DNSGateway

Basically I needed two things:

• manage local records for AdGuard Home
• make certbot DNS validation more secure (i.e. don't store API token on every ingress machine)

That's how DNSGateway appeared. Basic features:

• act as an RFC 2136 server
• send update sets to AdGuard Home or Cloudflare
• that's all :)

Related posts:

• DNSGateway + Cloudflare to issue Let’s Encrypt certificates with DNS-01 challenges
• ExternalDNS + AdGuard Home + CoreDNS => ExternalDNS + DNSGateway + AdGuard Home