Question There is a difference between the number of IP addresses assigned to Pods or EC2 instances and the number of available IP addresses in the subnet. Answer Accordi...
Question I want to know which resource is using a specific IP address assigned in a subnet. Resolution You can identify the resource by following the steps below. [1] ...
Question I need an Amazon SSL certificate for a newly added domain. Is there a way to download the Amazon SSL certificate that is currently in use on AWS or receive it separa...
Issue A public certificate was created and recorded in Route53, but validation failed after 72 hours. Despite repeated attempts, the status remains in Pending. Caus...
The procedure for logging into the account when AWS Root MFA is lost is as follows. Email verification Phone verification (enter the 6-digit number displayed on the web...
Question Currently, the Organization is activated under the Payer account to provide services to multiple linked accounts. I want to centrally manage backups of multiple lin...
Issue The application team is performing deployment work to EFS as usual. However, during the application deployment, a write timeout occurs. Recently, there have been many m...
Create SNS Topic To trigger alarms for IAM User creation/deletion, you must create the topic in us-east-1 as well (because IAM is a global resource). Keep encryption,...
[IAM] MFA再認証時間延長です
金, 6月 13, 2025 で 10:08 午前
Situation After entering the MFA code at initial login, even with continuous activity, the user must re-enter the code after about 30 to 60 minutes. You want to extend this p...
Situation Account A owns the VPC, and Account B owns EC2 instances. You want to connect Account B’s EC2 instances to the VPC owned by Account A, but routing table changes a...