Adding a second Proxmox server

[WesT]

I am going to be adding a second proxmox server to my existing setup. In my current setup I have multiple private IP subnets that I use for the different test network configurations. For example, a couple different AD, ldap, etc networks for testing things out. They are all self contained in proxmox and routed internally via pfsense if they need to talk to each other.

With adding a second proxmox server, I am not sure what is the next best step for extending these to the other box. My plan is to put them in a cluster together (Eventually I will get a third). I would appreciate it if someone could point me in the direction of some good resources to research further. I have read how to configure the cluster itself, but I am looking for the internal networking aspect.

Can I trunk these networks between the two?

One network per NIC and just connect between them?

Or should I just try keep each network isolated to just the one server?

 

[pabernethy]

To get your cluster started you likely want a dedicated network between the nodes. It needs no management whatsoever, so no pfSense, DHCP, DNS or anything. It will serve as your corosync network. Corosync is rather sensitive to latency, so you want to keep it as low as possible. And with no other service running over that net, there's nothing to do for pfSense, anyway. Otherwise the new node needs a very similar setup as the first. You want it to be able to access any shared storage and probably be accessible from whatever network is relevant to your use case (a certain LAN or the internet). Look at the wiki for an introduction.

 

[WesT]

Thanks, I think I understand setting up a cluster and we’ll find enough out soon enough.

I am looking for best practices for extending my internal networks (vmbr1, vmbr2). Between the different modes in the cluster.

 

[boopzz]

get a cheap switch which is managed and can handle VLANs. Have both your cluster members trunked down to the switch and then either have one bridge that is VLAN aware (I have this). Or have a bridge per network and then attach that via the vlan tag

 

[promoxer]

How does this get setup?
I just setup another physical proxmox server, is there a way to add it to my current proxmox interface so that I can control both from 1 interface?

 

[Dunuin]

How does this get setup?
I just setup another physical proxmox server, is there a way to add it to my current proxmox interface so that I can control both from 1 interface?

You need 3+ machines. Either 3+ full PVE nodes or 2+ PVE nodes + 1 something else as qdevice.
Everything else will be unreliable.