Pi-hole High Availability Setup with Keepalived & Nebula Sync | Dual Raspberry Pi Redundancy

Learn how to build a highly available Pi-hole DNS filtering setup using two Raspberry Pi devices, configured for failover and synchronization. In this video, I walk you through my setup:

✅ Keepalived for automatic failover and floating IP management
✅ Nebula Sync to synchronize Pi-hole configurations, blocklists, and DHCP leases
✅ A resilient design that ensures DNS filtering continues even if one Pi fails

This tutorial is perfect for home lab enthusiasts and network pros who want rock-solid DNS-level ad-blocking with redundancy and reliability.

Here's a video tutorial that shows in more details how to configure this
https://youtu.be/6sznCZ7ttbI?si=V-JGEjU7gx921vm7

🔧 Tools Used:

Raspberry Pi 4 (x2)
Pi-hole
Keepalived
Nebula Sync
📡 Ensure your network stays protected, even during outages. Watch now to set up your Pi-hole cluster the right way!

#PiHole #HomeLab #RaspberryPi #HighAvailability #Keepalived #NebulaSync #DNSFiltering

Видео Pi-hole High Availability Setup with Keepalived & Nebula Sync | Dual Raspberry Pi Redundancy канала Science SideKick