PVE on Strato Root-Server with one NIC and 3 Public IP-Adresses

[piepmax]

Hi alltogether,

I've installed PVE successful on my strato root-server.
But now I'm struggling with the proper network configuration.
I have one NIC with 3 public ip-addresses and like to assign my virtual machines to those ip-adressses. Any hint?

Kindly regards
Max

 

[Daniel_Dog]

Are you planning on using Linux or windows?
If you just add vmbr0 to the VM as network interface and configure a static IP address on the VM host with the settings that Strato tells you to use, it should just work.

 

[piepmax]

Maybe both, but primary linux systems.
Would you suggest Routed Configuration or Default Configuration regarding this topic?
https://pve.proxmox.com/wiki/Network_Configuration
Thank you!

 

[Daniel_Dog]

That really depends on weather or not you are planning on sharing a single IP with multiple VMs (since this requires NAT and thus Routed Configuration) or youplan on asigning a single IP to a single VM. (And tthus can just use Default Configuration.)

 

[piepmax]

That really depends on weather or not you are planning on sharing a single IP with multiple VMs (since this requires NAT and thus Routed Configuration) or youplan on asigning a single IP to a single VM. (And tthus can just use Default Configuration.)

Thank you that much! I'll try the default configuration

auto vmbr0
iface vmbr0 inet static
        address 81.169.xxx.xx/32
        gateway 81.169.xx.x
        bridge-ports enp2s0
        bridge-stp off
        bridge-fd 0

Do i have to enter all 3 ip adresses here?

 

[Daniel_Dog]

No, just put the IP address that you want your Proxmox VE host be accessible on.
When adding a VM, add the vmbr0 as network bridge and configure a different IP. (Since the host and VMs cannot share one IP without NATing.)

 

[Daniel_Dog]

Note: configuring the IP on a VM will need to happen on the VM host or if you use Linux, you can use cloud-init.

 

[piepmax]

No, just put the IP address that you want your Proxmox VE host be accessible on.
When adding a VM, add the vmbr0 as network bridge and configure a different IP. (Since the host and VMs cannot share one IP without NATing.)

Thanks! Unfortunately I'm currently not that familiar with networking... But this is a very good help!

 

[Daniel_Dog]

No problem.
When I started with virtuallization, it also was a steep learning curve.

But as long as you set a static IP address (with the settings from your hoster) on your VM host and give the VM host vmbr0 as network bridge, then it should just work.

 

[piepmax]

At the end this excellent article solved my problem : https://noxomix.medium.com/setup-proxmox-in-routed-mode-with-multiple-ips-f55ac41e797
Thanks @Daniel_Dog for your support!