Kubernetes Cookbook - Second Edition

How it works...

When kubeadm init sets up the master, there are six stages:

1. Generating certificate files and keys for services: Certificated files and keys are used for security management during cross-node communications. They are located in the /etc/kubernetes/pki directory. Take kubelet, for example. It cannot access the Kubernetes API server without passing the identity verification.
2. Writing kubeconfig files: The kubeconfig files define permissions, authentication, and configurations for kubectl actions. In this case, the Kubernetes controller manager and scheduler have related kubeconfig files to fulfill any API requests.

 

3. Creating service daemon YAML files: The service daemons under kubeadm's control are just like computing components ...