You may have an existing Ceph cluster that you want to integrate with Kubernetes, or wanted centralized ceph management in a single cluster connected to multiple Kubernetes clusters what's the solution? External Rook-Ceph Cluster. An external cluster is a Ceph configuration that is managed outside of the local K8s cluster. In external mode, Rook will provide the configuration for the CSI driver and other basic resources that allow your applications to connect to Ceph in the external cluster. This talk will give a quick overview of the Rook external cluster, which includes its deployment, demo, and how the latest ceph features can be used with this like Multi-site, rados namespace, etc.