What is Namespace (Kubernetes)?
A virtual cluster within Kubernetes for isolating resources between teams or environments.
Kubernetes Namespaces provide a mechanism for isolating groups of resources within a single cluster. Resources in one namespace are isolated from resources in another by default. Namespaces enable multi-tenancy: different teams or environments (dev, staging, prod) share a cluster with resource quotas, network policies, and RBAC applied per namespace. Some resources are cluster-scoped (nodes, PVs, CRDs) and not namespaced. Default namespaces: default, kube-system, kube-public.
More Kubernetes Terms
Admission Controller
A Kubernetes plugin that intercepts API requests before objects are persisted.
Auto Scaling
Automatically adjusting the number of compute resources based on demand.
ClusterIP
The default Kubernetes Service type that exposes a service on an internal cluster IP.
ConfigMap
A Kubernetes object for storing non-sensitive configuration data as key-value pairs.
Controller Manager
Kubernetes control plane component running control loops to maintain desired state.
CoreDNS
The default DNS server in Kubernetes clusters for service discovery.
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