Hi,

I'm trying to set up a Single Node OpenShift (SNO) cluster after making changes to the install-config.yaml file. Here's my current configuration:

yaml

apiVersion: v1
baseDomain: sno-master.com
metadata:
  name: sno-cluster       # Cluster name
networking:
  networkType: OVNKubernetes
compute:
  - name: worker
    replicas: 0
controlPlane:
  name: master
  replicas: 1
platform:
  none: {}
pullSecret:
sshKey:

When I run the openshift create cmd, I get the following error:

FATAL: Failed to fetch Cluster Infrastructure Variables
Error: Failed to generate asset "Cluster Infrastructure Variables" because "none" is a UPI platform.

I'm installing this on a preinstalled Red Hat Enterprise Linux Server VM. What should I specify in the platform section to proceed with the installation? Any guidance would be greatly appreciated!

Thanks

------------------------------
Hariprasad R
------------------------------

Hi Hariprasad,

You cannot install OpenShift on top of already deployed RHEL - it is not like installing WebSphere (or any other software) on top of some operating system. OpenShift installs with the CoreOS as the operating system. 
You need any empty VM or bare metal server to deploy OpenShift. The easiest way is to use Assisted Installer (docs here: https://docs.openshift.com/container-platform/4.16/installing/installing_on_prem_assisted/installing-on-prem-assisted.html) or Agent Based Installer (docs here: https://docs.openshift.com/container-platform/4.16/installing/installing_with_agent_based_installer/preparing-to-install-with-agent-based-installer.html)

------------------------------
Witold Wierzchowski
Solution Architect
Cohesive Poland
------------------------------

Original Message:
Sent: Thu March 06, 2025 12:18 AM
From: Hariprasad R
Subject: Issue with SNO OpenShift Installation - UPI platform

Hi,

I'm trying to set up a Single Node OpenShift (SNO) cluster after making changes to the install-config.yaml file. Here's my current configuration:

yaml

apiVersion: v1
baseDomain: sno-master.com
metadata:
  name: sno-cluster       # Cluster name
networking:
  networkType: OVNKubernetes
compute:
  - name: worker
    replicas: 0
controlPlane:
  name: master
  replicas: 1
platform:
  none: {}
pullSecret:
sshKey:

When I run the openshift create cmd, I get the following error:

FATAL: Failed to fetch Cluster Infrastructure Variables
Error: Failed to generate asset "Cluster Infrastructure Variables" because "none" is a UPI platform.

I'm installing this on a preinstalled Red Hat Enterprise Linux Server VM. What should I specify in the platform section to proceed with the installation? Any guidance would be greatly appreciated!

Thanks

------------------------------
Hariprasad R
------------------------------