VMware 3V0-24.25 - Advanced VMware Cloud Foundation 9.0 vSphere Kubernetes Service

The errors described—specifically the memcache.go failure, the inability to fetch resource lists for Antrea, and the YAML context error—are classic symptoms of aConfiguration Context mismatch. In VCF 9.0, there are two distinct layers of API interaction: theSupervisor Cluster API(used for management tasks like creating clusters) and theGuest Cluster API(used for deploying workloads within the VKS).

When an administrator upgrades a Supervisor, the API endpoint or the available API groups may change. If the administrator attempts to run kubectl commands against a VKS cluster while their kubeconfig context is still pointing to the Supervisor (or vice versa), the client will encounter " mapping values " errors and " unable to handle request " errors because it is sending requests to an endpoint that does not recognize those specific resource definitions (like Antrea stats in the wrong context). To resolve this, the administrator must ensure they have switched to the correct context using kubectl config use-context < cluster-name > after the Supervisor update to ensure the local client is communicating with the correct API server and version of the Kubernetes binaries.

VKS cluster lifecycle is managed using adeclarative API: you usekubectl with a YAML fileto specify the desired state of the cluster (for example: “how many nodes,” Kubernetes version, sizing, and storage). After the cluster is created, youupdate the YAMLto update the cluster. This is why the correct operational approach is to modify the cluster manifest (cluster.yaml) rather than deleting and redeploying.

Additionally, VKS uses multiple controller layers, whereCluster APIand theVirtual Machine Serviceare responsible for provisioning and managing the lifecycle of the control plane and worker node VMs that make up the VKS cluster. In other words, when you change the declared state for control plane sizing/replica count in the cluster YAML, the platform reconciles to that new state by adjusting the underlying control plane VMs through the supported controllers, instead of requiring disruptive “tear down and rebuild” operations.

So, editing the cluster.yaml to adjust the control plane replica count is the method that matches the documented VKS declarative operations model and controller-driven reconciliation.

VCF 9.0 describesCloud Native Storage (CNS) on vCenteras the component that implements “provisioning and lifecycle operations for persistent volumes.” When provisioning persistent volumes, CNS “interacts with the vSphere First Class Disk functionality to create virtual disks that back the volumes,” and it “communicates with Storage Policy Based Management to guarantee a required level of service to the disks.” This is exactly the storage-policy-to-backed-virtual-disk relationship the question is testing: storage policies (via policy-based management) define requirements, and CNS is the vCenter-side service that applies those requirements while creating and managing the backing storage objects.

In contrast,CSI(including Supervisor CNS-CSI and VKS pvCSI) is the Kubernetes-facing interface/driver used to request and consume storage, but it does not “provide” the vSphere storage policy system; rather, it relies on CNS/CNS-CSI and vCenter services to fulfill provisioning requests. Therefore,vSphere Cloud Native Storage (CNS)is the correct choice.

Cluster API (CAPI) is a foundational Kubernetes sub-project integrated into VMware Cloud Foundation (VCF) 9.0 via the vSphere Kubernetes Service (VKS) . It is designed to bring declarative, Kubernetes-style APIs to cluster creation, configuration, and management. In a VCF environment, the vSphere Supervisor acts as the " Management Cluster, " utilizing CAPI to automate the entire lifecycle of workload clusters (formerly known as TKG clusters).

Instead of requiring manual infrastructure provisioning, CAPI allows administrators to define the desired state of a Kubernetes cluster—including its version, node count, and underlying hardware resources—using YAML manifests. The vSphere Kubernetes Service then works to reconcile the current state of the infrastructure with this defined desired state. This transition to declarative management is a core component of VCF 9.0, as it enables " Kubernetes-on-Kubernetes " orchestration. This ensures that Day 1 operations (deployment) and Day 2 operations (scaling, patching, and upgrading) are consistent, repeatable, and less prone to human error. While other options describe components like cert-manager (Option A), Container Network Interfaces (Option C), or vulnerability scanners (Option D), only Option B accurately identifies CAPI’s role as the engine for automated, policy-driven cluster lifecycle management within the VMware SDDC stack.