EC2/EBS Command Reference Diagnostic Troubleshooter (Part 4)
Use the interactive troubleshooter below to identify your EC2/EBS command scenario, review the verbatim command, understand the trigger condition, and learn what it diagnoses or fixes.
🚨 Step 1: What specific error symptom are you experiencing?
Please click the most accurate description:
Quick Reference Table
| # | Command Category | Verbatim Command | When to Run | What It Does |
|---|---|---|---|---|
| 5 | diagnostic | kpatch list | You have applied kernel live patches using the yum package manager. | Returns a list of the loaded and installed security update kernel live patches. |
| 6 | diagnostic | df -T | You have created an EFS file system and want to check its mount status. | Verifies that the EFS file system is successfully mounted to the directory you specified. |
| 7 | aws-cli | aws ec2 describe-images --region us-east-1 --image-id ami-0abcdef1234567890 | You want to determine the boot mode of an AMI to see if it supports UEFI or Legacy BIOS. | Returns the BootMode field indicating the boot mode of the AMI. |
| 8 | fix | sudo systemctl restart serial-getty@ttyS0 | The screen remains black when attempting to connect to your instance's serial port using the browser-based client. | Restarts the getty service to help resolve issues with connecting to the serial console. |