NK integrates PowerDNS for in-node authoritative DNS. Business+.
Backend: SQLite / MySQL
PowerDNS uses a backend DB for RRs. NK defaults to SQLite (single file). For large scale, switch to MySQL.
RR ops
api/pdns/record/create with name / type (A/AAAA/CNAME/MX/TXT/SRV/NS/CAA/ALIAS) / content / ttl. CRUD bumps SOA serial.
DNSSEC
PowerDNS supports DNSSEC. NK exposes enable + auto-gen KSK + ZSK + DS record output.
GeoDNS / Anycast
Sync-group nodes across regions run PowerDNS. Clients reach the nearest via BGP Anycast.