Simple Routing Policy: A Comprehensive Guide with Example

What is Simple Routing?

Simple Routing Policy is one of the routing policies offered by Amazon Route 53, a scalable domain name system (DNS) web service. It is the most basic and straightforward routing policy.

Simple routing allows you to configure standard DNS records without employing any advanced Route 53 routing features like weighted or latency-based routing. In the case of basic routing, you typically direct traffic to a single resource, such as a web server hosting your website.

This type of routing policy can be applied to records within a private hosted zone. When opting for the Simple routing policy within the Route 53 console, you cannot create multiple records with the same name and type. However, you have the option to specify multiple values within the same record, such as multiple IP addresses. (For alias records configured with Simple routing, only one AWS resource or one record in the current hosted zone can be specified.) If you provide multiple values in a record, Route 53 will return all of them to the recursive resolver in a random order. The resolver, in turn, relays these values back to the client, such as a web browser, that initiated the DNS query. The client then selects a value and resubmits the query.

It’s important to note that with the basic routing policy, although you can specify multiple IP addresses, these IP addresses are not subject to health checks.

Simple Routing

Here’s an example of a Simple Routing Policy:

Scenario

Suppose you have a simple website hosted on Amazon S3, and you want to associate a domain name, www.example.com, with this S3 bucket.

Configuration:

1. You create a hosted zone for the domain name “example.com” in Amazon Route 53.
2. Inside the hosted zone, you create a DNS record for the subdomain “www” and associate it with the S3 bucket’s endpoint, such as “example-bucket.s3.amazonaws.com.”
3. You configure the DNS record with a Simple Routing Policy, which means that all traffic directed to www.example.com will be routed to the S3 bucket’s endpoint.

Example Scenario:

1. A user types “www.example.com" into their web browser.
2. The user’s DNS resolver queries the DNS servers, including Amazon Route 53’s servers.
3. Route 53 responds to the query with the IP address of the S3 bucket’s endpoint associated with “www.example.com."
4. The user’s browser uses this IP address to fetch the website’s content directly from the S3 bucket.
5. The user can now view the website hosted on Amazon S3.

In this example, the Simple Routing Policy directs all incoming traffic for “www.example.com" to the specified resource (the S3 bucket). This is suitable for basic scenarios where you have a single resource to associate with a domain, and no complex routing logic is required.

Reference:

*https://docs.aws.amazon.com/*

*https://aws.amazon.com/*

Are you interested in learning about cloud computing, cybersecurity, and programming? If so, I highly recommend that you check out my YouTube channel. I share regular videos on these topics, providing helpful tips, tutorials, and insights that will help you expand your knowledge and skills.

My videos are designed for anyone who is interested in these topics, whether you are a beginner or an experienced professional. By subscribing to my channel, you will gain access to a wealth of knowledge and insights that will help you stay up-to-date with the latest trends and best practices in cloud computing, cybersecurity, and programming.

So if you’re interested in learning more about these topics, be sure to subscribe to my channel today. Don’t forget to hit the notification bell so that you don’t miss any of my upcoming videos. I look forward to seeing you on the channel!

link: https://youtube.com/c/RaviTejaMureboina

Instagram: https://www.instagram.com/raviteja_mureboina/