Since firmware version 3.0 on the Unifi UDM/UDM Pro, podman is no longer available, so we had to use another method to create a container.

We now use systemd-nspawn to create a container.

There are 3 steps:

1. Create the container.
2. Configure the container.
3. Install Pi-hole in the container.

Create the container

All …

Configuring a Dynamic Domain Name Service (DDNS) on Ubiquiti's UniFi network manager is easy, if you use on of the configured providers that show up in the drop-down service.

I had recently upgraded to UnifiOS version 4.3.6, and finally Cloudflare exists as a selectable entry.

If you are running UDM version under …

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 …

Upgrading Pi-hole is easy:

pihole -up

However, this doesn't work if you're running a Docker container.

docker exec -it pihole pihole -up
Function not supported in Docker images

To get Pi-hole Docker container upgraded, you have to force Docker to pull the latest Pi-hole version and redeploy the container.

docker pull …

Let's Encrypt will issue you free SSL certificates, but you have to verify you control the domain, before they issue the certificates.

The 2 major ways of proving control over the domain:

1. Create a specific page on your webserver that they can reach.
2. Create a temporary DNS TXT record.

I went with option #2, as my web …