Docker and Kubernetes for Java Developers

Kubelet

Kubelet is probably the most important controller in Kubernetes. It's a process that responds to the commands coming from the Master node (we are going to explain what the Master node is in a second). Each node has this process listening. The Master calls it to manage Pods and their containers. The Kubelet runs Pods (which, as you already know, are collections of containers that share an IP and volumes). The Kubelet (https://kubernetes.io/v1.0/docs/admin/kubelet/) is responsible for what's running on an individual machine and it has one job: given a set of containers to run, to make sure they are all running. To rephrase, a Kubelet is the name of the agent and a node is what we call the machine the agent runs on. It's worth knowing ...