# Installation Guide - Nginx ingress-controller, MetalLB loadbalancer
###### tags: `Kubernetes`

## Install MetalLB loadbalacer
> Creste namespace
> You will see the metallb-system in namespace

kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.9.3/manifests/namespace.yaml

> Create deployment
> You will see the two pods
> * controller
> * speaker

kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.9.3/manifests/metallb.yaml

> Create sercet

kubectl create secret generic -n metallb-system memberlist --from-literal=secretkey="$(openssl rand -base64 128)"

> Create ConfigMap (metallb_configmap.yml)

apiVersion: v1
kind: ConfigMap
metadata:
  namespace: metallb-system
  name: config
data:
  config: |
    address-pools:
    - name: my-ip-space
      protocol: layer2
      addresses:
      - 192.168.100.240-192.168.100.249

> Note: The IP addresses range need to be aviliable.
> Then create the configmap.

kubectl apply -f metallb_configmap.yml

> After above steps, we finish to install the metallb.

## Install the Ingress-controller
> Create an namespace.yml

# namespace controller
apiVersion: v1
kind: Namespace
metadata: 
  name: controller

> Create namespace

kubectl apply -f namespace.yml

> Use the Helm to install controller

helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
helm install my-release ingress-nginx/ingress-nginx -n controller

> p.s. you can use below cmd to install Helm

snap install helm --classic

## Reference
> http://brobridge.com/bdsres/2019/10/31/%E5%A6%82%E4%BD%95%E8%87%AA%E5%B7%B1%E5%BB%BA%E6%A7%8B-k8s-loadbalancer/
>
> https://metallb.universe.tf/installation/
>
> https://kubernetes.github.io/ingress-nginx/deploy/
>
> https://helm.sh/