Setting Up AWS Credentials and Users

1. Create an IAM User

• Step 1: Logged in to the AWS Management Console → IAM (Identity and Access Management)
• Step 2: Navigated to Users → Create user
• Step 3: Entered usernames (e.g., Damilola). We created a total of six IAM users
• Step 4: Selected "Programmatic access" (for CLI/SDK) and/or "AWS Management Console access" (for web UI)
• Step 5: Clicked Next: Permissions

2. Assign Permissions

• Added users to a group with predefined policies
  • Created a group named Banking App Development Team (TCS) and attached the policies AdministratorAccess and PowerUserAccess
• Step 6: Clicked Next: Tags → added optional tags (Environment=Dev) → Next: Review

3. Generate Access Keys (for CLI/SDK)

• Step 7: Reviewed user details → Created user
• Step 8: Downloaded the .csv file containing:
  • Access Key ID
  • Secret Access Key
  • This was our only chance to securely save the Secret Key

4. Set Up AWS CLI

• Installed AWS CLI on Linux (Ubuntu):

  # We used Linux (Ubuntu):
  sudo apt install awscli
  

• Configured Credentials:

  aws configure
  

  • Entered Access Key ID and Secret Access Key
  • Set default region to us-east-1
  • Set default output format to terraform
  • This generated ~/.aws/credentials and ~/.aws/config files

5. Verify Credentials

• Ran the following command to verify credentials:

aws sts get-caller-identity

• Received output confirming credentials are valid:

  {
      "UserId": "AIDA...",
      "Account": "123456789012",
      "Arn": "arn:aws:iam::123456789012:user/dev-user"
  }