Prerequisites & cluster preparation(15 of 26)

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Verified on SNO (single NIC). Some related tests may be marked not runnable.

Cluster Health Check — Starting Point

Clarify network topology — I.e. software bridges (variant A)

Install and verify NMState Operator

The NMState Operator enables declarative network configuration of the cluster through Kubernetes resources (NodeNetworkConfigurationPolicy). It is required for all VLAN subinterfaces and Linux bridges. Without it, node networking would have to be configured manually and would not persist across reboots.

1OpenShift Console → Ecosystem → Software Catalog → Operators → search for Kubernetes NMState Operator

2Install: namespace openshift-nmstate, update channel stable

3After installation: create the NMState CR (YAML from the Commands/YAML tab)

4Wait until all nmstate pods are Running (~2 min)

5Verify: oc get pods -n openshift-nmstate (all Running)

6Verify: oc get nns → shows the NodeNetworkState of the SNO node

7Check node NIC configuration: oc get nns <nodename> -o yaml

Configure Linux bridges via NMState (Hetzner: variant A — software bridges)

Install OpenShift Virtualization Operator

Set up LVM Storage Operator — storage for VMs

Pull secret, import golden image, prepare SSH keys

Create namespace vmtest and NetworkAttachmentDefinitions

Install MetalLB Operator and configure IP pools (3 options)

MCE + HyperShift for hosted control planes

Deploy MinIO (S3 object storage)

Install MTV (Migration Toolkit for Virtualization) Operator

Install OADP Operator and configure with MinIO (S3)

Install Advanced Cluster Management (ACM) v2.17

Install Kasten K10 (Veeam) Operator and configure with MinIO

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🔧 Prerequisites & cluster preparation(15 of 26)

Prerequisites & cluster preparation(15 of 26)