Backup and Restore of Hub Cluster Services
The RHACM Hub cluster is the single source of truth across the pattern. It will hold the state of the GitOps implementations and the currently deploy/managed clusters and applications. This creates a single point of failure (SPOF), which is somewhat mitigated by the multi-zone deployment of OpenShift that that Hub cluster will reside on. Should the Cloud Provider running the Hub cluster suffer a regional outage, then the Hub cluster will no longer be accessible.
As this pattern is to provide multi-cloud operations, we can look to explore either a Hub of Hubs configuration (quite immature at this point in time) or we can explore the Cluster Backup Operator, which aims to provide a mechanism to Backup and Restore a Hub Cluster to another OpenShift environment.
https://github.com/stolostron/cluster-backup-operator
Proposal will be to leverage the Cluster Backup Operator to backup to an ODF S3 endpoint, then leverage VolSync to synchronize the S3 endpoint to another location, either on-premise or a n other Public Cloud and restore the Hub Cluster services there in the event of a failure.