S3 To Glacier Lifecycle configuration - preventing billing shock

Question

Hi Team
Is there a way to receive a notification when someone adds a rule in S3 lifecycle configuration to transition objects to Glacier ?

A client configured the rule to reduce S3 costs and had a billing shock due to very large number of small objects.  They are trying to prevent such incident in future.

Accepted Answer

Cloudwatch events gives the option to setup "PutBucketLifecycle" notification.

>{
  "source": [
    "aws.s3"
  ],
  "detail-type": [
    "AWS API Call via CloudTrail"
  ],
  "detail": {
    "eventSource": [
      "s3.amazonaws.com"
    ],
    "eventName": [
      "PutBucketLifecycle"
    ]
  }
}

Other option at more granular level you can try to setup CW alert on Cloudtrail - https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudwatch-alarms-for-cloudtrail.html#cloudwatch-alarms-for-cloudtrail-s3-bucket-activity

Customer can setup a billing alert as well on overall cost across all the services.

S3 To Glacier Lifecycle configuration - preventing billing shock

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