Install kubernets Debian 12 pc in master node and kali and two ubuntu pc will be worker node.
debian pc ip 192.168.1.5
ubuntuone ip 192.168.1.2
ubuntutwo ip 192.168.1.3
kali ip 192.168.1.4
Change host name from /etc/hosts to rename an ip human readable format like 192.168.1.4 kali
Now we can ping 192.168.1.4 using name like ping kali from any network pc, in network pc will should apply this method.
Need to sudo swapoff -a run all pc master and worder node to off the the swap memeory.
It will temporarily off swap memeory. To off the swap memory permanently we should run this command.
`sudo sed -i '/swap/s/^/#/' /etc/fstab`
This mean when pc resteart its see fstab which progrma should run but above command swap memory program will commnet it. So it will run on swap memory.
To check the swap memory status run this command sudo swapon --show
Then set hostname by command line or manually. command line:
sudo hostnamectl set-hostname "your-expected-name-here"
Then to verify run this command:
exec bash
Install containerd in all node as well as master node using
sudo apt isntall containerd
Check the status using sudo systemctl status containerd command if not then run these commands.
sudo systemctl enable containerd
sudo systemctl start containerd
Then create sudo mkdir /etc/containerd in the all nodes.
containerd config default | sudo tee /etc/containerd/config.toml
Create config.toml with the containerd config default settings in /etc/containerd/ folder in the all nodes.
Then restart
sudo systemctl restart containerd
Then need to configure /etc/containerd/config.toml
[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
SystemdCgroup = true
Because K8s wants to use System Control group.
After that edit sudo nano /etc/sysctl.conf for forward ip packet forward betweens k8s network.
sudo nano /etc/sysctl.conf
net.ipv4.ip_forward=1
If the file is not exist then create the file.
Create another file sudo nano /etc/modules-load.d/k8s.conf
and edit
br_netfilter
In Kubernetes, when pods communicate with each other or with the outside world, this module (br_netfilter) helps in forwarding the packets. After that reboot system using
sudo reboot
The next step is the install he packages that are required for Kubernetes. First, we’ll add the required GPG key:
echo "🔑 Step 3: Add Kubernetes GPG key..."
sudo curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/deb/Release.key | sudo gpg --dearmor -o /usr/share/keyrings/kubernetes-apt-keyring.gpg
echo "📦 Step 4: Add Kubernetes apt repository..."
echo "deb [signed-by=/usr/share/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.30/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list > /dev/null
echo "🔄 Step 5: Update package index..."
sudo apt update
echo "⬇️ Step 6: Install kubelet, kubeadm, kubectl..."
sudo apt install -y kubelet kubeadm kubectl
echo "📌 Step 7: Hold packages to prevent unintended upgrades..."
sudo apt-mark hold kubelet kubeadm kubectl
echo "✅ Kubernetes tools installed:"
kubeadm version
kubectl version --client
kubelet --version
After that run this comand
sudo kubeadm init \
--control-plane-endpoint=192.168.11.105 \
--node-name=controller \
--pod-network-cidr=10.244.0.0/16