Adding auxiliary DHCP interface to host

n8ur

New Member
Oct 10, 2024
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My question is a different take on the one that's been answered before about configuring Proxmox to use DHCP instead of static address. In my case, I have separate 10 GbE NICs configured with static addresses on server, storage, and corosync VLANs and that all works fine.

The nodes have a built-in 1 GbE NIC that I would like to configure for DHCP "emergency" access if the rest of the network gets messed up. This isn't for day to day use, but as a backup if I screw up the network config (which has been known to happen...)

I configured the interface in /etc/network/interfaces with the appropriate stanza for DHCP. I can ping and ssh to the box using the DHCP interface. But the web interface will not connect. Is there a way to make the web interface respond on the the DHCP interface (without breaking it on the static interfaces), or is this a system limitation? Even if I can't get web access on the DHCP interface, being able to ssh in is still nice insurance.

Thanks!
 
Do you have the firewall enabled? In that case you would need to add the backup management IP to the management IPSet.