an "impossible" node. I created one node called "mn" to cover the management node (see below for the details), and one compute node cn-001. updatenode is adding a third node named with the FQDN of the management node. I am calling this an "impossible" node because node names aren't supposed to contain periods.
 
Specifically, I see this "impossible" node when I use:
 
 
updatenode '/cn-.*'
 
Why would updatenode even try to update the management node?
 
I have a second, and potentially related, problem:
 
After a fresh install, hostname and hostname -f both return the FQDN:mn.dev.sabre2.sandiego.edu
 
At some point after installing xCAT (I have not nailed down when), this changes. hostname will continue to return the FQDN, but hostname -f will return "mn". Of course, I would expect the reverse.
 
Thanks!

 
Here is the output of lsdef -l

[root@mn ~]# lsdef -l
Object name: cn-001
    arch=x86_64
    cons=ipmi
    currstate=netboot rhels7.4-x86_64-hpccn
    groups=ipmi,all,compute
    installnic=mac
    ip=192.168.101.3
    mac=52:54:00:f2:e6:39
    mgt=ipmi
    netboot=xnba
    nichostnamesuffixes.eth0=-comp
    nicips.eth0=192.168.100.3
    nicips.eth1=192.168.101.3
    os=rhels7.4
    postbootscripts=otherpkgs,confignics
    postscripts=syslog,remoteshell,syncfiles,setupntp
    primarynic=mac
    profile="">    provmethod=rhels7.4-x86_64-netboot-hpccn
    updatestatus=failed
    updatestatustime=11-14-2017 14:37:59
Object name: mn
    groups=__mgmtnode
    hostnames=mn.dev.sabre2.sandiego.edu
    ip=192.168.20.2
    nichostnamesuffixes.eth0=-comp
    nichostnamesuffixes.eth2=-mgt
    nicips.eth1=192.168.20.2
    nicips.eth0=192.168.100.2
    nicips.eth2=192.168.101.2
    postbootscripts=otherpkgs
    postscripts=syslog,remoteshell,syncfiles
Object name: mn.dev.sabre2.sandiego.edu
    postbootscripts=otherpkgs
    postscripts=syslog,remoteshell,syncfiles
    updatestatus=synced
    updatestatustime=11-14-2017 14:37:59
 
 

--

_______________________________________________________________________
Kevin Keane | Systems Architect | University of San Diego ITS | kke...@sandiego.edu
Maher Hall, 192 |5998 Alcalá Park | San Diego, CA 92110-2492 | 619.260.6859

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