Amazon Route 53
Overview
Amazon Route 53 is a scalable DNS and domain name management service. It provides domain registration, DNS routing, and health checking.
Real-life Use Cases
Cloud Architect: Design global, highly available DNS architectures.
DevOps Engineer: Automate DNS record management for blue/green deployments.
Terraform Example
resource "aws_route53_zone" "main" {
name = "example.com."
}
resource "aws_route53_record" "www" {
zone_id = aws_route53_zone.main.zone_id
name = "www"
type = "A"
ttl = 300
records = ["1.2.3.4"]
}
AWS CLI Example
aws route53 create-hosted-zone --name example.com --caller-reference 12345
aws route53 change-resource-record-sets --hosted-zone-id ZONEID --change-batch file://changes.json
Best Practices
Use alias records for AWS resources.
Enable DNS failover for high availability.
Common Pitfalls
Not updating TTLs during migrations.
Misconfigured health checks.
Joke: Why did Route 53 get promoted? It always knew how to resolve issues!
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