Since cloud-init is an industry standard. the format is very flexible and depends on your particular environment.
You can boot up the OVA and take a look around to answer any Operating Specific questions you may have.
It might help to know that SevOne runs on Redhat 8.1 Operating System and uses Network Manager for networking.
You probably want to take a look at this page:
Networking config Version 2 - cloud-init 26.1 documentation
To help you build the correct metadata yaml file for network settings in your environment.
This guide is a bit specific to VMWare but I don't think you need it if you're just trying to set the network information:
VMware - cloud-init 26.1 documentation
This is kind of the opposite of the "bare bones" you asked for and shows a simple example of almost all the options that I found very helpful:
https://docs.cloud-init.io/en/latest/reference/network-config-format-v2.html#examples
But a barebones SevOne 7.2.0 example you are seeking would look something like this (formatting/spacing may be altered by the forums):
network:
version: 2
ethernets:
<interface name>:
dhcp4: false
addresses:
- <ip address>/<CIDR netmask>
gateway4: <gateway>
nameservers:
addresses: [<dns primary>, <dns secondary>]
renderer: NetworkManager
Here is an example for my particular environment (formatting/spacing may be altered by the forums):
network:
version: 2
ethernets:
eth0:
dhcp4: false
addresses:
- 10.49.11.50/21
gateway4: 10.49.8.1
nameservers:
addresses: [10.49.8.4, 10.49.8.4]
renderer: NetworkManager
Hope that helps get you started!