Which command applies the configurations from a manifest.yaml file to create or update resources in a Kubernetes cluster?

Which command applies the configurations from a manifest.yaml file to create or update resources in a Kubernetes cluster?

• A. kubectl apply -f manifest.yaml
• B. kubectl create -f manifest.yaml
• C. kubectl run -f manifest.yaml
• D. kubectl update -f manifest.yaml

Answer: (A)

Applying configurations from a manifest to create or update resources in a Kubernetes cluster is done with kubectl apply -f manifest.yaml. This command reads the YAML manifest and reconciles the cluster state to match what’s described. If a resource doesn’t exist, apply creates it; if it does exist, apply updates its fields to align with the manifest. This gives you a single, repeatable way to manage desired state and keeps changes idempotent across runs. Using kubectl create -f manifest.yaml would only create resources and can fail if a resource already exists or you want to update something later. kubectl run is for launching a single pod or container and isn’t designed for applying a full multi-resource manifest. There isn’t a kubectl update command in standard Kubernetes tooling.

Applying configurations from a manifest to create or update resources in a Kubernetes cluster is done with kubectl apply -f manifest.yaml. This command reads the YAML manifest and reconciles the cluster state to match what’s described. If a resource doesn’t exist, apply creates it; if it does exist, apply updates its fields to align with the manifest. This gives you a single, repeatable way to manage desired state and keeps changes idempotent across runs.

Using kubectl create -f manifest.yaml would only create resources and can fail if a resource already exists or you want to update something later. kubectl run is for launching a single pod or container and isn’t designed for applying a full multi-resource manifest. There isn’t a kubectl update command in standard Kubernetes tooling.