Network-wide ad blocking with Pi-hole, Kubernetes, and Raspberry Pi

Prerequisites

1. Set up your Raspberry Pi with a static IP.
2. Install and configure MicroK8s (or any other lightweight Kubernetes distribution) on your Pi.

Install

1. Prepare your Pi's storage

   # On your Pi
   sudo mkdir -p /etc/pihole
   sudo mkdir -p /etc/dnsmasq.d

2. If installing from source, grab the code

   # On your Pi
   CHART="./piholechart"
   
   git clone https://github.com/santisbon/pi-hole-k8s.git && cd pi-hole-k8s
   nano $CHART/values.yaml
   # edit the values

   Or if installing from the repository:

   # On your Pi
   helm repo add santisbon https://santisbon.github.io/charts/
   CHART="santisbon/pihole"

3. Install the Helm chart which will enforce the installation order. Replace parameters with a secure password and the static IP of your Pi if you didn't do it through the values.yaml file. If using MicroK8s type the commands as microk8s helm and microk8s kubectl.

   # On your Pi
   RELEASE=pihole
   NAMESPACE=pihole-n
   
   helm install $RELEASE $CHART \
       -n $NAMESPACE \
       --create-namespace \
       --set webPassword=supersecret \
       --set externalIP=192.168.XXX.XXX \
       --set webPort=8000

4. Configure your router to set Pi-hole as your DNS server.
5. From your desktop, access the web admin interface at http://192.168.XXX.XXX:8000/admin.

Upgrade

helm upgrade $RELEASE $CHART -n $NAMESPACE

Uninstall

helm uninstall $RELEASE -n $NAMESPACE --wait
kubectl delete namespaces $NAMESPACE