Hmm, my cluster will have ~200 nodes (plus some NFS servers with interfaces on the private network).

Is there any way during installation to set 200 nodes and still use 192.168.X.X?

Thanks for your answers and insight so far :)

Ian

On Wed, May 22, 2019 at 3:01 PM Roland Fehrenbacher <rf@q-leap.de> wrote:
>>>>> "I" == Ian Kaufman <ikaufman@eng.ucsd.edu> writes:

    I> I tried to change the IP, but it wouldn't let me overwrite "172"
    I> in the initial installer.

Ah, Ok, I didn't remember that. You'll really have to change the number of
nodes to change it. E.g. 64 nodes will give you 192.168.xxx, 128 nodes
172.xxx and 512 nodes 10.xxx

    I> However, I logged into the console and made the change in the
    I> interfaces file.  I'll see if it carries through. I can always
    I> reinstall if needed.

That will require some hand-work later on with the risk of causing
unnecessary trouble if some things are not changed. Better to reinstall
at this stage.

    I> On Wed, May 22, 2019 at 2:39 PM Roland Fehrenbacher
    I> <rf@q-leap.de> wrote:

    >>>>>> "I" == Ian Kaufman <ikaufman@eng.ucsd.edu> writes:

    I>         I> Yep, that was it ... the installer didn't like the
    I>     existing sw     I> RAID. And using dd I was able to reboot
    I>     from the cli.

    I>     Good news, glad it worked.

    I>         I> One feature request ... allow the end user to pick
    I>     their own     I> private IP space.  I prefer using
    I>     192.168.X.X as campus here uses     I> 172 and 10 around
    I>     campus.

    I>     You can already choose that freely. The suggested and
    I>     initially displayed private network IP space is just
    I>     determined by the number of compute nodes you select (this
    I>     number is otherwise irrelevant) but can be changed to a
    I>     different one in the 'IP address' field below 'Cluster
    I>     network adapter'. This should also be explained when you
    I>     press F1.

    I>     Best,

    I>     Roland

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--
Ian Kaufman
Research Systems Administrator
UC San Diego, Jacobs School of Engineering ikaufman AT ucsd DOT edu