Kubernetes

Table Of Contents

• Objective
• VMs Configuration
• Kubernetes Cluster with Kubeadm
  • Initialization
  • Join
  • Verification
• Deployment
  • Kubernetes Dashboard
  • MetalLB
    • Instalaltion
    • Configuration
  • Kubernetes Ingress Ingix
  • Publisher/Subscriber

Objective

VMs Configuration

• VMs configuration

Kubernetes Cluster with Kubeadm

• Creating a cluster with kubeadm

Initialization

Master Node

kubeadm init

Mitsuke

Join

Worker Node(s)

kubeadm join 192.168.1.4:6443 --token vp8i2t.lzbba9edmkk6yb5t \
        --discovery-token-ca-cert-hash sha256:10e669de8d4518be18a2efb641237f58c97e966d8843398d578048c277f5aeac

Icetea

Covid

Verification

$ kubectl get nodes -o wide

NAME      STATUS   ROLES                  AGE    VERSION   INTERNAL-IP   EXTERNAL-IP   OS-IMAGE             KERNEL-VERSION     CONTAINER-RUNTIME
covid     Ready    <none>                 4d6h   v1.22.2   192.168.1.6   <none>        Ubuntu 20.04.3 LTS   5.4.0-86-generic   docker://20.10.8
ice-tea   Ready    <none>                 4d6h   v1.22.2   192.168.1.5   <none>        Ubuntu 20.04.3 LTS   5.4.0-86-generic   docker://20.10.8
mitsuke   Ready    control-plane,master   4d6h   v1.22.2   192.168.1.4   <none>        Ubuntu 20.04.3 LTS   5.4.0-86-generic   docker://20.10.8

Deployment

Kubernetes Dashboard

• Deploy and Access the Kubernetes Dashboard

kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.3.1/aio/deploy/recommended.yaml

MetalLB

Installation

• Preparation and Installation by manifest

Configuration

• Layer 2 configuration

• Publisher Subscriber : k8s/metallb-configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  namespace: metallb-system
  name: config
data:
  config: |
    address-pools:
    - name: default
      protocol: layer2
      addresses:
      - 192.168.1.240-192.168.1.254