Training AWS: Module 7 - Route53
0 likes219 views
This document provides an overview and training on AWS Route 53. It describes the different types of DNS records like A, AAAA, CNAME and Alias records. It explains routing policies like simple, weighted, latency, failover and geolocation routing. Health checks are also covered. The document contains diagrams and descriptions of concepts like TTL, CNAME vs Alias records, and using Route 53 as a registrar versus using a third party registrar. Several sections contain labs for hands-on practice configuring Route 53.
Training AWS: Module 7 - Route53
- 1. AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 1 Training Course Amazon Web Service Day Content Lab Day 1 System Operations on AWS Day 2 Computing on AWS X Day 3 Networking on AWS X Day 4 Storage in AWS (EBS, EFS, Instance Store) X Day 5 Elastic Load Balancing & Auto Scaling Group X Day 6 Storage S3 in AWS X Day 7 Route 53 X Day 8 RDS, Aurora, ElastiCache X Day 9 CloudWatch X Author: Bui Quang Lam Phone/Zalo: +84.0365.635.598 Mail: buiquanglam185@gmail.com
- 2. Goal: Understanding Route 53 in AWS TTL CNAME vs Alias Health Checks Routing Policies Simple Weight Latency Failover Geolocation Multi Value 3rd party domains integration Lab: Create and configuring Route 53 AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 2 Module 7: Route53
- 3. Section introduction AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 3 Module 7: Route53
- 4. AWS Route 53 Overview • Route 53 is a Managed DNS (Domain Name System) • DNS is a collection of rules and records which helps clients understand how to reach a server through URLs • In AWS, the most common records are: • A: hostname to IPv4 • AAAA: hostname to IPv6 • CNAME: hostname to hostname • Alias: hostname to AWS resource AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 4 Module 7: Route53
- 5. Route 53 – Diagram for A Record AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 5 Module 7: Route53
- 6. AWS Route 53 Overview • Route53 can use • Public domain names you own (or buy): application1.mypublicdomain.com • Private domain names that can be resolved by your instances in your VPCs: application1.company.internal • Route53 has advanced features such as • Load balancing (through DNS – also called client load balancing) • Health checks (although limited…) • Routing policy: simple, failover, geolocation, latency, weighted, multi value • You pay $0.50 per month per hosted zone AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 6 Module 7: Route53
- 7. DNS Records TTL (Time to Live) AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 7 Module 7: Route53
- 8. CNAME vs Alias • AWS Resources (Load Balancer, CloudFront…) expose an AWS hostname: lb1-1234.us-east-2.elb.amazonaws.com and you want myapp.mydomain.com • CNAME: • Points a hostname to any other hostname (app.mydomain.com -> blabla.anything.com) • ONLY FOR NON ROOT DOMAIN (aka.somthing.mydomain.com) • Alias • Point a hostname to an AWS Resource (app.mydomain.com -> blabla.amazonaws.com) • Work for ROOT DOMAIN and NON ROOT DOMAIN (aka.mydomain.com) • Free of charge • Native healthy check AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 8 Module 7: Route53
- 9. Simple Routing Policy • Maps a hostname to another hostname • Use when you need to redirect to a single resource • You can’t attach health checks to simple routing policy • If multiple values are returned, a random one is chosen by the client AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 9 Module 7: Route53
- 10. Weighted Routing Policy • Control the % of the requests that go to specific endpoint • Helpful to test 1% of traffic on new app version for example • Helpful to split traffic between two regions • Can be associated with Health Checks AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 10 Module 7: Route53
- 11. Weighted Routing Policy • Control the % of the requests that go to specific endpoint • Helpful to test 1% of traffic on new app version for example • Helpful to split traffic between two regions • Can be associated with Health Checks AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 11 Module 7: Route53
- 12. Latency Routing Policy • Redirect to the server that has the least latency close to us • Super helpful when latency of users is a priority • Latency is evaluated in terms of user to designed AWS Region • Germany may be directed to the US (if that’s the lowest latency) AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 12 Module 7: Route53
- 13. Health Checks • Have X health checks failed -> unhealthy (default 3) • After X healthy checks passed -> healthy (default 3) • Default Healthy Check Interval: 30s (can set to 10s – higher cost) • About 15 healthy checkers will check the endpoint health • -> one request every 2 seconds on average • Can have HTTP, TCP and HTTPS healthy checks (no SSL verification) • Possibility of integrating the health check with CloudWatch • Healthy checks can be linked to Route53 DNS queries AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 13 Module 7: Route53
- 14. Failover Routing Policy AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 14 Module 7: Route53
- 15. Geo Location Routing Policy • Different from Latency based • This is routing based on user location • Here we specify: traffic from the UK should go to this specific IP • Should create a “default” policy (in case there’s no match on location) AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 15 Module 7: Route53
- 16. Geoproximity Routing Policy • Route traffic to your resources based on the geographic location of users and resources • Ability to shift more traffic to resources based on the defined bias • To change the size of the geographic region, specific bias values • Resources can be • AWS resources (specify AWS region) • Non-AWS resources (specify Latitude and Longitude) • You must use Route 53 Traffic Flow (advanced) to use this feature AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 16 Module 7: Route53
- 17. Geoproximity Routing Policy AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 17 Module 7: Route53
- 18. Geoproximity Routing Policy AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 18 Module 7: Route53
- 19. Multi Value Routing Policy • Use when routing traffic to multiple resources • Want to associate a Route 53 health checks with records • Up to 8 healthy records are returned for each Multi Value query • MultiValue is not a substitute for having an ELB AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 19 Module 7: Route53
- 20. Route53 as a Registrar • A domain name registrar is an organization that manages the reservation of Internet domain names • Famous names • GoDaddy • Google Domains • Etc… • And also … Route53 (e.g. AWS)! • Domain Registrar != DNS AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 20 Module 7: Route53
- 21. 3rd Party Registrar with AWS Route 53 • If you buy your domain on 3rd party website, you can still use Route53 • 1) Create a Hosted Zone in Route 53 • 2) Update NS Records on 3rd party website to use Route 53 name servers AWS COURSE DOCUMENT- BUI QUANG LAM - TRAINING 21 Module 7: Route53