Background

• Doc impact
• What are we introducing to the customer with this epic? A new option in the wizard to enable a user to include custom manifests  
• Where in the Content journey does this fit? In section 3.2, update that a new option Include custom manifests can be selected https://access.redhat.com/documentation/en-us/assisted_installer_for_openshift_container_platform/2022/html-single/assisted_installer_for_openshift_container_platform/index#installing-with-ui This creates a new step - 6 Custom manifests after the Networking step.
• Add a note that if your deployment is integrated with a 3rd party platform, such as Nutanix, Oracle Cloud Platform, or vSphere (see attached image) that you must add a custom manifest, by default. 
• Details of how to add and remove custom manifests needs to be added in a new section after Configuring Networking - see attached videos for details. 
• Full support in this release 
• If this is new content for existing documentation, what are the changes? Document a new step in the wizard as an option before the installation starts to deploy custom manifests. 
• What is the target release? AI 2.21

People

• SME: Montse Ortega Gallart

• QE: Elia Jahshan

Resources and Links

• For more context see the dev story https://issues.redhat.com/browse/MGMT-12919 and the demo at 11:45 
• Are there any design docs available? no design doc, only source material for achieving this outside of AI
• https://docs.openshift.com/container-platform/4.13/installing/install_config/installing-customizing.html#installation-special-config-kargs_installing-customizing
• https://github.com/openshift/installer/blob/master/docs/user/customization.md#enabling-rhcos-extensions - Adding day-1 kernel arguments 

• API spec https://github.com/openshift/assisted-service/blob/2bbbcb60eea4ea5a782bde995bdec3dd7dfc1f62/swagger.yaml#L5636

Release Note

• Yes 

(Day 0) Intro, Planning, Pre-requisites  (concepts)

• Why do we need it? to enable the user to complete Day 1 operation to customize the installation using the AI wizard
• See attached image

(Day 1) Install, Configure, Acceptance Test (procedures)

• Prior to Installing, there is now the option to add custom manifests

• Option currently possible outside of Assisted Installer https://docs.openshift.com/container-platform/4.13/installing/install_config/installing-customizing.html#installation-special-config-kargs_installing-customizing