Feature Overview

Hosted Control Planes (aka HyperShift) is an OpenShift form factor that optimizes for cost and time-to-provision as well as portability cross-cloud with a strong separation of concerns between management and workloads(for more information about HyperShift, check [1]). While HyperShift is OpenShift, it is still a different technical architecture, as a result, it becomes achieves functional parity with existing standalone OpenShift architecture and part of this effort is to ensure that HyperShift deployed OpenShift is compatible with existing layered operators. 

Main Story 

When deploying and life cycling OpenShift clusters with Hosted Control Planes (aka HyperShift), I want to deploy any supported OpenShift layered operator to fully utilize OpenShift value-add.

Requirments 

• Important layered operators are supported first (operators included in OKE/OCP/OPP)
• All other layered operators should be qualified on HyperShift by their respective teams

Additional Information

The goal of this Jira is to make sure all layered operators are tested/validated on Hosted OpenShift clusters (HCP, created by the HyperShift operator), in the same way they are with standalone OpenShift clusters. 

IF testing failed, here is a few key points to keep in mind. Hosted OpenShift clusters don't have master nodes, and they don't expose Machine Config to cluster instance admins (see personas). A quick list of differences can be found here: https://docs.openshift.com/container-platform/4.17/hosted_control_planes/index.html#hcp-ocp-differences_hcp-overview 

To get your operator to work with HCP, here are some quick things to ensure:

• Your operator does not hard-code to master nodes (and does not depend on them).
• Your operator logic does not modify MachineConfigs directly. 

Also, feel free to reach out on #project-hypershift for questions. 

Outcome 

The compatibility of all layered operators is documented in [2]. Also results of operator using RBAC to read/write to MachineConfig/MachineConfigPool thanks to the operator framework team.

References 

1. https://issues.redhat.com/browse/OCPPLAN-5771 
2. https://docs.google.com/spreadsheets/d/1_1cCwMpu8gtZOjeIFiXAupBZMoNCRl8tw18wXZtJF7I/edit#gid=0