0) Setting Hostnames [Master & Worker Nodes]
sudo hostnamectl set-hostname master.k8s.local
sudo hostnamectl set-hostname worker-one.k8s.local
sudo init 6
1) Update Hostfile [Master & Worker Nodes]
sudo tee -a /etc/hosts <<EOF
192.168.1.10 master.k8s.local
192.168.1.11 worker-one.k8s.local
EOF
2) Disabling Swap [Master & Worker Nodes]
sudo apt-get update
sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
sudo swapoff -a
3) Configure Kernel Modules [Master & Worker Nodes]
cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF
sudo modprobe br_netfilter
sudo modprobe overlay
4) Configure Kernel Parameters [Master & Worker Nodes]
cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
EOF
Apply sysctl params without reboot
sudo sysctl --system
Verify settings
sysctl net.bridge.bridge-nf-call-iptables net.bridge.bridge-nf-call-ip6tables net.ipv4.ip_forward
sysctl net.ipv4.ip_forward
sysctl net.bridge.bridge-nf-call-ip6tables
sysctl net.bridge.bridge-nf-call-iptables
5) Install Container Runtime [Master & Worker Nodes]
sudo apt-get update
sudo apt-get install -y containerd
sudo mkdir -p /etc/containerd
sudo containerd config default | sudo tee /etc/containerd/config.toml
sudo sed -i 's/ SystemdCgroup = false/ SystemdCgroup = true/' /etc/containerd/config.toml
cat /etc/containerd/config.toml
sudo systemctl restart containerd.service
sudo systemctl daemon-reload
sudo systemctl enable --now containerd
sudo systemctl status containerd
sudo containerd config dump
6) Install Kubernetes Management Tools [Master & Worker Nodes]
sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.35/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.35/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl
sudo systemctl enable kubelet
7) Initialization Kubernetes Cluster [Master Node Only]
sudo kubeadm init \
--apiserver-advertise-address=192.168.10.2 \
--pod-network-cidr=192.168.0.0/16 \
--service-cidr=10.30.0.0/16 \
--control-plane-endpoint=master.k8s.local:6443 \
--upload-certs \
--cri-socket /run/containerd/containerd.sock
8) Install Cilium Within Kubernetes Cluster [Master Node Only]
CILIUM_CLI_VERSION=$(curl -s https://raw.githubusercontent.com/cilium/cilium-cli/main/stable.txt)
CLI_ARCH=amd64
if [ "$(uname -m)" = "aarch64" ]; then CLI_ARCH=arm64; fi
curl -L --fail --remote-name-all https://github.com/cilium/cilium-cli/releases/download/${CILIUM_CLI_VERSION}/cilium-linux-${CLI_ARCH}.tar.gz{,.sha256sum}
sha256sum --check cilium-linux-${CLI_ARCH}.tar.gz.sha256sum
sudo tar xzvfC cilium-linux-${CLI_ARCH}.tar.gz /usr/local/bin
rm cilium-linux-${CLI_ARCH}.tar.gz{,.sha256sum}
cilium version
cilium install --version 1.16.2
kubectl get pod -n kube-system
9) Check Cluster Status [Master Node Only]
kubectl cluster-info
10) Scheduling Pods On Master [Master Node Only]
kubectl taint nodes --all node-role.kubernetes.io/master-
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