AWS - ECS and Fargate
If an ECS service has a min capacity of 3 and max capacity of 6, and current tasks are 6 with CPU at 30%, what will auto scaling do?
If an ECS service has a min capacity of 3 and max capacity of 6, and current tasks are 6 with CPU at 30%, what will auto scaling do?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze CPU usage and scaling limits
CPU is below target, so ECS tries to scale in (reduce tasks).Step 2: Check min and max capacity constraints
Current tasks are at max 6, so scaling in is allowed down to min 3.Final Answer:
Scale in to reduce tasks below 6 -> Option AQuick Check:
Low CPU = scale in (reduce tasks) [OK]
Quick Trick: Low CPU triggers scale in, respecting min capacity [OK]
Common Mistakes:
- Trying to scale out when CPU is low
- Assuming tasks stay at max capacity always
- Thinking ECS stops tasks automatically
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