Introduction Welcome back to the Kubernetes tutorial series! Now that our base image and local server are ready, it’s time for the real action—Kubernetes cluster setup with Flannel. I'll spin up one Kubernetes master and 4 worker nodes, forming a local Kubernetes cluster that’s ready for real workloads. No more theory—let’s build something real! 🚀 Clone baseimage to k8s-1 as The Kubernetes VM Base Image Before jump on our Kubernetes cluster setup, let's start from my Mac's terminal, clone from Base Image - Rocky 9 as k8s-base: ❯ vmrun clone /Users/geekcoding101.com/Virtual\ Machines.localized/baseimage-rocky9.vmwarevm/baseimage-rocky9.vmx /Users/geekcoding101.com/Virtual\ Machines.localized/k8s-1.vmwarevm/k8s-1.vmx full ❯ sed -i '' 's/displayName = "Clone of baseimage-rocky9"/displayName = "k8s-1"/' "/Users/geekcoding101.com/Virtual Machines.localized/k8s-1.vmwarevm/k8s-1.vmx" Make sure you've stopped the baseimage VM, start the k8s-base VM. The steps here I've mentioned details in Part 2, in short, after above command, we need to rescan in VMFusion and SSH as root into the k8s-base using the IP172.16.211.3 of the base VM, preapre the input file /opt/share_tools/init_data/k8s-1_vm_input.json: { "hostname": "k8s-1", "ip": "172.16.8.11", "subnet": "24", "gateway": "172.16.211.2", "dns1": "172.16.211.100", "dns2": "8.8.8.8", "domain": "dev.geekcoding101local.com", "ansible_key_path": "~/.ssh/ansible_ed25519", "ssh_key_path": "~/.ssh/ssh_ed25519" } Then using VMFusion console to login into the VM, perform below command to generate SSH keys and setup networking: ansible-playbook /opt/share_tools/bin/configure_vm.yml -e "input_file_path=/opt/share_tools/init_data/k8s-1_vm_input.json" Now I can connect from SSH passwordlessly via the new IP 172.16.8.11. Test DNS Please note here is testing our local DNS server to ensure it's working in our Kubernetes cluster setup. But it's not going to replace CoreDNS... Anyway, ensure the DNS server localserver(172.16.211.100) we setup in Part 2 is running. Ensure the 172.16.211.100 is on top of /etc/resolv.conf , should…
Introduction Hey there! Welcome to this Kubernetes tutorial! Ever dreamed of running a real multi-node Kubernetes (K8s) cluster on your laptop instead of settling for Minikube’s diet version? A proper real multi-node Kubernetes environment requires virtual machines, and until last year, VMware Fusion was a paid product—an obstacle for many. I know there are alternatives, like KVM, Oracle VirtualBox, and even Minikube’s so-called multi-node mode ----but let’s be real: I’ve got a beast of a MacBook Pro, so why not flex its muscles and spin up a legit multi-node cluster? 🚀 But great news! On November 11, 2024, VMware announced that Fusion and Workstation are now free for all users! The moment I stumbled upon this announcement, I was thrilled. Time to roll up my sleeves, fire up some VMs, and make this cluster a reality. Kick off my Kubernetes tutorial! Let’s dive in! 🚀 Project Overview My Goal In this series of Kubernetes tutorial, I want to set up a full Kubernetes cluster on my MacBook Pro using VMware Fusion, creating multiple VMs to simulate real-world deployment and practice my DevOps and IaC (Infrastructure as Code) skills. Planned Setup Create a VM as Base VM (Rocky Linux 9) Configure networking Update system packages Disable firewalld Enable SSH passwordless login from local Mac to the base VM Set up zsh, tmux, vim and common aliases Install Miniforge for Python environment management Install and configure Ansible Set up a Local Server Node (localserver) Clone from the above base VM image Create an Ansible script to customize the base VM image withe new…