DNS Records

type	rfc
HTTPS	HTTPS Draft

• HTTPS
  • Apple’s iOS 14
  • Chrom 102+ https://chromestatus.com/feature/5485544526053376
• List of DNS record types
• https://simpledns.plus/help/https-records
• PowerDNS Supported Record Types
• Encrypted SNI/Encrypted ClientHello
• Encrypted SNI

SRV

• _SERVICE._PROTOCOL.example.com
  • SERVICE - ldap
  • PROTOCOL - tcp, udp
  • SRV - priority weight port target
• https://tools.ietf.org/html/rfc2782
• Asterisk
  • srvlookup

_postgresql.sql.example.com TXT "v=PGSQL1;d=mydb;u=myuser"

_sip._udp.sip.example.com SRV "10 100 5060 s1.sip.example.com"

• K8S
  • _port-name._port-protocol.my-svc.my-namespace.svc.cluster-domain.example
  • https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#srv-records

ALIAS

• 行为类似 CNAME
• pdns 可展开 ALIAS
  • expand-alias=yes