# NixOS Infrastructure Improvements

This document contains planned improvements to the NixOS infrastructure that are not directly part of the automated deployment pipeline.

## DNS Automation

**Goal:** Automatically generate DNS entries from host configurations

**Approach:** Leverage Nix to generate zone file entries from flake host configurations

Since most hosts use static IPs defined in their NixOS configurations, we can extract this information and automatically generate A records. This keeps DNS in sync with the actual host configs.

**Tasks:**
- [ ] Add optional CNAME field to host configurations
  - [ ] Add `networking.cnames = [ "alias1" "alias2" ]` or similar option
  - [ ] Document in host configuration template
- [ ] Create Nix function to extract DNS records from all hosts
  - [ ] Parse each host's `networking.hostName` and IP configuration
  - [ ] Collect any defined CNAMEs
  - [ ] Generate zone file fragment with A and CNAME records
- [ ] Integrate auto-generated records into zone files
  - [ ] Keep manual entries separate (for non-flake hosts/services)
  - [ ] Include generated fragment in main zone file
  - [ ] Add comments showing which records are auto-generated
- [ ] Update zone file serial number automatically
- [ ] Test zone file validity after generation
- [ ] Either:
  - [ ] Automatically trigger DNS server reload (Ansible)
  - [ ] Or document manual step: merge to master, run upgrade on ns1/ns2

**Deliverable:** DNS A records and CNAMEs automatically generated from host configs