AWS Lambda를 활용해서 자동으로 EBS 스냅샷을 정리해 봤습니다.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ec2:DescribeSnapshots",
                "ec2:DeleteSnapshot"
            ],
            "Resource": "*"
        }
    ]
}

import boto3
from datetime import datetime, timezone, timedelta

ec2 = boto3.client('ec2')
retention_minutes = 10  # 삭제 기준을 분 단위로

def lambda_handler(event, context):
    now = datetime.now(timezone.utc)
    snapshots = ec2.describe_snapshots(OwnerIds=['self'])['Snapshots']

    for snapshot in snapshots:
        snapshot_id = snapshot['SnapshotId']
        start_time = snapshot['StartTime']  # datetime 객체

        age_minutes = (now - start_time).total_seconds() / 60

        if age_minutes >= retention_minutes:
            print(f"Deleting snapshot: {snapshot_id}, Age: {int(age_minutes)} minutes")
            ec2.delete_snapshot(SnapshotId=snapshot_id)

import boto3
from datetime import datetime, timedelta

ec2 = boto3.client('ec2')
retention_days = 7  # N일 이상된 스냅샷 삭제

def lambda_handler(event, context):
    today = datetime.utcnow()
    snapshots = ec2.describe_snapshots(OwnerIds=['self'])['Snapshots']

    deleted = []

    for snapshot in snapshots:
        start_time = snapshot['StartTime'].replace(tzinfo=None)
        age = (today - start_time).days

        if age > retention_days:
            snapshot_id = snapshot['SnapshotId']
            try:
                ec2.delete_snapshot(SnapshotId=snapshot_id)
                deleted.append(snapshot_id)
            except Exception as e:
                print(f"Error deleting snapshot {snapshot_id}: {e}")

    return {
        'statusCode': 200,
        'body': f"Deleted snapshots: {deleted}"
    }