EC2/EBS Conditional Failure Patterns (Part 2)
Data strictly extracted from official AWS troubleshooting documentation. Click the symptom below to get the targeted conditional failure pattern and its consequence.
🚨 Step 1: What specific error symptom are you experiencing?
Please click the most accurate description:
Quick Reference Table
| # | Pattern | Verbatim Conditional Sentence | Trigger Condition | Consequence |
|---|---|---|---|---|
| 5 | if...cannot | "If your instance store-backed instance passes its retirement date, it is terminated and you cannot recover the instance or any data that was stored on it." | Failing to migrate or back up an instance store-backed EC2 instance before its scheduled underlying hardware retirement date passes. | Instance is forcibly terminated and all local data is permanently lost (Visible outage/data loss). |
| 6 | if...no longer | "If the snapshots that are associated with the AMI are deleted from the Recycle Bin, the AMI is no longer recoverable." | Deleting the underlying EBS snapshots associated with an Amazon Machine Image (AMI) from the Recycle Bin before the AMI itself expires. | The AMI is permanently broken and no longer recoverable (Visible failure during launch attempts). |
| 7 | if...otherwise...fails | "If you use targeted Capacity Reservations in your EC2 Fleet, there must be enough Capacity Reservations to fulfil the target On-Demand capacity, otherwise the launch fails." | Specifying targeted Capacity Reservations in an EC2 Fleet configuration when there is insufficient unused reserved capacity to meet the request. | EC2 Fleet instance launch fails (Visible failure). |
| 8 | if...unable to | "Grub is typically installed on only one device in a RAID array, and if one of the mirrored devices fails, you may be unable to boot the operating system." | A device failure occurs on the specific mirrored volume in an EBS RAID 0 array that happens to house the Grub bootloader. | Unable to boot the EC2 instance's operating system (Visible outage). |