_IAMRolesForEC2

IAM Role for EC2 (Agent)

You can use IAM Roles for Amazon EC2 to optionally skip credentials configuration all together: if an agent happens to run on an EC2 instance started with an instance profile (IAM role), the tasks can be configured to facilitate those credentials. Of course, the underlying IAM role needs to have sufficient permissions for the task at hand.

This credentials source requires the agent to be running on an Amazon EC2 instance started with an instance profile, which yields three scenarios:

• local agent - requires the hosting Bamboo server itself to run on EC2
• remote agent - requires the remote agent to run on EC2
• elastic agent - requires the elastic agent to run on EC2
  •  You can optionally specify the ARN of another role that the agent's IAM role for EC2 should assume via the instance profile credentials - this enables various scenarios, notably switching to roles across your own AWS accounts and third-party.AWS accounts (cross-account IAM roles).