What did it try prior to 0A6E04?  Does sn1 resolve to the same ip?  If new ips, 
could redo nodeset (if boot to hard drive, nodeset sn1 boot)

-----Original Message-----
From: Jeff White [mailto:[email protected]] 
Sent: Monday, January 04, 2016 3:08 PM
To: [email protected]
Subject: [xcat-user] Unable to boot nodes after renaming them

I have xCAT 2.10 running on CentOS 7 with a number of stateless nodes.  
This was working fine until I renamed these nodes:

cn36 --> sn1
cn37 --> sn2
cn38 --> sn3
cn39 --> sn4

I did that with `chdef` and also changed the nodes' IPs with `nodech`, I do not 
know what those two tools did but in this case the nodes no longer boot.  They 
appear to be trying to use the wrong kernel image.  
The error is:

Trying to load: pxelinux.cfg/0A6E04
Could not find kernel image: xcat/nbk.x86_64

The nodes which were not renamed continue to boot correctly.  So:

1. What would chdef and nodech have changed to point these nodes to a different 
kernel image?
2. How do I set them back to the image every other node is using?


I noticed that under /tftpboot/pxelinux.cfg/ there were symlinks of the 
old node names:

lrwxrwxrwx  1 root root   4 Nov 23 11:33 0A6E0438 -> cn36
lrwxrwxrwx  1 root root   4 Nov 23 11:34 0A6E0439 -> cn37
lrwxrwxrwx  1 root root   4 Nov 23 11:35 0A6E043A -> cn38
lrwxrwxrwx  1 root root   4 Nov 23 13:00 0A6E043B -> cn39

I manually changed this to the new names (mv cn36 sn1; rm 0A6E0438; ln 
-s sn1 0A6E0438) but that appears to have no effect, the nodes still 
fail with the same error.

-- 
Jeff White
HPC Systems Engineer
Information Technology Services - WSU


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