Securing Kubernetes Cluster: A Guide to API Server Connection with OpenSSL and kubeConfig

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phanindra_sangers

PreRequisites:

1. To demonstrate the working session we need a managed kubernetes cluster like EKS,AKS,GKS or ubuntu machines where kubernetes is installed using kubeadm

2. We will bootstrap the cluster using kubeadm in the ubuntu 22LTS

3. Here I am choosing AWS Cloud provider to launch the ubuntu machines.

4. And here we are using only master node we are not using any worker node

Chapter 1 : BootStrap Kubernetes Cluster Using Kubeadm

1.1 Configure CRI for kubernetes

Running this following commands

cat <<EOF | sudo tee /etc/modules-load.d/containerd.conf
overlay
br_netfilter
EOF