Cheat Sheets

Route 53 Cheat Sheet

  • Domain Name System (DNS) service
  • Functionality offered:
    • Domain registration
    • DNS routing
    • Health checking
  • Hosted Zone -> Collection of records
  • 2 Types of Hosted zones
    • Public Hosted Zone -> To route internet traffic to a domain and it’s sub domains
    • Private Hosted Zone -> To route traffic within one or more vpc’s
  • Routing policy -> Determines how user traffic is routed to resources
    • Simple Routing – Default -> All traffic is routed to the single resource available
    • Weighted Routing -> To route traffic based on weightage specified. Say 25,75
    • Failover Routing -> To failover traffic to the passive resource (active/passive failover)
    • Geolocation Routing -> To route traffic based on location of users
    • Geo-proximity Routing -> To route traffic based on location of users and volume of traffic
    • Latency based Routing -> To route traffic based on the latency
    • Multivalue answer -> To route traffic randomly among multiple healthy resources available
  • Supported Record Types:
    • A -> maps domain record to IPv4 address – Eg: awsbutes.com to172.2.3.4
    • AAAA -> maps domain record to IPv6 address – Eg: abc.com to 2001:a1b2:a1b2:0:0:a1b2:1234:1234
    • CNAME -> maps one domain record to another – Eg: support.awsbytes.com to awsbytes.com
    • MX -> Mail servers – > Eg: mail.awsbytes.com
    • DS
    • NAPTR
    • NS
    • PTR
    • SOA
    • SPF
    • SRV
    • TXT
See also  EBS Cheat Sheet