I upgraded my Pihole running in Docker last year, adding additional security of DNS over HTTP (DoH):

https://www.nodinrogers.com/post/2025-09-15-pihole6-doh-docker/

However, a short 2 months later, Cloudflare announced the cloudflared proxy-dns command, which allowed DoH to work, would be removed from all new …

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Update April 2026

Cloudflared removed the proxy-dns command from cloudflared in February 2026, so this guide should only be used for historical reference.

New gude, using dnscrypt-proxy is here: https://www.nodinrogers.com/post/2026-04-09-pihole-doh-docker/

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I recently upgraded both of my Pi-Holes to version 6.

Not …

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Update April 2026

Cloudflared removed the proxy-dns command from cloudflared in February 2026, so this guide should only be used for historical reference.

New gude, using dnscrypt-proxy is here: https://www.nodinrogers.com/post/2026-04-09-pihole-unifi-dnscrypt/

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I recently upgraded both of my Pi-Holes to version 6.

Not …

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Why multiple Pi-holes and keeping them in sync

For redundancy, I run two Pi-hole instances on two different hardware devices.

Out of the box, making a change on one Pi-hole means logging into the other Pi-hole and making the same change, so the Pi-Hole instances return the same results.

Not an ideal situation, in case …

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Pi-hole admin page redirect failure

I run two Pi-hole instances for redundancy, on two different hardware devices.

I ran into a small, but annoying, issue when trying to access the web admin page.

When accessing the admin web page, Pi-hole should redirect / to /admin, but it wasn't on just one of my Pi-hole instances. …

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I have a Pi-hole Docker container running on my NAS, but DNS functionality is too important to have a single point of failure.

If something were to happen to my NAS, my home network would have no DNS resolution, which brings the network to it's knees.

I had been using a Raspberry Pi as my second DNS server, running …

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