pihole_ad_sync

Synchronize Pihole local dns with Microsoft Active Directory DNS

What does the script do?

• Dumps the DNS entries from the Active Directory database to a file
• Strip the file of any blank lines
• The file is SCPed by PowerShell to my primary Pihole server
• A cron job runs and copies entires from the uploaded file to the custom.list file in etc/pihole/ directory
• It restarts the DNS server in Pihole (a quick process)
• GravitySync (a separate community project) synchronizes the DNS entries between the primary Pihole server and the secondary Pihole server.

Different parts of the script

Variables are set defining the file name, domain name, password (SCP purposes), and the connection string. Note dnscopy is a nonsudo, underprivileged user I created, since I have the password embedded in the file The PowerShell Get-DnsServerResourceRecord cmdlet dumps the DNS entries to the file specified The file is then copied over to the Pihole server

What you need to do

• 1). Replace the variables in the PowerShell script to match your domain, scp user password, and pihole connection properties
• 2). Create a non-privileged user on your Pihole server to use for the file upload
• 3). Replace the path for the home directory in the shell script to match your user created that accepts the upload
• 4). Create a CRON job to run the import.sh script to copy over the DNS entries