[Rocks-Discuss] Renaming compute nodes in Rocks 5.1

[Vlad Manea]

Hi,

I need to rename some of the compute nodes.
What is the best way to do this?

Thanks,
Vlad

[Mason J. Katz]

To change a compute node's primary hostname you'll need to remove and
re-install the host.

For example to rename compute-4-3 to compute-5-16

# rocks remove host compute-4-3
# insert-ethers --rack=5 --rank=16

mason katz

[vl...@geociencias.unam.mx]

Thanks Manson,

I removed the compute nodes,but when I ran
insert-ethers --rack=0 --rank=13 for example,
I got the insert-ethers menu. I selected Compute,
but then nothing happens...

Vlad

[Naveed Near-Ansari]

You will need to reboot the node with PXE to have the headnode gets its
mac address and add it back in.

Naveed

[vl...@geociencias.unam.mx]

Thanks Naveed.

Vlad
______________

[Vlad Manea]

Hi Naveed and Manson,

I changed the compute nodes names, but I see that Ganglia doesn't
follow up. It still shows the old names some of the nodes as down.

Vlad
___________________

--
*Dr. Vlad Constantin Manea*
*Professor of Geophysics*
Computational Geodynamics Lab. <http://www.geociencias.unam.mx/geodinamica>
Centro de Geociencias,
Campus UNAM, Juriquilla,
Blvd Juriquilla 3001,
Juriquilla, Querétaro, 76230,
México.
phone: +52 55 5623 4104/ext.133
fax: (55) 5623-4129
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[Greg Bruno]

On Wed, May 20, 2009 at 11:01 AM, Vlad Manea <vl...@geociencias.unam.mx> wrote:
> Hi Naveed and Manson,
>
> I changed the compute nodes names, but I see that Ganglia doesn't
> follow up. It still shows the old names some of the nodes as down.

try restarting ganglia on the frontend:

# service gmetad stop
# service gmond stop
# service gmond start
# service gmetad start

[Vlad Manea]

Thanks Greg.

Vlad

--
*Dr. Vlad Constantin Manea*
*Professor of Geophysics*
Computational Geodynamics Lab. <http://www.geociencias.unam.mx/geodinamica>
Centro de Geociencias,
Campus UNAM, Juriquilla,
Blvd Juriquilla 3001,
Juriquilla, Querétaro, 76230,
México.
phone: +52 55 5623 4104/ext.133
fax: (55) 5623-4129
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