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Route 53

1. How Route53 works?

• Intro
  • DNS webservice
  • functionalities
    • domain registration
    • DNS routing
    • health checking
• Domain Registration
  • You choose a domain name and confirm that it’s available
  • You provide names and contact information for the domain owner and other contacts
  • Route 53 automatically makes itself the DNS service for the domain by doing:
    • create a hosted zone that has the same name as your domain
    • Assigns a set of four name servers to the hosted zone. When someone uses a browser to access your website, such as www.example.com, these name servers tell the browser where to find your resources, such as a web server or an Amazon S3 bucket.
    • Gets the name servers from the hosted zone and adds them to the domain.

2. Concepts

• Hosted Zone
  • A container for records
    • include info about how you want to route traffic for a domain and all of its subdomains
    • It has the same name as domain
• Records
  • Created in your hosted zone
  • For routing traffic to your resources
  • Each record includes information about how you want to route traffic for your domain
    • Name
    • Type
    • Value
• Name server
  • Route53 will assign a set of 4 name servers to the hosted zone
  • name server tell the accessor (browser) where to find your resources
• Domain Name System Concepts
  • Alias Record
    • Record you create to route traffic to AWS resources
  • subdomain
    • A domain name that has one or more labels prepended to the registered domain name. For example, if you register the domain name example.com, then www.example.com is a subdomain. If you create the hosted zone accounting.example.com for the example.com domain, then seattle.accounting.example.com is a subdomain.

3. Working with Hosted Zones

https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/hosted-zones-working-with.html

4. Routing Traffic for subdomains

https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-routing-traffic-for-subdomains.html

• Option 1:
  • Create records in the hosted zone for the doamin
  • we could create a record named test.example.com in the example.com hosted zone
• Option 2:
  • Create a hosted zone for the subdomain, and create records in the new hosted zone

5. Routing Traffic to AWS Resources

https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-to-aws-resources.html

• The logic is to leverage on AWS PrivateLink for cross vpc connection, create the interface endpoint in your service, and build connection between your VPC and Route53

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