Patch production EC2 instances and reboot them.
Run the work only during a low-usage period.
Which feature is most appropriate?
Create a Systems Manager Maintenance Window and schedule the patch or automation task within it.
Detailed explanation
DNS TTL does not control Systems Manager execution time.
DNS TTL does not control Systems Manager execution time.
CDN cache operations do not schedule EC2 maintenance.
CDN cache operations do not schedule EC2 maintenance.
Repeated restarts harm availability and do not define an approved window.
Repeated restarts harm availability and do not define an approved window.
A maintenance window restricts Run Command or Automation tasks to an approved time range.
A maintenance window restricts Run Command or Automation tasks to an approved time range.
Check official documentation
Compare the following points with the official documentation.
Systems Manager Maintenance Windowsの公式説明を確認する。
What to confirm
メンテナンス時間とState Managerの定期適用を区別できる。
Key points
- Maintenance Window
- Maintenance period
- Reboot
Notes
- Environment: AWS公式SOA-C03試験ガイドとAWS公式ドキュメントの確認
- Confirm current AWS service behavior in the official documentation.
Foundation review
Change control
A window limits disruptive work to an approved period.
Task attachment
The window is useful only when the intended Run Command or Automation task is associated with it.