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docker-nsd

Docker image for nsd, a static authoritative nameserver.

How to use

Create a zones directory. It will contain the zones data. The example.com zone file will be zones/example.com.zone

The content of the zone file is a DNS zone respecting the standard Bind-Style Zone File Format. You'll find an example in this repository.

Build the container (if not pulled from docker hub)

# docker build -t nsd .

Start the container, binding your zones dir to the container's /etc/nsd/zones dir and exposing the port 53 on tcp and udp. It will automatically generate configuration files for the zones detected in the zones directory.

# docker run -d --name nsd -v $(pwd)/zones:/etc/nsd/zones:ro -p 53:53/udp -p 53:53 nsd

Check that it actually works (example files from this repo are used here):

# dig +short +norecurse test.example.com @localhost
10.0.0.1

If you make changes to the zones content, you can regenerate the config and reload nsd with this command:

# docker exec nsd nsd-reload