Asish Kumar
0b3605dd84
Clean up stale CRUSH rules after the Ceph mgr starts so rules left behind by pool failure-domain or device-class changes do not accumulate indefinitely.
The cleanup is guarded by a package-level RWMutex. Pool create and update paths hold the read lock while creating and assigning CRUSH rules, while cluster-wide cleanup holds the write lock before listing pools and deleting unused rules. This keeps pool reconciles parallel with each other while preventing cleanup from deleting a rule that another reconcile has just created but not yet attached to a pool.
Keep direct pool-delete cleanup for the pool's current CRUSH rule, make the cluster-wide cleanup best-effort across all unused rules, and add an operator-level ROOK_DELETE_UNUSED_CRUSH_RULES setting for clusters that need to leave unused custom rules in place.
Document the operator and Helm settings, regenerate the Helm chart docs, and add a pending release note for the default cleanup behavior.
Signed-off-by: Asish Kumar <officialasishkumar@gmail.com>
(cherry picked from commit 24a35e4e74)
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Rook
Rook is an open source cloud-native storage orchestrator, providing the platform, framework, and support for Ceph storage to natively integrate with cloud-native environments.
Ceph is a distributed storage system that provides file, block and object storage and is deployed in large scale production clusters.
Rook automates deployment and management of Ceph to provide self-managing, self-scaling, and self-healing storage services. The Rook operator does this by building on Kubernetes resources to deploy, configure, provision, scale, upgrade, and monitor Ceph.
The Ceph operator was declared stable in December 2018 in the Rook v0.9 release, providing a production storage platform for many years. Rook is hosted by the Cloud Native Computing Foundation (CNCF) as a graduated level project.
Quick Start Guide
Starting Ceph in your cluster is as simple as a few kubectl commands.
See our Quickstart guide to get started with the Ceph operator!
Designs
Ceph is a highly scalable distributed storage solution for block storage, object storage, and shared filesystems with years of production deployments. See the Ceph overview.
For detailed design documentation, see also the design docs.
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If you have any questions along the way, don't hesitate to ask in our Slack channel. Sign up for the Rook Slack here.