pihole-operator

pihole-operator

Description

PiHole Operator is the solution to the problem of wanting a highly available replicated pihole deployment. It does this by making configuration of pihole done exclusively through kubernetes resource definitions.

Installation

This operator, similar to many others, relies on OLM for installation, and distribution. https://sdk.operatorframework.io/docs/olm-integration/tutorial-bundle/#enabling-olm

# install operator-sdk
wget https://github.com/operator-framework/operator-sdk/releases/download/v1.33.0/operator-sdk_linux_amd64
mv ./operator-sdk_linux_amd64 ./operator-sdk
sudo install ./operator-sdk /usr/local/bin

# install the pihole-operator
operator-sdk olm install
operator-sdk olm status
operator-sdk run bundle ghcr.io/robbert229/pihole-operator/pihole-operator-bundle:v0.1.0

Updating

# update the pihole-operator
operator-sdk run bundle-upgrade ghcr.io/robbert229/pihole-operator/pihole-operator-bundle:v0.1.0

Uninstall

operator-sdk cleanup pihole-operator

Usage

apiVersion: pihole.lab.johnrowley.co/v1alpha1
kind: PiHole
metadata:
  name: pihole-sample
spec:
  # how many replicas should exist in the replica set.
  replicas: 3 
  dns:
    # what upstream servers should the pihole use.
    upstreamServers:
    - "8.8.8.8"
    - "8.8.4.4"
  resources:
    requests:
      cpu: 100m
      memory: 128Mi
  # dnsRecordSelector is a label selector that is used to ensure that the 
  # pihole instance will only pickup configuration that match the given 
  # selector
  dnsRecordSelector: {}

  # dnsRecordNamespaceSelector is a label selector that is used to filter
  # which namespaces the pihole-operator should operate in.
  dnsRecordNamespaceSelector: {}
---
# here we configure the pihole to have a dns record installed.
apiVersion: pihole.lab.johnrowley.co/v1alpha1
kind: DnsRecord
metadata:
  name: dnsrecord-cname-sample
spec:
  # cname allows us to set a cname record.
  cname:
    domain: "pihole.lab.johnrowley.co"
    target: "pihole.infra.lab.johnrowley.co"
---
# here we configure the pihole to have a dns record installed.
apiVersion: pihole.lab.johnrowley.co/v1alpha1
kind: DnsRecord
metadata:
  name: dnsrecord-a-sample
spec:
  # a allows us to set an a record.
  a:
    domain: "pihole.lab.johnrowley.co"
    ip: "123.123.123.123"

Attribution

The code for interacting with the pihole api was sourced from Ryan Wholey's excellent terraform provider.