Page 1: Initial System Preparation
Prepare Ubuntu 22.04 nodes for Kubernetes installation by setting hostnames, configuring networking, disabling swap, and installing essential packages.
🧱 Kubernetes Setup on Ubuntu 22.04
Page 1: Initial System Preparation
This section outlines the foundational steps to prepare your Ubuntu 22.04 nodes before Kubernetes installation. These steps apply to both control plane and worker nodes.
📌 Overview
In this phase, we will:
- Set hostnames and update the
/etc/hostsfile - Configure system timezone and time synchronization
- Disable swap permanently
- Install essential networking and system packages
- Set kernel parameters required by Kubernetes
🖥️ Step 1: Set the Hostname
Each node in your Kubernetes cluster should have a unique, meaningful hostname.
bash
Replace
<your-node-hostname>with something likecp-node-1,worker-1, etc.
🗂️ Step 2: Configure /etc/hosts
Append all node IPs and hostnames to the /etc/hosts file so they can resolve each other within the private network.
bash
⚠️ Update the IPs and hostnames to reflect your actual network configuration.
⏰ Step 3: Configure Timezone and Time Sync (Chrony)
Accurate time sync is critical for cluster coordination.
bash
📦 Step 4: Install Required System Packages
Install tools that are required for further configuration and Kubernetes setup.
bash
🚫 Step 5: Disable Swap (Required by Kubernetes)
Kubernetes does not support swap, so disable it:
bash
We'll automate swap disabling at boot in a later section.
🌐 Step 6: Configure Kernel Networking Parameters
Enable the required networking options for Kubernetes pods and services:
bash
✅ Summary
At this stage, your system is:
- Named and networked correctly
- Using accurate time via Chrony
- Updated and prepared with necessary packages
- Swap is disabled
- Kernel networking is ready for Kubernetes
🟢 Next Step: Install and configure Docker and Kubernetes binaries.
Please confirm if you’d like to continue to Page 2: Docker & Kubernetes Installation, or suggest any edits to this page.