What is Kubernetes?
A CNCF product written by Google, to manage containers.
Why We need Kubernetes?
The increasing scalbility of containers could be hard to managed
How Kubernetes works?
kubuctl as clients/users, manager nodes(APIservice, controller manager, scheduler,store) to manage the workers nodes via apiservice, worker nodes(kubelet, container/docker, kubeproxy) run pods
What is Pods?
A basic managed unit of one service. Can run container(s) inside pods. The K8S will always runs the pods in desired states and numbers.