Kubernetes Overview

Kubernetes (which is also referred to as “K8s” and is described at a high-level on the Kubernetes home page) is an open source system for automating deployment, scaling, and management of containerized applications. You will use the command-line tool, kubectl, extensively when you follow the steps that are described in this runbook. The kubectl download and installation steps are described on kubernetes.io.

Minikube is a variant of Kubernetes that runs a single-node cluster inside a virtual machine (VM) on your laptop. See Minikube for the configuration details for Merative Social Program Management (SPM).

For information to the Kubernetes version and version skew support policy see Kubernetes version and version skew support policy.

Some examples are outlined as follows.

In highly-available (HA) clusters, the newest and oldest kube-apiserver instances must be within one minor version.

Example:

kubelet must not be newer than kube-apiserver, and may be up to two minor versions older.

Example:

Example: