Kubernetes Practical By Samson Tanimawo, PhD Published Oct 18, 2025 4 min read

Multi-Tenancy Policy

Multiple teams; one cluster. Policy.

Isolation primitives

Namespaces: logical separation; same cluster.

Resource quotas: prevent one tenant from consuming all cluster capacity.

Network policies: prevent cross-tenant network traffic.

High-trust tenants share clusters. Internal teams; low risk of mutual interference.

Low-trust tenants get separate clusters. Customers running their own workloads; potential blast radius warrants isolation.

Mid-trust: shared cluster, strict policies, monitoring. Most internal multi-tenancy fits.

Documented trust model: who can deploy here, what isolation is enforced.

Onboarding: per-tenant setup script. Namespaces, RBAC, quotas, network policies.

Quarterly review: tenant list; access audit; policy compliance.

Tenant noisy-neighbour detection. Per-tenant resource consumption monitored.

Cost attribution per tenant. Engineers and finance see their costs.

Annual review: should this still be a multi-tenant cluster? Some tenants outgrow shared environments.