Bootstrapping Kubernetes Cluster with kubeadm (Virtual Box + Vagrant)  

🦖 Detail explain step-by-step for beginner.

Reference to K8s documentation - section Bootstrapping clusters with kubeadm.
This tutorial walks you through setting up Kubernetes Cluster on a local machine using Virtual Box.
We will use Vagrant to automate the provisioning of VirtualBox's VM.

                         

LANGUAGE

Before you begin

• 🚧 Cluster diagram: 1 Control Plane & 2 Nodes.
• 🖥️ Machine operating system: Ubuntu 18.04 LTS (Bionic Beaver)
• ⚙️ System resource: 2 GB of RAM and 2 CPUs per machine.
• 📮 Unique hostname, MAC address, and product_uuid for every machines.
• 🧱 No firewall configuration. (Allow all traffic by default)
• 🌐 Full network connectivity between all machines in the cluster (private network, network interface enp0s8 of virtual machines).

Step-by-step tutorial

• ▶️ Provision Virtual Box's VM with Vagrant
• ▶️ Installing a container runtime (containerd) on all virtual machines
• ▶️ Installing kubeadm, kubelet, and kubectl on all virtual machines
• ▶️ Bootstrapping control plane and nodes
• ▶️ Clean up the environment