AWS - Route 53
Given a Route 53 alias record pointing to an ELB, what will happen if the ELB's DNS name changes due to a redeployment?
Given a Route 53 alias record pointing to an ELB, what will happen if the ELB's DNS name changes due to a redeployment?
medium📝 service behavior Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand alias record behavior
Alias records point to AWS resources by ID, not fixed DNS names.Step 2: ELB DNS name changes
Route 53 alias records track ELB resource, so DNS name changes are handled automatically.Final Answer:
Route 53 automatically updates to the new ELB DNS name -> Option CQuick Check:
Alias record auto-updates = Route 53 automatically updates to the new ELB DNS name [OK]
Quick Trick: Alias records track ELB resource, auto-updating DNS changes [OK]
Common Mistakes:
- Assuming manual update needed after ELB redeployment
- Confusing alias with static DNS records
- Thinking Route 53 converts alias to CNAME automatically
Master "Route 53" in AWS
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