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btcpayserver-docker/docs/pihole.md

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Pi-Hole support

Pi-Hole is a black hole for internet advertisement. It works as a DNS server which blacklist domains tied to advertisement. If you use it as your main DNS server and it detects your query is trying to resolve a domain belonging to an advertisement company, it will resolve the domain to IP 0.0.0.0, preventing the advertisement to load on any computer using this DNS server.

Note that our pi-hole integration is meant to be used in a local network. Please do not try to use this option on a VPS.

How to use

Let's imagine the local IP of your BTCPay Server is 192.168.1.2.

  1. Connect as root to your server
  2. Add pihole as an option to your docker deployment
BTCPAYGEN_ADDITIONAL_FRAGMENTS="$BTCPAYGEN_ADDITIONAL_FRAGMENTS;opt-add-pihole"
. btcpay-setup.sh -i
  1. If your server has a firewall, make sure it allow incoming traffic to port 53 (UDP).
  2. Configure your home router DHCP server to use 192.168.1.2

From now everytime a device will connect to your local network, they will automatically use pi-hole as a DNS server. Advertisements will go to a black hole for all devices.

Using the dashboard

Pi-Hole comes with a very nice admin dashboard to monitor its activity. It is disabled by default. To enable it, you need to configure PIHOLE_IPSERVER to the IP of your server:

PIHOLE_IPSERVER="192.168.1.2"
. btcpay-setup.sh -i

If your device is using pi-hole as a DNS server, you should now be able to browse http://pi.hole/admin to connect to your dashboard.

You can find the admin password in the logs of pihole:

docker logs pihole | grep random

If the password does not work, you can try to reset the password:

pihole.sh -a -p
docker restart pihole

Then running again

docker logs pihole | grep random

Adding custom entry to pi-hole dns

You can easily add your local domains to pi-hole. Imagine you have a NAS (like synology) on your local network with IP 192.168.1.3, and you want to access it through synology.lan.

local_dns_list="$(docker volume inspect generated_pihole_datadir -f "{{.Mountpoint}}")/lan.list"
# In most cases this will be /var/lib/docker/volumes/generated_pihole_datadir/_data/lan.list
echo "192.168.1.3 synology.lan" >> "$local_dns_list"
pihole.sh restartdns

You can now browse http://synology.lan to access your NAS.