AWS - Elastic Load Balancing
You configured an ALB with a rule to forward requests with header 'X-App-Version: v2' to target group tg2. However, requests with this header are still going to tg1. What is the likely error?
You configured an ALB with a rule to forward requests with header 'X-App-Version: v2' to target group tg2. However, requests with this header are still going to tg1. What is the likely error?
medium📝 Debug Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Check ALB header routing rules
ALB header matching is case-sensitive for header names and values.Step 2: Identify mismatch in header case
If header name or value case differs, rule won't match, so request goes to default tg1.Final Answer:
Header condition is case-sensitive and mismatched -> Option AQuick Check:
Header routing is case-sensitive = mismatch causes fallback [OK]
Quick Trick: Header names and values are case-sensitive in ALB rules [OK]
Common Mistakes:
MISTAKES- Assuming ALB ignores header case
- Blaming target group health without checking rules
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