I don't know exactly what the full scheme is, so I'll give an example where the
values can be derived from the name:
(assuming nodes are 72 in the bottom 36u and you want u to flow rack to rack):
subtract 5001, then divide by 2 since they are two nodes per u, take the
remainder when divided by 36 to indicate how for into the current chunk of 36
it is, add 1 to change from 0-35 to 1-36.
[root@mgt ~]# nodegrpch testg nodepos.u='|((($1-5001)/2)%36+1)|'
[root@mgt ~]# nodels qnode5001-qnode5005 nodepos.u
qnode5001: 1
qnode5002: 1
qnode5003: 2
qnode5004: 2
qnode5005: 3
I don't know what your scheme for rack is, but, let's say for example that you
have 72 nodes per rack and you are incrementing in a straightforward way and
w22 is the first rack in this batch, w23 is the second, etc.
(w followed by the number 22 plus which chunk of 72 nodes the number indicates):
[root@mgt ~]# nodegrpch testg nodepos.rack='|w(22+($1-5001)/72)|'
[root@mgt ~]# nodels qnode5001,qnode5072,qnode5073,qnode5144,qnode5145
nodepos.rack
qnode5001: w22
qnode5072: w22
qnode5073: w23
qnode5144: w23
qnode5145: w24
You can nodech or nodegrpch. nodegrpch would mean that future nodes in that
group would default to follow the same scheme going forward.
From: Damir Krstic [mailto:[email protected]]
Sent: Friday, July 10, 2015 10:00 AM
To: xCAT Users Mailing list
Subject: [xcat-user] best way to populate nodepos table
As of today we are not using nodepos table for anything. I started
experimenting and while adding nodepos.rack, nodepos.chassis, and
nodepos.height values are easy to add using nodech command, things that are
different between nodes are not that easy to enter without a lot of manual data
entry.
My table currently looks like this:
#node,rack,u,chassis,slot,room,height,comments,disable
"qnode5001","w22","1","qfpc01","left",,"1u",,
"qnode5002","w22","1","qfpc01","right",,"1u",,
"qnode5003","w22","2","qfpc01","left",,"1u",,
"qnode5004","w22","2","qfpc01","right",,"1u",,
w22 is the floor position of the rack, slot is u 1 in the rack and left or
right indicates where in the chassis node resides.
Is there any way to automate slot and u position using nodech command? Also,
under comments in this table I would like to read-in rinv serial number command
but I am unsure how to do that.
Any help would be greatly appreciated.
Thanks,
Damir
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