Feature Overview (aka. Goal Summary)  

While installing OpenShift on AWS add support to use of existing IAM instance profiles

Goals (aka. expected user outcomes)

Allow a user to use existing an IAM instance profile while deploying OpenShift on AWS.

Requirements (aka. Acceptance Criteria):

When using existing IAM role, the Installer tries to create a new IAM instance profile. As of today, the installation will fail if the user does not have permission to create instance profiles.

The Installer will provide an option to the user to use an existing IAM instance profile instead trying to create a new one if this is provided.

Background

This work is important not only for self-manage customers who want to reduce the required permissions needed for the IAM accounts but also for the IC regions and ROSA customers.

Previous work

https://github.com/dmc5179/installer/commit/8699caa952d4a9ce5012cca3f86aeca70c499db4