[Solved] You created a scheduled scaling action with this cron expression:cron(0 25 * * ? *)Why does the scaling not trigger as expected? | AWS

AWS - Auto Scaling

You created a scheduled scaling action with this cron expression:
cron(0 25 * * ? *)
Why does the scaling not trigger as expected?

AThe day-of-week field is missing

BThe minute value 0 is invalid

CThe hour value 25 is invalid in cron expressions

DThe cron expression needs only 5 fields

Step-by-Step Solution

Solution:

Step 1: Check the hour field in the cron expression
The hour field is set to 25, but valid hour values are 0 to 23.
Step 2: Understand cron validation rules in AWS
AWS rejects cron expressions with invalid field values, so the scaling action won't trigger.
Final Answer:
The hour value 25 is invalid in cron expressions -> Option C
Quick Check:
Hour must be 0-23 in AWS cron [OK]

Quick Trick: Check cron field ranges; hours max 23 [OK]

Common Mistakes:

MISTAKES

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