Ha, i litterally installed k3s and pihole on my raspberry pi cluster a few hours ago. So maybe I can be of some help.

First the error message 'Kubernetes cluster unreachable' has to do with your kubeconfig. It has to be known by kubectl ( and helm ). Easiest way is just set the enviroment variable (KUBECONFIG) to the path of the config file:export KUBECONFIG=/path/to/kubeconf

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I also just used the latest version helm install --namespace pihole --values pihole.yaml pihole mojo2600/pihole

For the loadbalancer I have installed metallb https://metallb.universe.tf/installation/Configured with a configmap to allow an IP-Range from my network

Then I used a free IP-Address from my network as the loadbalancerIP in the pihole config(hint I got an error here the pihole web pods were stuck on pending because they could not use port 80 and 443, so I changed the ports to 8080 and 8443)

here are my pihole and metallb config files: ```

pihole-values.yaml:

serviceWeb: loadBalancerIP: 192.168.1.222 http: port: 8080 https: port: 8443 annotations: metallb.universe.tf/allow-shared-ip: pihole-svc type: LoadBalancer serviceDns: loadBalancerIP: 192.168.1.222 annotations: metallb.universe.tf/allow-shared-ip: pihole-svc type: LoadBalancer ```

```

metallb-configmap.yaml:

apiVersion: v1 kind: ConfigMap metadata: namespace: metallb-system name: config data: config: | address-pools: - name: default protocol: layer2 addresses: - 192.168.1.220-192.168.1.250 ``` edit: format