Kubernetes Resources

In Kubernetes, resources are like Lego blocks that represent objects you use to build and manage your cluster. Each Kubernetes resource is an object with metadata (likesuch as names and labels) and a desired state that tellsdefines Kubernetesits whatbehavior, toall doof andwhich are stored in the in etcd store.database. For example, a Pod resource defines how to run a group of containers, while a Service resource manages network access to those containers. Everything you can manage with kubectl or the Kubernetes API - like workloads, storage, or configuration - is a resource, making them essential for defining and controlling your cluster's behavior.

The following command will print out all relevant resources kubectl api-resources

The most relevant resources for the KCNA exam are marked red

Core Resources

• Pod
• Service
• ConfigMap
• Secret
• Namespace
• PersistentVolume
• PersistentVolumeClaim
• ServiceAccount
• Binding
• ComponentStatus
• Endpoints
• Event
• LimitRange
• PodTemplate
• ReplicationController
• ResourceQuota

Workloads

• Deployment
• ReplicaSet
• DaemonSet
• StatefulSet
• CronJob
• Job
• ControllerRevision

Networking

• Ingress
• NetworkPolicy
• IngressClass

RBAC (Role-Based Access Control)

• Role
• RoleBinding
• ClusterRole
• ClusterRoleBinding

Storage

• StorageClass
• CSIDriver
• CSINode
• CSIStorageCapacity
• VolumeAttachment

Admission Control

• MutatingWebhookConfiguration
• ValidatingWebhookConfiguration

API Extensions

• CustomResourceDefinition
• APIService

Authentication and Authorization

• TokenReview
• LocalSubjectAccessReview
• SelfSubjectAccessReview
• SelfSubjectRulesReview
• SubjectAccessReview

Autoscaling

• HorizontalPodAutoscaler

Certificates

• CertificateSigningRequest

Coordination

• Lease

Discovery

• EndpointSlice

Events

• Event

Flow Control

• FlowSchema
• PriorityLevelConfiguration

Node Management

• RuntimeClass

Policies

• PodDisruptionBudget
• PodSecurityPolicy

Scheduling

• PriorityClass