Proxmox-Cluster: Subnet-IP of a VM (Hetzner)

[CRaSH3k]

Hi,

I want to set up a 3-Node-Proxmox-Cluster at Hetzner.
However, there is a question, that I could not solve myself and I hope that you can help me:

Hetzner says, that they are binding Subnet-IPs only to a single Rootserver.
As I want to run several VMs on the cluster (each with its own IP of the subnet), I ask myself
how to solve the following Problem:
When a Node "NodeA" of the Cluster fails and the VMs are migrated to another Node "NodeB", how can
e.g. the VM hosting a website still be reachable afterwards?
As far as I know, the new Node "NodeB" could not handle the IP that was given to the VM, as it is part of the subnet tied to the Node that failed ("NodeA").


Thanks in advance!

 

[bkraegelin]

You could (should) do the following:

- give your VMs private IPs
- set up NAT or reverse proxy for your webs
- set up DNS with very short TTL
- register your public IPs in DNS, reregister on migration
(could be done automatically on HA if you run your own DNS)

hope this helps
Birger

 

[Michel V]

@CRaSH3k did you get something of these options working? What is the best for you?

 

[re-host.eu]

@Michel V use the new vLan Feature at Hetzner You can order a public subnet which then is available to all Servers connected to that vlan.