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Add pihole

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nicolas.dorier
2020-02-27 21:20:43 +09:00
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# Pi-Hole support
[Pi-Hole](https://pi-hole.net/) 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
```bash
BTCPAYGEN_ADDITIONAL_FRAGMENTS="$BTCPAYGEN_ADDITIONAL_FRAGMENTS;opt-add-pihole"
. btcpay-setup.sh -i
```
3. If your server has a firewall, make sure it allow incoming traffic to port `53 (UDP)`.
4. Configure your home router DHCP server to use `192.168.1.2`
From now everytime a device will connect to your local network, they will automatically use pi-hole as a DNS server. Advertisements will go to a black hole for all devices.
## Using the dashboard
Pi-Hole comes with a very nice admin dashboard to monitor its activity.
It is disabled by default. To enable it, you need to configure `PIHOLE_IPSERVER` to the IP of your server:
```bash
PIHOLE_IPSERVER="192.168.1.2"
. btcpay-setup.sh -i
```
If your device is using pi-hole as a DNS server, you should now be able to browse `http://pi.hole/admin` to connect to your dashboard.
You can find the admin password in the logs of pihole:
```bash
docker logs pihole | grep random
```
If the password does not work, you can try to reset the password:
```bash
pihole.sh -a -p
docker restart pihole
```
Then running again
```bash
docker logs pihole | grep random
```
## Adding custom entry to pi-hole dns
You can easily add your local domains to pi-hole.
Imagine you have a NAS (like synology) on your local network with IP `192.168.1.3`, and you want to access it through `synology.lan`.
```bash
local_dns_list="$(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.