Summary
In this chapter, we covered the fundamental architecture and components that make up a Kubernetes cluster. Understanding the control plane, nodes, and their components is crucial for operating Kubernetes effectively.
We looked at how the API server, etcd, controller manager, and schedulers in the control plane manage and maintain desired cluster state. kubelet and kube-proxy run on nodes to communicate with the control plane and manage containers. Getting familiar with these building blocks provides a mental model for how Kubernetes functions internally.
We also explored the main API resources used to deploy and manage applications, including Pods, Deployments, StatefulSets, Jobs, and Services. Pods encapsulate containers and provide networking and storage for closely related containers. Deployments and StatefulSets allow declarative management of pod replicas and provide self-healing capabilities. Jobs enable batch workloads to run to completion. Services enable loose...
