ceph
Ceph in Production: RBD, RGW and CephFS
A field guide to Ceph in production: which surface serves which workload, what failure domains cost in replicas, how the upgrade lifecycle really rolls back, and what key rotation does not do.
ceph
Ceph RGW Accounts in Tentacle: Plan the Identity Model
Ceph tenants and accounts solve different problems. Separate the Tentacle upgrade from account adoption, then test ownership, IAM and notifications.
ceph
Ceph Security Update: Four CVEs and Key Rotation
Ceph 20.2.4 and 19.2.6 patch four authentication and authorization CVEs. The remediation also needs CephX key rotation, client checks, and RGW multisite planning.
ceph
Upgrading a Ceph Multi-Site S3 Platform from Squid to Tentacle
A practical Ceph RGW upgrade plan for multi-site S3 platforms, covering replication validation, canary rollout, S3 acceptance tests and the limits of rollback.
data
Stop using MinIO as a NoSQL database: why S3 object stores collapse on small-file workloads
Two MinIO platforms, same root cause: used as a NoSQL store. Field notes on LIST IOPS, XFS directory limits, scanner & heal SLAs, the erasure-coding storage-efficiency inversion on small objects, and why Apache Cassandra (or Ceph) is the right answer on-prem in 2026.
ceph
Migrating Unmanaged OSDs to Managed OSDs in Ceph Squid
Migrating unmanaged OSDs is one of the operations I run for Ceph clients: Ceph storage consulting. If you are running Ceph Squid with a mix of managed and unmanaged OSDs, there is one thing worth stating clearly upfront: There is no in-place adoption mechanism in Squid. You cannot “import” an Read more
data
MinIO’s Community Edition: The End ? 🚨
Beware the AGPL! you may end with a product orphan from its S3 storage… MinIO has long been a popular open-source S3-compatible storage solution, but their strategy has shifted dramatically, especially since the release of their new AIstor product, now positioned as their main enterprise S3 offering. Over the past Read more
data
Who’s Using Ceph RBD Mirroring for Kubernetes Storage in Production?
RBD mirroring in production is one of the patterns I audit and design: Ceph storage consulting. Alpha Feature in Production… Good Idea? The most promising approach, journal-based mirroring, offers near real-time replication and faster failover. However, it’s currently an alpha feature in the Ceph CSI driver and relies on rbd-nbd, Read more
data
🚨 MinIO goes into maintenance mode
MinIO has just announced that the open source project is now in maintenance-only mode: no new features, no regular PR review, only best-effort community support.If your data lake, AI workloads or internal S3-compatible storage rely on MinIO, this is no longer a theoretical risk: it is an operational one. Over Read more