LoadBalance Service for Bare metal / VM Kubernetes : Metallb

I use Metallb for the LoadBalance service of my kubernetes cluster.

helm install metallb --namespace=metallb stable/metallb

apply the configmap that is the default for the chart.

remember that for the Helm chart the configmap name has to be metallb-config, which is different from the metallb documentation.

apiVersion: v1
kind: ConfigMap
metadata:
  namespace: metallb
  name: metallb-config
data:
  config: |
    address-pools:
    - name: default
      protocol: layer2
      addresses:
        - 10.0.14.100-10.0.14.200

I prefer the BGP implementation :

apiVersion: v1
kind: ConfigMap
metadata:
  namespace: metallb
  name: metallb-config
data:
  config: |
    peers:
    - peer-address: 10.0.14.1
      peer-asn: 64501
      my-asn: 64500
    address-pools:
    - name: default
      protocol: bgp
      addresses:
      - 10.0.12.128/25

I peer the BGP peers with the Fortigate firewall which is 10.0.14.1 :

config router bgp
    set as 64501
    set router-id 0.0.0.1
    config neighbor
        edit "10.0.14.11"
            set remote-as 64500
        next
        edit "10.0.14.12"
            set remote-as 64500
        next

        ... (and the remaining nodes)

        next
    end
    config redistribute "connected"
    end
    config redistribute "rip"
    end
    config redistribute "ospf"
    end
    config redistribute "static"
    end
    config redistribute "isis"
    end
    config redistribute6 "connected"
    end
    config redistribute6 "rip"
    end
    config redistribute6 "ospf"
    end
    config redistribute6 "static"
    end
    config redistribute6 "isis"
    end
end

do not forget to open the firewall rules then.

reference for the Helm chart :

https://hub.helm.sh/charts/stable/metallb