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.
ceph
Migrating Unmanaged OSDs to Managed OSDs in Ceph Squid
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 existing OSD into the orchestrator. If an OSD was deployed manually or predates your orchestrator setup, Read more
apache spark
Apache Spark smoke tests on kubernetes
Introduction Benchmarking remains a critical (and often underestimated) tool when designing or validating large-scale data platforms. While many teams rely on synthetic workloads or production replays, standardized benchmarks still play a key role when comparing architectures, tuning clusters, or validating infrastructure choices. TPCx-HS is one of those benchmarks: designed to Read more
ceph
Choosing the Right Storage Backend for Kubernetes PVCs
Most discussions about PVC focus on on-prem deployments, but many of these technologies are equally relevant in the cloud, especially when using managed block storage like AWS EBS, which caps at around 64K IOPS. By contrast, OpenEBS LocalPV (ZFS or LVM) can attach directly to NVMe-backed local disks, unlocking true Read more