Feature/pihole

[aessing]

Pull Request

Description

Adding Pi-hole, Nebula-Sync and Unbound as applications and have some small changes to Nameserver (Bind).

The idea is to have a whole Home-Nameserver-System

User -> Pi-Hole -> Unbound -> Forwarder (e.g. Quad9 - for Internet DNS resolution)
|-----> Nameserver (Bind - for Local DNS entries)
|-----> Nebula-Sync (for sync to a second Pi-Hole instance for high availability)

Types of changes

What types of changes does your change introduce?

Please put an x in the boxes that apply

• New feature (adds functionality)
• Bugfix (fixes an issue)
• Security (fixes a security issue) | Please have a look at our Security Policy first.
• Code style cleaning or Refactoring (formatting, renaming, restructuring, etc.)
• Documentation Update
• Other (please describe):

Breaking changes

Does this Pull Request cause existing functionality to not work as expected or even break.

Put an x in the boxes that apply

• Yes
• No

How has the changes been tested?

• Deployed and running on my system

Checklist

Thank you for your contribution. Please review the following checklist before submitting your Pull Request.

Please put an x in the boxes that apply

• I reviewed the guidelines for contributing to this repository
• I created an issue, or used an existing issue which is related to this Pull Request
• I have performed a self-review of my own code
• My code builds clean without any errors or warnings
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have added necessary documentation (if appropriate)
• I have added unit tests that prove my fix is effective or that my feature works

[Copilot]

Pull Request Overview

This PR adds three new applications to support a comprehensive Home-Nameserver-System: Pi-hole (DNS sinkhole), Nebula-Sync (Pi-hole synchronization), and Unbound (recursive DNS resolver). The implementation creates a DNS resolution chain where users query Pi-hole, which forwards to Unbound for recursive resolution or to a local Nameserver (Bind) for local DNS entries, with Nebula-Sync providing high availability through Pi-hole instance synchronization.

• Complete Kubernetes deployment manifests for Pi-hole, Unbound, and Nebula-Sync applications
• Configuration templates and sample overlays for customization
• Integration with existing infrastructure (Traefik, cert-manager, Multus networking)

Reviewed Changes

Copilot reviewed 52 out of 52 changed files in this pull request and generated 2 comments.

File	Description
Applications/Pi-hole/*	StatefulSet-based Pi-hole deployment with web interface, DNS filtering, and persistent storage
Applications/Unbound/*	Deployment-based recursive DNS resolver with comprehensive security and performance configurations
Applications/Nebula-Sync/*	Deployment for synchronizing Pi-hole configurations between multiple instances

Comments suppressed due to low confidence (4)

Applications/Unbound/overlay/_SAMPLE/transformers/replicas.yaml:5

• [nitpick] Inconsistent naming pattern. Should be 'unbound-replica-transformer' to match the pattern used in other transformers (e.g., 'unbound-label-transformer').

  name: unbound-replicatransformer

Applications/Pi-hole/overlay/_SAMPLE/transformers/replicas.yaml:5

• [nitpick] Inconsistent naming pattern. Should be 'pihole-replica-transformer' to match the pattern used in other transformers (e.g., 'pihole-label-transformer').

  name: pihole-replicatransformer

Applications/Nebula-Sync/overlay/_SAMPLE/transformers/replicas.yaml:5

• [nitpick] Inconsistent naming pattern. Should be 'nebula-sync-replica-transformer' to match the pattern used in other transformers (e.g., 'nebula-sync-label-transformer').

  name: nebula-sync-replicatransformer

[Copilot]

Duplicate 'CHANGE_ME' placeholder in dnsNames array. Consider removing one or providing a more descriptive placeholder comment.

Suggested change

	# At least one of a DNS Name, URI, or IP address is required.
	dnsNames:
	- CHANGE_ME
	- CHANGE_ME
	# At least one DNS Name is required. Add additional DNS names as needed.
	dnsNames:
	- CHANGE_ME # Replace with your primary DNS name
	# - ADDITIONAL_DNS_NAME # Uncomment and replace to add more DNS names