pihole-sync

A gitops way to sync two or many PiHoles without having connection between them.

What is synchronized?

This script synchronizes the following data

• Configuration (web password, dns upstream)
• Local DNS
  • DNS Records
  • CName Records
• Groups
• Clients
• Adlist
• Domains List (Allow list & Block list)

Does not sync:

• DHCP

How to install

Follow steps: https://docs.driverlandia.com/books/pihole/page/sincronizacion-de-varios-pihole

Command for export data from "master" PiHole

Inside pihole folder (same level that etc-pihole, etc-dnsmasq.d, var-log-pihole) execute this Command

python3 gravity_sync.py -a export

This command will generate the gravity_changes.json (see the example file). You can specify the name of this file. Commit this file to git repository (git commit & push), make a pull on the second or third (or N PiHole) and then execute

python3 gravity_sync.py -a import

Execution result of git pull & import command on second PiHole

Parameters

Arg	Long Argument	Values	Default	Description
-d	--database		etc-pihole/gravity.db	Path and name of gravity database
-f	--file		gravity_changes.json	Path of file where write/read export/import changes
-a	--action	import export	You need to specify	Action you want to perform
-ug	--upgrade-gravity	y n	n	Execute force upgrade IOC after adding adlist
-cn	--container-name		pihole	Container name of pihole

Automatization

For export changes from master to git, you can add this line to cron

*/15 * * * * cd /docker/pihole/ && python3 gravity_sync.py -a export && git add -A && git commit -m "Autoupdate" && git push 

For import to secondary PiHoles add this line in cron. Command restartdns reload is for reload DNS if file of local DNS has been updated

*/15 * * * * cd /docker/pihole/ && git pull && docker exec -it pihole /bin/bash pihole restartdns reload && python3 gravity_sync.py -a import

Import and if there's a new adlist added, then force gravity update. Be careful, if you check many times at day some list they will ban you for a few days.

*/15 * * * * cd /docker/pihole/ && git pull && docker exec -it pihole /bin/bash pihole restartdns reload && python3 gravity_sync.py -a import -ug y

Password for PiHole

If you use this setupvars.conf the password of PiHole web is admin. Please change this password!! DON'T USE IN PRODUCTION!

Misc

If this project has been useful to you, you can give me a coffee at Paypal