setting up kubernetes in AWS EC2 instance

I am using this to start setting up my own kubernetes environment. 

https://hbayraktar.medium.com/how-to-install-kubernetes-cluster-on-ubuntu-22-04-step-by-step-guide-7dbf7e8f5f99

sudo apt update && sudo apt upgrade -y

Turn off swap

sudo swapoff -a
sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab

Setup required kernels parameters

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

Setup critical kernel parameters

sudo tee /etc/sysctl.d/kubernetes.conf <<EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF

Reload the system 

sudo sysctl --system

Setup container runtime

sudo apt install -y curl gnupg2 software-properties-common apt-transport-https ca-certificates

Enable docker repository 

sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmour -o /etc/apt/trusted.gpg.d/docker.gpg
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

Install containerd 

sudo apt update
sudo apt install -y containerd.io

containerd config default | sudo tee /etc/containerd/config.toml >/dev/null 2>&1

sudo sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml

Restart containerd 

sudo systemctl restart containerd
sudo systemctl enable containerd

Setup APT repository for kubernetes by setting it to use kubernetes version 1.30 - for more info

echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.30/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg

Install kubeadm and kubelet

sudo apt update
sudo apt install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl

Initialize the cluster 

sudo kubeadm init

kubeadm init would start other core kubectl components that includes kube-apiserver, kube-scheduler, etcd, kubelet, kube-controller-manager.