Docker Pi-hole Custom DNS

Facilitate Pi-hole DNS entry automation for Docker services efficiently with docker-pihole-customdns. Simplify the management process, ensuring seamless integration and reduced manual effort.

Perfect for use when running your services behind a proxy such as Traefik or nginx. Instead of manually adding and removing DNS entries for your self-hosted Docker applications in Pi-hole, specify the domain to use in a label on your container and let Docker Pi-hole Custom DNS create the DNS entry for you.

Supports

• DNS A record management
• DNS CNAME record management
• Up to two Pi-hole DNS servers

Docker Image

docker pull download.noyes.uk/davidnoyes/docker-pihole-customdns:latest

(Images hosted by ghcr.io with a custom domain)

OS / Arch

• linux/amd64
• linux/arm/v7
• linux/arm64

Docker Usage

docker run --name docker-pihole-customdns -d --restart=unless-stopped -v /var/run/docker.sock:/var/run/docker.sock:ro -e DPC_PIHOLE_URL=http://pi.hole -e DPC_DEFAULT_TARGET_IP=198.51.100.0 -e DPC_PIHOLE_API_TOKEN=abcdefghijklmnopqrstuvwxyz

Replace the values for DPC_PIHOLE_URL, DPC_DEFAULT_TARGET_IP & DPC_PIHOLE_API_TOKEN as appropriate

Docker Label

The conatiner label to be applied to service containers is:

docker-pihole-customdns.domain=

It can be applied in the following way:

docker run -d --name nginx -l docker-pihole-customdns.domain=my-service.int.my-domain.net nginx

Docker Compose

version: "3.8"
services:
  docker-pihole-customdns:
    container_name: docker-pihole-customdns
    image: download.noyes.uk/davidnoyes/docker-pihole-customdns:latest
    restart: unless-stopped
    security_opt:
      - no-new-privileges:true
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    environment:
      - DPC_PIHOLE_API_TOKEN=abcdefghijklmnopqrstuvwxyz
      - DPC_DEFAULT_TARGET_IP=198.51.100.0
      - DPC_PIHOLE_URL=http://pi.hole

Environment Variables

Variable	Description
DPC_PIHOLE_API_TOKEN	Pi-hole API Token.
DPC_PIHOLE_API_TOKEN_2	Second Pi-hole API Token (Optional)
DPC_DEFAULT_TARGET_IP	Default target IP address for the Docker host. The IP address used by the http proxy for all docker services on the host.
DPC_DEFAULT_TARGET_DOMAIN	Default target domain address for the Docker host. The DNS address used by the http proxy for all docker services on the host.
DPC_PIHOLE_URL	Pi-hole URL (e.g. http://pi-hole)
DPC_PIHOLE_URL_2	Second Pi-hole URL (optional)

Binary Usage

Usage of ./docker-pihole-customdns:
  -apitoken string
        Pi-hole API token
  -apitoken2 string
        Second Pi-hole API token (Optional)
  -piholeurl string
        Pi-hole URL (e.g. http://pi.hole)
  -piholeurl2 string
        Second Pi-hole URL (Optional e.g. http://pi.hole)
  -targetdomain string
        Default target domain address for the Docker host
  -targetip string
        Default target IP address for the Docker host

Refrences

Pi-hole DNS API

Pi-hole API token can be obtained here: http://pi.hole/admin/settings.php?tab=api (Where pi.hole will resolve to your Pi-hole instance or replace with your own domain/IP address.)

CustomDNS

CustomCNAME