Hi,

I'm trying to understand the recommended way of setting up a cluster with
multiple networks.

Specifically, I note the recommendation that the BMC should have a static
IP address *in a different subnet* from the node's main IP address, and
also in a different subnet from the DHCP-assigned BMC address during
discovery. Does that imply that the same physical network should have two,
or even three, different subnets running on it?

http://xcat-docs.readthedocs.io/en/stable/guides/admin-guides/manage_clusters/ppc64le/discovery/mtms/discovery_using_defined.html

In this example, there are actually three subnets involved.

The DHCP server apparently serves the subnet 50.0.100.0/24
The BMC will be configured with a static IP on 50.0.101.0/24
And the node's IP will be on the 10.0.100.0/24 subnet.

Assuming that the BMC does not have a dedicated NIC, but is shared with the
first NIC, how would I configure the various tables in xCAT?

It looks like I would need to touch the network table, the site table, and
the node object for the management node?

Thanks!

-- 

_______________________________________________________________________
Kevin Keane | Systems Architect | University of San Diego ITS |
kke...@sandiego.edu
Maher Hall, 192 |5998 Alcalá Park | San Diego, CA 92110-2492 | 619.260.6859
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