Move cluster to new vlan

hjorslev

Member
May 9, 2021
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Hello

I run a small home lab with a cluster consisting of two nodes. They are all running on the native vlan 1. already use vlans for my VMs and CTs but I am a bit unsure as to how I can move both cluster nodes to another vlan.

My aim is to move the entire cluster to a vlan 5 from which I will access the GUI and that all migration traffic etc. is handled here.

Below is my current network configuration. I have all four available ethernet ports configured in one single LACP.

Code:
auto lo
iface lo inet loopback

auto eno3
iface eno3 inet manual
#10G

auto eno1
iface eno1 inet manual
#1G

auto eno2
iface eno2 inet manual
#1G

auto eno4
iface eno4 inet manual
#10G

auto bond0
iface bond0 inet manual
        bond-slaves eno1 eno2 eno3 eno4
        bond-miimon 100
        bond-mode 802.3ad

auto vmbr0
iface vmbr0 inet static
        address 172.16.1.10
        gateway 172.16.1.1
        bridge-ports bond0
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094
#Trunk (LACP)

https://pve.proxmox.com/pve-docs/chapter-sysadmin.html#_vlan_802_1q states that "It is possible to apply VLAN tags to any network device (NIC, Bond, Bridge). In general, you should configure the VLAN on the interface with the least abstraction layers between itself and the physical NIC."

I am unsure how to proceed next. Is it just to add iface bond0.5 inet manual below the bond in my configuration on both nodes or do I need to do more? In the article mentioned above it seems they have to bridges vmbr0v5 and vmbr0 -- what is the difference here?

Code:
auto vmbr0v5
iface vmbr0v5 inet static
        address  10.10.10.2/24
        gateway  10.10.10.1
        bridge-ports bond0.5
        bridge-stp off
        bridge-fd 0

auto vmbr0
iface vmbr0 inet manual
        bridge-ports bond0
        bridge-stp off
        bridge-fd 0

I am aware that I also need to update the hosts and corosync file as specified in https://forum.proxmox.com/threads/change-cluster-nodes-ip-addresses.33406/