Creating IAM Roles in AWS
IAM roles are one of the critical components in AWS Identity and Access Management (IAM). IAM roles allow you to grant temporary access to users, applications, and services to AWS resources.
Steps/Explanation
Log in to the AWS Management Console and navigate to the IAM dashboard.
Click on "Roles" from the left-hand side menu and then click on "Create role."
Select the type of trusted entity that can assume this role. In most cases, it will be AWS service.
Choose the AWS service that will use this role.
Select the permissions that this role will use. You can use AWS policies, JSON scripts where you can define permissions at the granular level.
Finally, give a name to your role, choose a description and click on "Create role" button.
Assign the created role to the users, applications, or services that require temporary access to the AWS resources.
Examples and Use Cases
You want to grant a third-party service access to your AWS resources without sharing your AWS account credentials. Create a role with specific permissions and provide it to the service provider.
You want to provide temporary access to a developer who needs to investigate a production issue. Create a role with specific permissions, and the developer can use it temporarily to access only the necessary resources.
Important Points
IAM roles help you avoid sharing your AWS account credentials.
Roles are granular, which means you can define specific permissions.
Roles have a specific lifespan and automatically expire.
You can assign roles to users, applications, and services.
Summary
IAM roles provide a secure and flexible way to grant temporary access to AWS resources. By following the above steps, you can create IAM roles in AWS and assign them to the necessary users, applications, or services. IAM roles help in giving granular permissions to users, thus making it more secure, and you can revoke the access anytime you want.