Objects

Objects

Node: represents a machine (physical or virtual) that is part of a cluster.

Service Account: Provides an identifier for processes running in a Pod to access the API server and performs actions that it is authorized to.

Resource Quota: Allows defining quotas per namespace for limiting resources, e.g. number of Pods scheduled.

Endpoint: Represents a set of IPs for Pods that match a particular service.

Deployment: Controller which manages the state of the ReplicaSets and the Pods within.

ReplicaSet: Orchestrates individual Pod lifecycle and updates.

Pod: Lowest manageable unit, runs application containers.

DaemonSet: Controller that runs on every node. When a node is added/removed, the controller ensures that the Pod is removed from the node as well.

StatefulSet: Pods deployed using a StatefulSet use the same Pod specification. How this is different than a Deployment is that a StatefulSet considers each Pod as unique and provides ordering to Pod deployment.

batch API Group

• Job: Used to run Pods to completion. If it fails, it will restart until number of completions is reached.
• CronJob: Similar to Linux jobs with the same time syntax.

autoscaling API Group,

• Horizontal Pod Autoscalers (HPA) resources. They automatically scale Replication Controllers, ReplicaSets or Deployments.
• Cluster Autoscaler (CA) adds/removes nodes to the cluster based on inability to deploy Pods or having nodes with low utilization for at least 10 minutes. When using this type of autoscaler, we use cluster-autoscaler commands.

RBAC API Group

Used for access control to API.

• ClusterRole
• Role
• ClusterRoleBinding
• RoleBinding