Epic Goal

Fully automated installation creating subnets in AWS Local Zones when the zone names are added to the edge compute pool on install-config.yaml.

• The installer should create the subnets on the Local Zones according to the configuration of the "edge" compute pool, provided on install-config.yaml 

Why is this important?

• Users can extend the presence of worker nodes closer to the metropolitan regions, where the users or on-premises workloads are running, decreasing the time to deliver their workloads to their clients.

Scenarios

• As a cluster admin, I would like to install OpenShift clusters, extending the compute nodes to the Local Zones in my day-zero operations without needing to set up the network and compute dependencies, so I can speed up the edge adoption in my organization using OCP.

Acceptance Criteria

• CI - MUST be running successfully with tests automated.
• CI - custom jobs should be added to test Local Zone provisioning
• Release Technical Enablement - Provide necessary release enablement details and documents.
• The PR on the installer repo should be merged after being approved by the Installer team, QE, and docs
• The product documentation has been created

Dependencies (internal and external)

1. SPLAT-636 : install a cluster in existing VPC extending workers to Local Zones
2. OCPBUGSM-46513 : Bug - Ingress Controller should not add Local Zones subnets to network routers/LBs (Classic/NLB)

Previous Work (Optional):

1. Enhancement 1232
2. SPLAT-636 : AWS Local Zones - Phase 1 IPI edge pool - Installer support to automatically create the MachineSets when installing in existing VPC

Open questions:

1. …

Done Checklist

• CI - CI is running, tests are automated and merged.
  • Local Zones BYON: https://github.com/openshift/release/pull/39902
  • Local Zones Full IPI: https://github.com/openshift/release/pull/40031 
• Release Enablement <link to Feature Enablement Presentation>
• DEV - Enhancement Proposal merged: https://github.com/openshift/enhancements/pull/1232
• DEV - Upstream code and tests merged: https://github.com/openshift/installer/pull/7137
• DEV - Downstream build attached to advisory: <link to errata>
• QE - Test plans in Polarion: https://polarion.engineering.redhat.com/polarion/#/project/OSE/workitems?query=trello%3ASPLAT%5C-657 
• QE - Automated tests merged: https://github.com/openshift/release/pull/41574 
• DOC - Downstream documentation merged: https://github.com/openshift/openshift-docs/pull/60771