The Kubernetes control plane manages the desired state of cluster resources, including workloads, namespaces, and nodes, while exposing APIs to query and change that state. section 3.2.3
From an observability perspective, it exposes logs, metrics, and emerging trace support but leaves collection, routing, storage, and querying to a separate telemetry strategy. section 3.2.3
Operationally, inspect control-plane signals through:
- System logs from the API server, kubelet, and container runtimes. section 3.2.3
- The metrics endpoint, where API-server metrics expose measures such as admission-controller latency. section 3.2.3
Use the signal-source overview to distinguish control-plane telemetry from data-plane workload signals. section 3.2.3
