Changing NIC on clustered node

Dec 8, 2022
56
3
8
Having some problems the last week or so with two of my nodes in my three node cluster. I believe it's heat related so want to install a new PCIe NIC that has a fan that I use in the node without problems. Given the cluster, and that one of the nodes has the corosync main IP, I want to know if my thought process on how to change interfaces is as I think. Here's my current interface config:

Code:
auto lo
iface lo inet loopback

iface enp9s0f0 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.1.8/24
        gateway 192.168.1.1
        bridge-ports enp9s0f0
        bridge-stp off
        bridge-fd 0

iface enx026662e2a00e inet manual

auto enp9s0f1
iface enp9s0f1 inet static
        address 192.168.2.6/24

For the sake of this conversation, let's assume that the new card has NICs named en0 and en1. Can I just install it, change the interface config as follows, shutdown the node, swap the network cables to the new card, and reboot and all acts like nothing happened?

Code:
auto lo
iface lo inet loopback

iface enp9s0f0 inet manual

iface enx026662e2a00e inet manual

iface enp9s0f1 inet manual

iface en0 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.1.8/24
        gateway 192.168.1.1
        bridge-ports en0
        bridge-stp off
        bridge-fd 0

auto en1
iface en1 inet static
    address 192.168.2.6/24
 
I didn't. Turns out the over heating issue was the network switch itself. That said, I don't see why what I proposed wouldn't work out as expected.
 
  • Like
Reactions: kesawi
I wanted to add a 2.5gb NIC to one of my nodes. I was able to plug in the 2nd NIC and use the node's network pane within the proxmox web UI to switch the interface (vmbr0 for example) to sue the new NIC. seem to work just fine. Not sure if that helps.
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!