You may actually want to use *three* networks. One with DHCP, a second for
IPMI, and a third for your hosts. You can run all of them over the same
interface (just make sure that only one network has a DHCP server!)
Also make sure that your IPMI interface on the nodes has a separate MAC
address from the NIC on the same interface - otherwise the DHCP server may
get confused.
I am using this configuration with MTMS discovery, although I'm still
working on figuring out some details. It probably should work just as well
with sequential discovery.
The sequence of events will be something like this:
- IPMI will request an IP address from the DHCP server.
- xCAT will configure the static IP address for IPMI (see
chain=run=bmcsetup). From then on, IPMI will no longer use the network with
the DHCP server.
- The node's BIOS will PXE-boot the genesis image, using DHCP.
- This completes the discovery.
- The node will reboot, and this time PXE-boot your image, again using DHCP
- xCAT will reconfigure the network to use whatever static IP you provided
in the node. That should be on the third network.
_______________________________________________________________________
Kevin Keane | Systems Architect | University of San Diego ITS |
kke...@sandiego.edu
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On Tue, May 29, 2018 at 12:16 PM, Daniel Hilst Selli <
dan...@versatushpc.com.br> wrote:
> Hi everybody.
>
> I was following the sequential discovery in the xCAT docs. At some point it
> says:
>
> Set the correct NIC from which DHCP server provide service:
>
> chdef -t site dhcpinterfaces=eth1,eth2
>
>
> My question is, if I'm using shared interface for IPMI and host network,
> how to
> make sequential discovery work, so that IPMI and host get in the right
> network?
>
> Regards,
>
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