An administrator is tasked to install Istio service mesh for the vSphere Kubernetes Service (VKS).

For administrators managing modern application workloads within VMware Cloud Foundation (VCF) 9.0, the vSphere Kubernetes Service (VKS) provides the infrastructure layer required for advanced networking via service meshes. While VKS offers various integrated services, Istio is typically deployed as a manual add-on to the workload clusters to provide advanced traffic management, observability, and security.

The official method for deploying Istio into a VKS-managed cluster is via the istioctl command-line utility. While curl (Option B) is frequently used to download the installation script and binary to the administrator ' s workstation, it does not perform the installation itself. The command that actually executes the logic to deploy the Istio control plane (istiod), configures the necessary Custom Resource Definitions (CRDs), and sets up the required namespaces is istioctl install. In many enterprise environments and documentation contexts, this utility is integrated or utilized as a plugin, often referred to in the context of the kubectl toolset (Option A). This command applies the selected configuration profile (such as ' default ' or ' demo ' ) to the cluster, enabling features like mutual TLS (mTLS) and fine-grained routing policies. In VCF 9.0, ensuring Istio is correctly installed is a prerequisite for implementing Zero Trust security architectures across the SDDC, as it allows for policy-driven communication between microservices running on Supervisor-managed Kubernetes clusters.