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AWS::Route53::RecordSet

Routing Policies

  • Simple
  • Single or Multiple value is responded
  • If multiple values is responded, client will be randonly
  • Cannot be associated to health checks
  • Weighted
  • Single value is responded according to a weighted list
  • Can be combined with health checks
  • Geolocation
  • Based on the continent or country
  • A default routing can be set for no matches
  • Latency based
  • Return value with lowest latency for the client
  • Can be combined with health checks
  • Failover
  • Primary and Secondary values
  • If the primary record is not healthy, return the secondary record
  • Multivalue Answer
  • Use traffic to multiple values
  • Up to 8 records
  • It's a client-side LB
  • Can be combined with health checks to respond only healthy resources
  • Geoproximity
  • Based on geographic location
  • Route 53 traffic flow feature must be used to configure this policy
  • The bias (like a radius) is how much the traffic is going to a specific resource (1 - 99)

Traffic Flow

  • Visual editor to create routing configuration using existing routing types such as failover and geolocation
  • You save the configuration as a traffic policy and then use it to create one or more policy records.

Traffic Flow

Domain Name

Domain Name

Properties

Type: AWS::Route53::RecordSet
Properties:
  AliasTarget:
    AliasTarget
  CidrRoutingConfig:
    CidrRoutingConfig
  Comment: String
  Failover: String
  GeoLocation:
    GeoLocation
  GeoProximityLocation:
    GeoProximityLocation
  HealthCheckId: String
  HostedZoneId: String
  HostedZoneName: String
  MultiValueAnswer: Boolean
  Name: String
  Region: String
  ResourceRecords:
    - String
  SetIdentifier: String
  TTL: String
  Type: String
  Weight: Integer

AliasTarget

  • CNAME Record
  • Cannot be used for top node domains (zone apex. e.g., example.com)
  • E.g., app.hvitoi.com ->
  • Alias Record
  • Points a hostname to a AWS Resource (expect ec2 dns names)
    • ELB
    • CloudFront
    • API Gateway
    • Elastic Beanstalk
    • S3 Websites
    • VPC Interface Endpoints
    • Route 53 record in the same hosted zone
  • It's specific to Route 53 (it's an extension of DNS functionality)
  • For root and non-root domains
  • Free of charge!
  • Offer native health check
  • It's always A or AAAA
  • E.g., example.com -> awslb.aws.com

TTL

  • TTL (time to live): how long the record will be cached in the client's computer

Type

  • A: hostname to IPv4
  • webserver 192.168.1.1
  • AAAA: hostname to IPv6
  • webserver 2804:14d:1:0:181:213:132:4
  • CNAME: hostname to hostname (aliases)
  • CNAMEs can be created for subdomains only (not example.com)
  • food.example.com eat.example.com,hungry.example.com

  • NS: IP addresses of the servers that can respond to DNS queries for the hosted zone

  • Others: CAA, DS, MX, NAPTR, PTR, SOA, TXT, SPF, SRV