Route 53

-

 Route 53





Introduction - 
  • Route 53 is the highly available and scalable domain name system provided by AWS
  • Global service
  • AWS manage authoritative (customer can update the DNS record
  • Also domain registrar
  • Only AWS service which 100% availability SLA
  • Affected by client DNS caching (not suitable for blue/green deployment if the client caches DNS queries
  • It is recommended to use DNS names or URLs instead of IPs whenever possible

DNS (Domain Name Service) - 
  • Domain Name System is an internet service that translate the domain name into IP address
  • Ex. - www.Amazon.com     (.com - Top level domain )    ( Amazon - Domain name )

Hosted Zone - 
  • A container for DNS records that define how to route traffic to its domain and its subdomain
  • Hosted zone is queried to get IP from hostname
  • There are two types of hosted zone
  1.  Public hosted zone - 
  • Resolves public domain name
  • Can be queried by anyone on the internet 
  1. Private hosted zone - 
  • Resloves private domain name 
  • Can be only queried from within the VPC

Record Types -
  • A - Maps the domain name to the IPv4 address of the server hosting the domain
  • AAAA - Maps the domain name to the IPv6 address of the server hosting the domain
  • Cname(canonical name) - Maps an alias domain name to the canonical domain name ,Used for  creating aliases for to other domains 
  • MX (Mail Exchange) - Specifies the mail server responsible for recieving email messages on behalf of domain 
  • NS(Name Server) - Specifies the name server for the domain, indicating which server are authoratative for the domain
  • SOA(Start of Authority) - Contains administrative information about the domain including the primary name server, the email of the domain administrator and various timers
 
Routing policies - 
  • Simple routing policy - Allows you to associate the single resourse record set with a route 53 domain name. This is useful when you have a single resource that performs a given function for your domain,such as your web server



  • Weighted routing policy - Allows you to associate multiple resource record set with a route 53 domain name and specify the weight for each record set. Route 53 uses the weight to determine how to distribute traffic among the record sets



  • Latency based routing policy - Allows you to route traffic based on lowest network latency for your end user. You can create latency records for multiple resources and route 53 will route the traffic to the resources with the lowest latency fot the end user



  • Failover routing policy - Allows you to configure active-passive failover configuration. You can create a primary school record set that recieves all traffic under normal condition and secondary record set that recieves the traffic only when primary set is unhealthy                    
      

 
  • Geo location routing policy - Allows you to route traffic based on the geographic location of your users. You can create geolocation records for different geographic location and specify the resource to which traffic should be routed for each location





  • That's all for Route 53 guys please email if you have any corrections, additions, queries or to discuss something about the above points. 
  • EMAIL - mahajanrohit759@gmail.com


 

Comments

Post a Comment

Popular posts from this blog

AWS Instance Store

-
Image
 AWS Instance Store  AWS Instance Store -  Hardware storage directly attached to EC2 instance amd cannot be detached and attached to another instance  Highest IOPS for any available storage Ephemiral Storage (Loses data when instance is terminated, stopped or hibernated) Good to buffer/cache/scratch data/temporary content  AMI created from an instance does not its instance store volume preserved  You can specify the instance store volumes to an instance when you launch the instance. You can't attach instance store volumes to an instance after you’ve launched it. Raid -  Raid 0  Improve performance of a storage volume by distributing reads and write in a stripes across attached volumes  If you add a storage volume you get the straight addition of throughput and iops For high performance applications Raid 1   Improve data availability by mirroring in multiple volumes For critical applications
Read more

AWS Identity and Access Management

-
Image
  IAM Introduction to IAM -  AWS identity and management is a web service that helps you to securely control access to AWS resources You use IAM to control who is authenticated and authorized to use resources IAM allows you to create and manage AWS users and groups , and use permissions to allow or deny their access to AWS resources IAM is a fundamental part of AWS security, as it allows you to implement the principle of least privilege , ensuring that users and applications have only the permissions they need to perform their tasks IAM also provides features such as multi-factor authentication (MFA) , password policies, and access keys to enhance the security of your AWS environment Features of IAM -  IAM User  -   IAM allows you to create and manage users in your AWS account Each IAM user has a unique name and security credentials, which are used to authenticate and authorize their access to AWS resources IAM users have security credentials that are us...
Read more

Elastic Block Storage (EBS)

-
Image
 Elastic Block Storage (EBS) Elastic Block Storage (EBS) -  AWS Elastic Block Storage is a web service that provides block level storage volumes for use with amazon EC2 instances Amazon EBS volumes are highly available and reliable storage volumes that can be attached to any running instance and used like hard drive Amazon EBS allows you to create storage volumes and attach them to EC2 instances   It is used for various databses (both relational and non relational) as well as a wide range of application such as software testing and development  EBS provides a high performance option for many use cases it is directly attached to the instance Features of EBS  -  Amazon Elastic Block Storage  Region and availability zones are multiple physical location for your resources such as instances and EBS volumes Using security groups, you can specify the protocols, ports and source IP ranges that can reach your instances Elastic IP addresses are static IPv4 ...
Read more