GitOps
GitOps is a practice of managing infrastructure and application delivery declaratively through Git as the single source of truth. KCNA covers GitOps and tools such as Argo CD and Flux in application delivery.
All KCNA Terms
Kubernetes
Kubernetes is an open-source platform for automating the deployment, scaling, and management of containerized applications.
Pod
A Pod is the smallest deployable unit in Kubernetes, wrapping one or more containers that share storage and network.
Control plane
The control plane is the set of Kubernetes components — API server, scheduler, controller manager, and etcd — that manage the cluster's state.
Deployment
A Deployment is a Kubernetes resource that declaratively manages a replicated set of Pods and supports rolling updates.
Service
A Service is a Kubernetes resource that provides a stable network endpoint and load balancing for a set of Pods.
kubectl
kubectl is the command-line tool for interacting with the Kubernetes API to create, inspect, and manage cluster resources.
Container runtime
A container runtime is the software that runs containers on a node, integrated with Kubernetes through the Container Runtime Interface (CRI).
Container Network Interface
The Container Network Interface (CNI) is a specification and set of plugins for configuring network connectivity for containers.
Container Storage Interface
The Container Storage Interface (CSI) is a standard for exposing storage systems to containerized workloads in Kubernetes.
RBAC
RBAC (role-based access control) is the Kubernetes mechanism for granting permissions to users and workloads through roles and bindings.
Service mesh
A service mesh is an infrastructure layer that manages service-to-service communication, adding traffic control, security, and observability.
GitOps
GitOps is a practice of managing infrastructure and application delivery declaratively through Git as the single source of truth.
Helm
Helm is a package manager for Kubernetes that bundles application resources into reusable, versioned charts.
Observability
Observability is the ability to understand a system's internal state from its outputs — metrics, logs, and traces.
CNCF
The CNCF (Cloud Native Computing Foundation) is the open-source foundation that hosts Kubernetes and the broader cloud-native ecosystem.