[Rocks-Discuss] Replacing a compute node

[Marty Dippel]

Can anyone help with this seemingly simple task?

I've had to replace a motherboard in one of our computes, and along with it
(sigh) the MAC addresses. There's no removable FLASH memory, it's integrated.

What's the best way to update ROCKS' notion of the MAC address?

I thought to "rocks remove host pxeboot compute-1-12" but this cluster seems to
have no "rocks" command(!) -Where's it supposed to be located?

Also thought to "/opt/rocks/sbin/update-node-info --mac=<new_MAC_address>
compute-1-12" but root doesn't have permission to execute this python script(!!?!)

Is this best done by using the GUI to edit the database?

We're running Platform ROCKS, /etc/rocks-release says:
Rocks release 4.1.1-2.0 (Cobblestone)

Thanks, anyone!

Marty Dippel
Illinois Institute of Technology
Research Data Center

[Diego M. Vadell]

Hi,
Why don't you reinstall the node, replacing it? Something like:

insert-ethers --replace=compute-0-18

Regards,
-- Diego.

[Kaufman, Ian]

The "rocks" command line tools became available in 4.3.
Prior to that, there was no unified set of commands.

So, Diego's method is the appropriate one to use:

insert-ethers --replace compute-0-18

If that fails, you may want to try removing and readding
with:

insert-ethers --remove compute-0-18

insert-ethers --hostname compute-0-18

and PXE boot.

Ian Kaufman
Research Systems Administrator
Jacobs School of Engineering
ikau...@soe.ucsd.edu x49716

[mdi...@iit.edu]

Ian-

Thanks for the thoughtful, informative response.

I've used --replace to solve the issue, worked very well. Good to know there are more options to insert-ethers (I really must RTFM, and soon) -also good to learn that the more unified 'rocks' commands first appeared in a version later than the one inuse here (...so I'm really not losing my mind, after all...)

I'm getting re-familiarized with ROCKS after a few years- the insight you provide is most welcome.

Thanks,all!
Marty

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