AWS - CloudWatch
You want to trigger a CloudWatch alarm only if the average CPU utilization over 10 minutes exceeds 70%. Which metric statistic and period should you use?
You want to trigger a CloudWatch alarm only if the average CPU utilization over 10 minutes exceeds 70%. Which metric statistic and period should you use?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand average over time
To get average CPU over 10 minutes, use Statistic: Average and Period: 600 seconds (10 minutes).Step 2: Evaluate other options
Sum adds values, Maximum picks highest, shorter period gives shorter time window.Final Answer:
Use Average statistic with 600 seconds period for 10-minute average -> Option BQuick Check:
Average + 600s period = 10-minute average metric [OK]
Quick Trick: Use Average statistic with 600s period for 10-minute average [OK]
Common Mistakes:
- Using Sum instead of Average
- Choosing shorter period than 10 minutes
- Using Maximum instead of Average
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