Updated Metallb 0.13.7 Configuration for K8s 1.25

In the new Metallb 0.13.7 configuration for Kubernetes 1.25, there is a new step that needs to be taken before configuring the address pool. You need to enable the ARP (Address Resolution Protocol) to ensure that the load balancer can correctly route traffic between pods.

To enable the ARP, you need to run the following command:

kubectl get configmap kube-proxy -n kube-system -o yaml | \
sed -e "s/strictARP: false/strictARP: true/" | \
kubectl apply -f - -n kube-system

This command fetches the kube-proxy configuration map, updates the "strictARP" option from "false" to "true" and applies the updated map to the kube-system namespace.

Once ARP is enabled, you can apply the new Metallb configuration file by running the following command:

kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.13.7/config/manifests/metallb-native.yaml

This command fetches the Metallb configuration file and applies it to your cluster.

Next, you need to create an IP address pool that Metallb can use to assign IP addresses to services. To do this, you can create a YAML file with the following contents:

apiVersion: metallb.io/v1beta1

kind: IPAddressPool

metadata:

  name: first-pool

  namespace: metallb-system

spec:

  addresses:

  - 172.16.2.80-172.16.2.90

This YAML file creates an IP address pool named "first-pool" in the "metallb-system" namespace. The pool has a range of IP addresses between 172.16.2.80 and 172.16.2.90 that Metallb can use to assign to services.

You can apply this YAML file to your cluster using the following command:

kubectl apply -f <filename>.yaml

With these steps, you have successfully configured Metallb 0.13.7 for Kubernetes 1.25 and set up an IP address pool that Metallb can use to assign IP addresses to services. This will help you improve the load balancing capabilities of your Kubernetes cluster and make it more scalable and reliable.

Updation for the below setup

https://www.adminz.in/2022/01/setting-up-metallb-load-balancer-with.html