AdGuard Sync

This project will sync entries between a Primary and Secondary AdGuard Home instance using the API.

This is useful if you're dependent on local DNS and want to ensure relative High Availability.

How to Run

AdGuard Sync is packaged as a Docker image and can be ran anywhere with access to your instances, though it is advisable to run this on the same instance that is running your Primary Adguard instance. This makes your primary instance the "source of truth" for local DNS, but allows your secondary instance to stay in sync as a fallback. Once running, set your router DNS to point to both your primary and secondary. You can update the docker-compose.yaml file with your values based on the following:

Once you've updated the file and ensure you have docker and docker-compose installed, run the following in the root directory:

docker-compose up -d

You can check on the status of your newly running pod with:

docker-compose logs

If you'd prefer to utilize Docker without docker-compose, you can use the following command (substituting your values and adding any necessary environment variables):

docker run -d --name adguard-sync --restart=always \
    -e "ADGUARD_PRIMARY=http://192.168.1.2" \
    -e "ADGUARD_SECONDARY=http://192.168.1.3" \
    -e "ADGUARD_USER=admin" \
    -e "ADGUARD_PASS=password" \
    atoy3731/adguard-sync:2.1

NOTE: The container is set to automatically restart when the docker daemon restarts.

Encryption Syncing with Certifications/Keys

If you plan to sync encryption settings across environments and you're using paths for certificates/keys, you must make sure the files exist in both primary and secondary AdGuard instances! Given this, SYNC_ENCRYPTION_SETTINGS is defaulted to false as a safety measure.

Known Issues

Permission Error Running on Raspbian

When running on older versions of Raspbian, you may run into permission issues and see errors like the following in your logs:

Fatal Python error: pyinit_main: can't initialize time
Python runtime state: core initialized
PermissionError: [Errno 1] Operation not permitted

For this, you'll need to update to a newer version of libseccomp2:

wget http://ftp.us.debian.org/debian/pool/main/libs/libseccomp/libseccomp2_2.5.1-1_armhf.deb
sudo dpkg -i libseccomp2_2.5.1-1_armhf.deb