Blu Age L3 - IAM instance profile doesn't appear while creating EC2

Note: I am writing the answer to my own question as I found the solution to it, and anyone facing the same issue may benefit from this.

My first guess was that I didn't create the "IAM role" correctly as stated in the previous step. So I deleted it and recreated the "IAM role". But it didn't resolve the issue.

Next, I thought it may be a matter of "IAM role" not being reflected, so I signed out of AWS console and signed back in. No luck with this either.

After going through several web searches and blogs, I got to know that...

• whenever we create a "IAM role" for EC2 through console, a "IAM instance profile" should also get created automatically
• however, in some cases due to a glitch, the "IAM instance profile" doesn't get created
• in that case, we should create the profile from CLI

So, I ran below two commands in the CLI to create an instance profile and then add the role to the instance profile respectively.

1. aws iam create-instance-profile --instance-profile-name aws-bluage-l3-workshop-efs-role
2. aws iam add-role-to-instance-profile --role-name aws-bluage-l3-workshop-efs-role --instance-profile-name aws-bluage-l3-workshop-efs-role

Only then the profile started to appear in the dropdown.