如何配置Route 53将流量路由至EC2及DotEasy域名解析设置

Hey there! Let's break down your questions step by step—this DNS and routing stuff can feel a bit tangled at first, but we'll get you up and running smoothly.

1. Pointing DotEasy's DNS Servers to Route 53 #

First things first: To use Route 53 as your DNS service, you need to update DotEasy's DNS server settings to use the 4 NS records Route 53 gave you. Here's how:

• Log into your DotEasy account, navigate to your domain's DNS management page.
• You'll see fields for "Primary", "Secondary", "Third", and "Fourth DNS Server". Just paste each of the 4 Route 53 NS addresses (like ns-<X>.awsdns-<Y>.<TLD>) into these fields—order doesn't matter, since DNS uses redundant servers.
• Save the changes, and note that DNS propagation can take anywhere from a few minutes to 24 hours (depending on TTL settings). You can verify it's working later with nslookup myapp.example.com or dig myapp.example.com to check if the NS records match Route 53's.

Quick Note on Transferring Your Domain to Route 53 #

Yes, this is totally feasible! The transfer process usually takes 5-7 business days, and it won't disrupt your service if you've already pointed the NS records to Route 53 (which you're doing now). Here's the basic flow:

1. In DotEasy, unlock your domain (most registrars lock domains by default to prevent accidental transfers) and get your transfer authorization code.
2. In the Route 53 console, select "Transfer domain to Route 53", enter your domain and the authorization code, then complete the payment.
3. DotEasy will send you a confirmation email—approve the transfer, and wait for it to finalize. Done!

2. Routing Port 9200 Traffic via Route 53 #

Let's clear up a common misconception first: Route 53 is a DNS service, not a port router. DNS only maps domain names to IP addresses or AWS resources (like ELBs/ECS load balancers)—it doesn't handle port-level routing. That said, here's how to set up the mapping so traffic to myapp.example.com:9200 reaches your EC2 instance (and later your ECS/ELB):

For Your Current EC2 Setup #

• In the Route 53 console, go to your hosted zone for example.com.
• Create a new A record (for IPv4) or AAAA record (for IPv6):
  • Name: myapp (this will make the full domain myapp.example.com)
  • Value: Enter your EC2 instance's public IPv4/IPv6 address
  • TTL: Leave it at the default (300 seconds) or adjust as needed
• Critical: Make sure your EC2 instance's security group allows inbound traffic on port 9200 (either TCP for HTTP/HTTPS, depending on your use case).

For Future ECS/ELB Setup #

When you switch to ECS or an Elastic Load Balancer (ELB):

• If using an ELB (Application Load Balancer is recommended), create an Alias record in Route 53 instead of an A/AAAA record. Alias records are free, automatically update if the ELB's IP changes, and work seamlessly with AWS services.
  • Name: myapp
  • Alias target: Select your ELB from the list of AWS resources
• For ECS, if you're using a load balancer with your cluster, follow the same ELB steps. If you're using ECS service discovery, you can still map myapp.example.com to the service's DNS name via a CNAME record.

You don't need to create a custom zone file for this—Route 53's record creation interface handles all the necessary zone file entries automatically.

3. Configuring https://myapp.example.com:9200 #

HTTPS relies on SSL certificates and your backend service/load balancer handling encrypted traffic—DNS doesn't play a role here, but we need to tie it all together:

Option 1: Directly on EC2 #

• Get an SSL certificate for myapp.example.com (AWS Certificate Manager (ACM) offers free certificates, but if you're using it on EC2, you'll need to download the certificate and key since ACM doesn't let you export them—alternatively, use Let's Encrypt).
• Configure your application or a reverse proxy (like Nginx/Apache) on EC2 to listen on port 9200 using the SSL certificate. This way, when users hit https://myapp.example.com:9200, the EC2 instance serves encrypted traffic directly.

Option 2: Using an ALB (Recommended for Scalability) #

This is the better long-term solution, especially if you're moving to ECS:

• Use ACM to request an SSL certificate for myapp.example.com (ACM integrates seamlessly with ALBs).
• Configure your ALB to listen on port 443 (HTTPS) with the ACM certificate, then forward traffic to a target group pointing to your EC2/ECS tasks on port 9200.
• If you want users to access via :9200 over HTTPS, you can add another listener to the ALB for port 9200 (HTTPS), bind the same SSL certificate, and forward to the same target group.
• Pro tip: If you want to avoid users having to type the port, set up the ALB's 443 listener to forward to port 9200—then users can just visit https://myapp.example.com and it routes to the right port automatically.

Verifying It Works #

Once everything is set up, test with curl -v https://myapp.example.com:9200 or just visit the URL in a browser to confirm the connection is encrypted and reaches your service.

内容的提问来源于stack exchange，提问作者smeeb