Multiple NICs

[sariel1988]

Hello, I've been searching for awhile, and haven't been able to figure out how to do this without breaking my current setup. I'm looking for some guidance on where to find this information.

My situation: I have a 3 Node cluster setup with Proxmox 5.1. Each one of my servers has multiple NICs - some up to 12. But it seems that each node is only using 1 NIC each. How can I make the other NIC's available in the web API, and then subsequently assign them to guest VM's? I have roughly 12 guest VM's running currently, and ideally would like each one to have it's own bridge.

Thanks in advance!

 

[LnxBil]

and ideally would like each one to have it's own bridge.

What do you want to accomplish with this? "just" more bandwidth? What about bonding them together and use LACP on the switch?

 

[sariel1988]

I had thought that this should give each VM more bandwidth. Each guest VM hosts several web services that use quite a bit of bandwidth. When you say bond, is something I can do in the WebAPI or with commands from the shell? Would I benefit more by bonding all NICs together, or by having a dedicated bridge for each NIC?

 

[LnxBil]

Would I benefit more by bonding all NICs together, or by having a dedicated bridge for each NIC?

If you have bonding support from the switch (LACP) and let's say you have 8x 1 Gb NIC, you can have 8 concurrent 1 Gb connections to your server. This is much more than one NIC can handle. This is also the easiest setup, just bond them together and setup lacp on the switch.

Proxmox VE has a video about this:
https://www.proxmox.com/en/training/video-tutorials/item/bond-configuration

Also, there is a Wiki article:
https://pve.proxmox.com/wiki/Network_Configuration#_linux_bond

And you most probably need to configure it manually (e.g. not via GUI)

 

[sariel1988]

Thanks for the quick reply. This is exactly what I was looking for!