I am currently using single NFS based PXE boot on eight nodes. I followed the guide on https://help.ubuntu.com/community/DisklessUbuntuHowto

Each nodes has a 1G and 10G network. Both of them are plugged in, i want to use 1G port for IPMI only and 10G for the regular networking.

But as the system boots, it activates both interfaces and assigns DHCP generated ip. How do i disable the first NIC on linux.

eno1      # 1G
enp7s0    # 10G

I have my BIOS set to PXE from 10G only, and it is working as expected.

So far i have tried following in /network/interfaces (Different trials).

iface eno1 inet manual

iface eth0 inet manual

iface enp7s0 inet manual

auto enp7s0    
iface enp7s0 inet dhcp

I would rather have eno1 disabled or as backup interface instead of default on.

Thank you


Documentation is here:

man 5 interfaces

config file to edit:


example config;

iface bob0 inet static

skip providing any ip, the device is static rather than dhcp and has no ip...

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