Kubernetes namespace isolation leaves tenants sharing the same control plane, blast radius, and kernel. vCluster gives every tenant a dedicated API server and true isolated Kubernetes without provisioning separate physical clusters.
Shared namespaces create real risks that compound as workload density grows.
A misbehaving tenant can destabilize other workloads. Namespace boundaries do not prevent cluster-wide failures from spreading.
Tenants can observe platform internals, cluster-wide agents, and other tenants' nodes: namespace isolation was never designed for this.
Tenants need cluster-admin to install operators and CRDs. In shared namespaces, that access breaks everyone else.
vCluster virtualizes the Kubernetes control plane itself. Each tenant gets a dedicated API server, etcd, scheduler, and RBAC as a lightweight pod inside your control plane cluster, eliminating shared blast radius without the cost or delay of provisioning separate physical clusters.
Give every tenant a real Kubernetes cluster with full isolation across the control plane, network, and workload runtime, without the overhead of separate physical machines.
Each tenant runs their own API server, etcd, and scheduler as lightweight pods. For production deployments, Private Nodes, dedicated worker nodes with per-tenant CNI and storage, deliver hardware-level isolation. No shared control plane, no shared blast radius: real Kubernetes namespace isolation replaced by real cluster isolation.
Every tenant gets cluster-admin rights within their own environment. Install CRDs, configure RBAC, run operators, without any risk of interfering with neighboring tenants or platform internals.
vNode wraps each workload in its own secure runtime using seccomp, cgroups, namespaces, and AppArmor, preventing container breakout and limiting blast radius with no hypervisor tax, preserving near-bare-metal performance.
Private Nodes are the production default, each tenant receives dedicated physical nodes with their own CNI and CSI. No workloads from other tenants on the same machine, eliminating noisy-neighbor risk entirely.
Every tenant cluster is a fully conformant, CNCF-certified Kubernetes control plane: 100% API compatible. Not a namespace partition or a proprietary abstraction. Real Kubernetes for every tenant.
This isn’t a side project. Behind every vCluster deployment is 5+ years of deep K8s engineering, security hardening, and battle-tested infrastructure work at massive scale.
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Kubernetes namespaces share a single control plane, meaning all tenants share the same API server, etcd, and cluster-wide resources. A misconfigured or malicious tenant can affect others through RBAC escalation, CRD conflicts, or resource exhaustion. There is no kernel boundary between namespaces: only logical partitioning. For workloads requiring genuine isolation, especially in compliance-sensitive or high-density GPU environments, a shared control plane is a structural risk that namespace-level policies cannot fully address.
vCluster gives each tenant a fully dedicated Kubernetes control plane running as a lightweight pod inside your control plane cluster. Every tenant has their own API server, etcd, scheduler, and RBAC. This means a tenant-side failure, misconfiguration, or security event is contained entirely within their environment. The control plane cluster remains unaffected, and other tenants are significantly less exposed, delivering strong cluster-level isolation without the cost of separate physical infrastructure.
Yes. Because each tenant has their own dedicated control plane, they receive full cluster-admin rights within their environment. They can install CRDs, deploy operators, and configure RBAC freely, without any risk of conflicting with other tenants or exposing platform internals. This is one of the most common failure points with namespace isolation, where CRD conflicts across tenants are a routine operational problem.
No. vCluster's tenant clusters run as lightweight pods, not as virtual machines with hypervisor overhead. For dev, test, and trusted-team workloads on Shared Nodes, GPU access is direct and unaffected: the same physical machines serve all workloads. For untrusted or production GPU tenants, Private Nodes are the default, eliminating cross-tenant hardware exposure entirely. When paired with vNode for workload-level isolation, security controls are applied at the kernel layer using seccomp, cgroups, and AppArmor, preserving bare metal GPU performance while adding a meaningful security boundary around each workload.
Yes. Every tenant cluster created by vCluster is a CNCF-certified Kubernetes distribution with 100% API compatibility. Tenants interact with a real Kubernetes cluster, not a namespace partition or proprietary abstraction. This means existing tooling, Helm charts, operators, and CI/CD pipelines work without modification.
vCluster supports a flexible isolation spectrum. Private Nodes, the production default, give each tenant dedicated hardware with their own CNI and CSI. For dev, test, CI/CD, and trusted-team workloads, Shared Nodes maximize density. Private Nodes (production default) eliminate noisy-neighbor GPU contention. Control plane isolation can be extended to VM-level separation for OS-level boundaries. vNode prevents container breakout and limits blast radius. Network isolation is available via hardware-enforced VLANs, VXLANs, and VRFs through Netris integration.
Go beyond namespace isolation with dedicated control planes for every tenant.
