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  1. OpenShift Container Platform (OCP) Strategy
  2. OCPSTRAT-337

[Phase 1 MVP/Tech Preview] OLM 1.0 - Extension Catalogs (F1)

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    • OCPSTRAT-27Operators and Operator Lifecycle Management and Operator Hub
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    Description

      Feature Overview

      • The existing OLM concepts and on-disk formats around catalogs, packages and channels are to be used as a basis for OLM 1.0 and its new set of APIs.

      Goals

      • Users of OLM 1.0 can leverage the existing catalog images that ship with OpenShift since 4.9 or newer (in the FBC format).
      • Users of OLM 1.0 can enable OLM 1.0 APIs and create API object(s) in parallel with the 0.x APIs on the same cluster with the same catalog image.
      • Users of OLM 1.0 do not have to rebuild their existing catalogs into a new format, if they are already using the FBC format.
      • Users of OLM 1.0 do not have to re-learn OLM core packaging concepts. Operators still ship in a history of versions inside a channel, a collection of channel is known as a package.

      Requirements

      • OLM 1.0 APIs are going to be cluster-scoped. As such we need to bridge the current namespace-scoped catalog model.
      Requirement Notes isMvp?
      A cluster-scoped catalog representation must exist   YES
      CI - MUST be running successfully with test automation This is a requirement for ALL features. YES
      Release Technical Enablement Provide necessary release enablement details and documents. YES

      Use Cases

      Main Use Case:

      • OLM 1.0 users can leverage the OpenShift default catalogs with the new APIs with easy configurations
      • OLM 1.0 users can still select from a range of available packages, release channels and versions to install that come from a catalog image that ships in the FBC format

      Alternative Use Case:

      • OLM 1.0 users can re-use their existing custom catalogs but may have to reference them in the cluster with another, cluster-scoped API

      Definition of Done / Acceptance criteria

      • all use cases discussed above are implemented
      • the existing weighting of catalogs remains available
      • the existing scoping of an installation request to a particular catalog remains available

      Background, and strategic fit

      This is part of a larger effort to re-design vital parts of the OLM APIs and conceptual models to fit the use case of OLM in managed service environments, GitOps-controlled infrastructure and restrictive self-managed deployments in Enterprise environments. You can learn more about it here: https://docs.google.com/document/d/1LX4dJMbSmuIMn98tCiBaONmTunWR6zdUJuH-8uZ8Cno/edit?usp=sharing

      Documentation Considerations

      • the way OLM 1.0 refers to existing FBC-formatted catalog images needs to be documented.
        • 3 YAML samples in the doc:
          • Catalog YAML references Red Hat catalog
          • Catalog YAML references Certified catalog
          • Catalog YAML reference Community catalog
      • users need to understand how catalog references are managed on the cluster when the operator management happens at the cluster scope
      • users need to understand how OLM 1.0 resolves installation
      • we expect some customers to use this feature to bring custom operators to the cluster

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              DanielMesser Daniel Messer
              DanielMesser Daniel Messer
              Jian Zhang Jian Zhang
              Matthew Werner Matthew Werner
              Joe Lanford Joe Lanford
              Senthamilarasu S Senthamilarasu S
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