AWS - EC2 Fundamentals
You tried to connect to your EC2 instance using SSH but got a permission denied error. Which of these is the most likely cause?
You tried to connect to your EC2 instance using SSH but got a permission denied error. Which of these is the most likely cause?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Check SSH private key file permissions
SSH requires private key files to have strict permissions (e.g., 400). Too open permissions cause denial.Step 2: Understand other options
While stopped instances or no public IP prevent connection, the error message differs. Deleted key pairs do not affect existing instances.Final Answer:
The private key file has incorrect permissions (too open) -> Option AQuick Check:
Private key file permissions cause SSH denial [OK]
Quick Trick: Set private key file permission to 400 or stricter [OK]
Common Mistakes:
MISTAKES- Ignoring file permission errors
- Assuming instance state causes permission denied
- Confusing deleted key pairs with connection errors
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