AWS - Auto Scaling
You configured an Auto Scaling group with an ELB target group, but new instances are not receiving traffic. What is the most likely cause?
You configured an Auto Scaling group with an ELB target group, but new instances are not receiving traffic. What is the most likely cause?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Check ELB and Auto Scaling integration
If instances are not registered with the ELB target group, ELB cannot send traffic to them.Step 2: Evaluate other options
MinSize zero means no instances; region mismatch prevents communication; public IP not required for ELB internal routing.Final Answer:
The instances are not registered with the ELB target group -> Option CQuick Check:
Instances must be registered with ELB target group to get traffic [OK]
Quick Trick: Check instance registration in ELB target group first [OK]
Common Mistakes:
MISTAKES- Assuming public IP is required for ELB traffic
- Ignoring instance registration status
- Confusing region mismatch with availability zone issues
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