Which component bridges the functionality of the cloud provider to the Kubernetes server?

Which component bridges the functionality of the cloud provider to the Kubernetes server?

• A. Cloud-Controller-Manager
• B. Kube-DNS
• C. Kube-Proxy
• D. API Aggregator

Answer: (A)

The main idea here is how Kubernetes talks to the cloud provider to manage cloud resources for the cluster. The Cloud Controller Manager is the component that runs cloud-specific control loops and communicates with the cloud provider’s API to provision and manage resources such as load balancers, volumes, and node lifecycle actions on behalf of Kubernetes. This is what lets a Kubernetes cluster operate across different clouds by translating Kubernetes desires (like exposing a service or attaching storage) into cloud actions. Other components don’t perform this bridging. Kube-DNS handles name resolution for services inside the cluster. Kube-Proxy manages how traffic is routed to service endpoints from within the cluster. API Aggregator is used for extending the Kubernetes API with additional APIs, not for interfacing with the cloud provider.

The main idea here is how Kubernetes talks to the cloud provider to manage cloud resources for the cluster. The Cloud Controller Manager is the component that runs cloud-specific control loops and communicates with the cloud provider’s API to provision and manage resources such as load balancers, volumes, and node lifecycle actions on behalf of Kubernetes. This is what lets a Kubernetes cluster operate across different clouds by translating Kubernetes desires (like exposing a service or attaching storage) into cloud actions.

Other components don’t perform this bridging. Kube-DNS handles name resolution for services inside the cluster. Kube-Proxy manages how traffic is routed to service endpoints from within the cluster. API Aggregator is used for extending the Kubernetes API with additional APIs, not for interfacing with the cloud provider.