Creating a Kubernetes Cluster using Kubeadm

Creating a kubernetes cluster using kubeadm 1.26.0

Tom Cruise

Creating a Kubernetes cluster using kubeadm version 1.26.0-00

In this blog, you wil learn how to create a single head kubernetes cluster using kubeadm. It is community-supported independent tool. It is mainly to become the primary tool to build a Kubernetes cluster.  The kubeadm is a tool that helps you to create a single host or multiple host Kubernetes cluster in your on-premises or cloud environments.

Pre-requisite: 
OS: Mac/Linux(Debian, Ubuntu, CentOS)

RAM: Minimum 2GiB or more per system (Recommended 8GiB)

CPUs: 2Cpus on the machine

Dependency: CRI & Calico

Environment: Public or Private cloud/On-Premises/ LapTop/Macbook 
 

Instructions

Log into the server and run the following commands with root mode.

# update and upgrade the system

$ apt-get update && apt-get upgrade -y

and follows the instruction, select "yes" option during the package upgrades and make sure that all other dependencies are installed. i.e wget, curl, vim/nano.

$ apt install curl apt-transport-https vim git wget gnupg2  software-properties-common lsb-release ca-certifictes uidmap -y

To run the kubernetes cluster, you need the container environment such as containerd, cri-o and Docker on older clusters. we are using containerd which is commonly used by our community and cloud providers.

Install the kubeadm 

$ apt-mark unhold kubeadm kubelet kubectl

$ apt-get install -y kubeadm=1.26.0-00 

$ apt-mark hold kubeadm 

Drain the node(CP) using kubectl

$kubectl drain node <control_plane-node_name> 

$kubeadm upgrade plan

$ kubeadm upgrade apply 1.26.0-00

Equidem impedit officiis quo te. Illud partem sententiae mel eu, euripidis urbanitas et sit. Mediocrem reprimique an vim, veniam tibique omittantur duo ut, agam graeci in vim. Quot appetere patrioque te mea, animal aliquip te pri. Ad vis animal ceteros percipitur, eos tollit civibus percipitur no.