Define 10G nic for PBS connection only

[skott]

ESXi guy here - moving to Proxmox.

Trying to understand how I can configure PVE to use a dedicated 10G nic for backups only to PBS. I currently have a PVE host with three nic cards. Seems like very simple configuration but can't see how to get it configured.

• 2.5G nic for mangement
• 10G nic for VMs
• 10G nic I want for backup to PBS only

How can I configure PVE to use the last 10G nic for connect to PBS?

Appreciate the help.

 

[waltar]

Define different hostnames in the /etc/hosts's (or your DNS) with that other interface IP's and use that hostnames.

 

[skott]

I was thinking about that, or possibly using VLANs. Thanks for the suggestion and I'll give it a try.

 

[sw-omit]

Also always make sure that the PBS-Nic has an IP and IP-Range that is not the same as the management one.
By default it will first try to reach an IP through a port that is in the same range, so making sure that the ranges don't overlap is key here.
These ranges don't need any gateway and the like, since they will/should be using different ports for their internet-traffic.

Alternative advanced method: If your PBS only has one network-port and needs to be reachable from the same network as management (and not through a router), you can also try getting all the PBS IP's (both PBS itself and the PVE ones) close together and setting them on PVE in a smaller IP-range, but one that does not also contain the PVE management IP.
Example :
PVE1:
Management: 192.168.0.1/24 (GW 192.168.0.254)
PBS: 192.168.0.11/29
PVE2:
Management: 192.168.0.2/24 (GW 192.168.0.254)
PBS: 192.168.0.12/29
PVE3:
Management: 192.168.0.3/24 (GW 192.168.0.254)
PBS: 192.168.0.13/29
PBS1:
Management: 192.168.0.10/24 (GW 192.168.0.254)
/29 gives you (usable) IP's from .9 to .14, so contains the .10 of PBS, which can reach the entire network, since it is still on /24.

 

[skott]

Also always make sure that the PBS-Nic has an IP and IP-Range that is not the same as the management one.
By default it will first try to reach an IP through a port that is in the same range, so making sure that the ranges don't overlap is key here.
These ranges don't need any gateway and the like, since they will/should be using different ports for their internet-traffic.

Alternative advanced method: If your PBS only has one network-port and needs to be reachable from the same network as management (and not through a router), you can also try getting all the PBS IP's (both PBS itself and the PVE ones) close together and setting them on PVE in a smaller IP-range, but one that does not also contain the PVE management IP.
Example :
PVE1:
Management: 192.168.0.1/24 (GW 192.168.0.254)
PBS: 192.168.0.11/29
PVE2:
Management: 192.168.0.2/24 (GW 192.168.0.254)
PBS: 192.168.0.12/29
PVE3:
Management: 192.168.0.3/24 (GW 192.168.0.254)
PBS: 192.168.0.13/29
PBS1:
Management: 192.168.0.10/24 (GW 192.168.0.254)
/29 gives you (usable) IP's from .9 to .14, so contains the .10 of PBS, which can reach the entire network, since it is still on /24.

Great stuff - thanks!