Chapter 1. Upgrade overview
The upgrade procedure for Red Hat Quay depends on the type of installation you are using.
The Red Hat Quay Operator provides a simple method to deploy and manage a Red Hat Quay cluster. This is the preferred procedure for deploying Red Hat Quay on OpenShift.
The Red Hat Quay Operator should be upgraded using the Operator Lifecycle Manager (OLM) as described in the section "Upgrading Quay using the Quay Operator".
The procedure for upgrading a proof-of-concept or highly available installation of Red Hat Quay and Clair is documented in the section "Standalone upgrade".
Red Hat Quay only supports rolling back, or downgrading, to previous z-stream versions, for example, 3.7.2 → 3.7.1. Rolling back to previous y-stream versions (3.7.0 → 3.6.0) is not supported. This is because Red Hat Quay updates might contain database schema upgrades that are applied when upgrading to a new version of Red Hat Quay. Database schema upgrades are not considered backwards compatible.
