Update Kubernets Docs

kubernetes/info.md

@@ -1,119 +0,0 @@
-# Kubernetes (Kuber) Documentation
-
-## Control Plane (CP)
-- **CP (Control Plane)**: The central management entity of the Kubernetes cluster.
-- By default, the manager in Kubernetes does not directly handle any containers.
-
-## Kubernetes Manager Components
-- **Control Manager**
-- **Scheduler**
-- **API Server**
-- **etcd (Database)**
-- **Kubelet**
-
-## Kubernetes Worker Components
-- **Kube Proxy**
-- **Kubelet**
-
-## Data Flow
-- **Kube Proxy** and **Kubelet** communicate with the Kubernetes Manager for data handling.
-
-## Administration Tools
-- **kubeadm**: Used for administration commands.
-- **kubectl**: Used to manage nodes and services.
-
----
-
-## Kubernetes Setup
-
-### Step 1: Write Default Config
-1. Generate the default containerd configuration.
-   ```bash
-   containerd config default > /etc/containerd/config.toml
-   ```
-
-### Step 2: Modify Config
-1. Change `systemd_cgroup` to `true`.
-   ```bash
-   vim /etc/containerd/config.toml
-   ```
-2. Restart the containerd service.
-   ```bash
-   systemctl restart containerd
-   ```
-
-### Step 3: Load Required Modules
-1. Load necessary kernel modules.
-   ```bash
-   modprobe br_netfilter overlay
-   lsmod | grep overlay  # To verify the overlay module is loaded
-   ```
-2. Add the modules to load at boot.
-   ```bash
-   vim /etc/modules-load.d/modules.conf
-   ```
-   Add the following lines:
-   ```
-   br_netfilter
-   overlay
-   ```
-
-### Step 4: Enable IPv4 Forwarding
-1. Update Config File
-   ```bash
-    sed -i 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/' /etc/sysctl.conf && sysctl -p
-   ```
-
-
-### Step 5: Install Required Packages
-1. Install necessary packages.
-   ```bash
-   sudo apt install ca-certificates curl apt-transport-https conntrack -y
-   ```
-
-### Step 6: Install Kubernetes Components
-1. Add Kubernetes keyring.
-   ```bash
-   curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
-   ```
-2. Add Kubernetes to the sources list.
-   ```bash
-   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
-   ```
-3. Update package list and install Kubernetes components.
-   ```bash
-   sudo apt-get update
-   sudo apt-get install -y kubelet kubeadm kubectl
-   ```
-4. Hold the package versions.
-   ```bash
-   sudo apt-mark hold kubelet kubeadm kubectl
-   ```
-5. Enable and start kubelet.
-   ```bash
-   sudo systemctl enable --now kubelet
-   ```
-
-### Step 7: Setup Network Protocol
-1. Initialize the Kubernetes cluster.
-   ```bash
-   kubeadm init --apiserver-advertise-address <ip-interface> --pod-network-cidr 10.244.0.0/16
-   ```
-2. Apply the Flannel CNI plugin for network management.
-   ```bash
-   kubectl apply -f https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml
-   ```
-3. Configure kubectl for the current user.
-   ```bash
-   mkdir -p $HOME/.kube
-   sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
-   sudo chown $(id -u):$(id -g) $HOME/.kube/config
-   ```
-
-### Step 8: Generate Join Command
-1. Generate the command to join worker nodes to the cluster.
-   ```bash
-   kubeadm token create --print-join-command
-   ```
-
-This command will print out a token and the complete command to be used on worker nodes to join them to the cluster.

kubernetes/information.md

@@ -0,0 +1,25 @@
+# Kubernetes (Kuber) Documentation
+
+## Control Plane (CP)
+- **CP (Control Plane)**: The central management entity of the Kubernetes cluster.
+- By default, the manager in Kubernetes does not directly handle any containers.
+
+## Kubernetes Manager Components
+- **Control Manager**
+- **Scheduler**
+- **API Server**
+- **etcd (Database)**
+- **Kubelet**
+
+## Kubernetes Worker Components
+- **Kube Proxy**
+- **Kubelet**
+
+## Data Flow
+- **Kube Proxy** and **Kubelet** communicate with the Kubernetes Manager for data handling.
+
+## Administration Tools
+- **kubeadm**: Used for administration commands.
+- **kubectl**: Used to manage nodes and services.
+
+---

kubernetes/instaltion.md

@@ -0,0 +1,67 @@
+
+---
+
+# Containerd and Kubernetes Installation Guide
+
+## 1. Disable Swap
+Turn off swap and disable it permanently.
+
+```bash
+swapoff -a
+sed -i '/swap/d' /etc/fstab
+```
+## 2. Enable Required Kernel Modules
+Create a configuration file to load necessary kernel modules and load them temporarily.
+```bash
+echo -e "overlay\nbr_netfilter" | sudo tee /etc/modules-load.d/containerd.conf
+sudo modprobe overlay
+sudo modprobe br_netfilter
+```
+## 3. Enable IPv4 Forwarding
+Enable IPv4 forwarding in the sysctl configuration and apply the changes.
+```bash
+sed -i 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/' /etc/sysctl.conf
+sysctl -p
+```
+## 4. Configure Containerd
+Generate the default configuration for Containerd and modify it to use systemd as the cgroup driver.
+```bash
+containerd config default | sudo tee /etc/containerd/config.toml
+sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml
+```
+
+## 5. Install Kubernetes
+Add the Kubernetes package repository and install the required packages.
+```bash
+sudo mkdir -p /etc/apt/keyrings
+curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/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:/v1.30/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
+```
+## 6. Enable kubelet
+Enable and start the kubelet service.
+```bash
+sudo systemctl enable --now kubelet
+```
+## 7. Initialize the Kubernetes Cluster
+Initialize the Kubernetes control plane with the specified parameters.
+```bash
+sudo kubeadm init --control-plane-endpoint 192.168.2.100 --apiserver-advertise-address 192.168.2.100 --pod-network-cidr 10.244.0.0/16 | tee kuber-install.log
+```
+## 8. Create Control Plane Join Command
+Create the control plane join command and save it for later use.
+```bash
+sudo kubeadm init phase upload-certs --upload-certs
+
+Copy the output certificate key and run the following command, replacing <CERTIFICATE_KEY> with the copied key.
+
+sudo kubeadm token create --certificate-key <CERTIFICATE_KEY> --print-join-command | tee cp-command.txt
+```
+## 9. Join Control Plane and Worker Nodes
+Use the command from cp-command.txt on your control plane nodes to join them. Additionally, get the join command for worker nodes from kuber-install.log and run it on each worker node.
+
+---
+
+This revised guide provides clear, step-by-step instructions, making it easier to follow and ensuring all necessary actions are covered.