"Cannot open access to console, the root account is locked" AL2 t2 t3

Question

Hi guys  
  
Trying to migrate a t2 AL2 instance to t3 and getting the message:  
  
"Cannot open access to console, the root account is locked" when launching the t3  
  
The instance is based on amzn2-ami-hvm-2.0.20180810-x86_64-gp2 with no particularly special features, and ENA is on. What am I doing wrong? What have I missed?  
  
Thanks  
  
Chris  
  
Edited by: ChrisDean on Sep 28, 2018 1:15 PM  
  
Edited by: ChrisDean on Sep 28, 2018 1:16 PM

Answer

We just ran into this same problem and suprised it hasn't been addressed before.   
After some searching found this: https://aws.amazon.com/premiumsupport/knowledge-center/boot-error-linux-m5-c5. Although not addressing our instance types, it's the same root cause: /etc/fstab fails to mount devices which are specified as /dev/xvd\[] this document explains it: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.html   
  
I hope that helps!  
-KellyK

"Cannot open access to console, the root account is locked" AL2 t2 > t3

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