###Setp by Step Guide

###Step 1: Configure Metallb load balancer

• To install MetalLB, apply the manifest:

    kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.14.5/config/manifests/metallb-native.yaml

• Defining The IPs To Assign To The Load Balancer Services ###First you need to identify your node IP :

    kubectl get node -o wide

###In order to assign an IP to the services, MetalLB must be instructed to do so via the IPAddressPool CR. ###All the IPs allocated via IPAddressPools contribute to the pool of IPs that MetalLB uses to assign IPs to services.

• vim metal-lb-config.yml

apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
  name: first-pool
  namespace: metallb-system
spec:
  addresses:
  - 172.18.0.1-172.18.0.5
  - fc00:f853:0ccd:e799::/124

• kubectl apply -f metal-lb-config.yml
• MetalLB Installtion Link
  
  • Reference: MetalLB Installation
• MetalLB Configuration Link
  
  • Reference: MetalLB IP Configuration

###Step 2: Install the Nginx Ingress Controller

• Apply the the manifest for Bare metal clusters

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.1/deploy/static/provider/baremetal/deploy.yaml

• Check the configuration of Ingress-Nginx controller

kubectl -n ingress-nginx get all

• To Change the Service from NodePort to LoadBalancer, edit the ingress-nginx-controller service

kubectl -n ingress-nginx edit svc ingress-nginx-controller

###To make sure service is shfited from NodePort to LoadBalancer

kubectl -n ingress-nginx get all

• Bare Metal Ingress-Nginx Controller Link
  
  • Reference: Ingress-Nginx Controller

###Step 3: Apply the Nginx Ingress Resource

• Ingress-Nginx Ressource Template Link
  
  • Reference: Ingress-Nginx Ressource Template

###make sure to populate the correct ingress-nginx class name

kubectl -n ingress-nginx get ingressclass

###to check the ingress resource

kubectl -n app-space get ingress

• To see the more detail about ingress

kubectl -n app-space desribe ingress

• To see the detail about ingress service

kubectl -n ingress-nginx get svc 

• If, you are using Kind Cluster you need to port forward

kubectl port-forward -n ingress-nginx service/ingress-nginx-controller 8080:80

• To check and confirm, Whatever individual Deployment and service is wokring fine using ClusterIP under kind cluster

kubectl get node
###then enter the
docker exec -it prod-worker sh
###Curl <Service IP>:Port

###Note: Customize the ingress resource manifest as per your requirements