+ / / tl;dr - I did another round of drive testing (originally I only tested OpenEBS and hostPath), this time with some rented Hetzner machines and Ansible-powered automation. The GitLab repository isn’t ready for mass consumption yet but I’ll update here (and this tl;dr) when it is, along with the results. UPDATE (04/09/2020) The GitLab repository is up! You can skip this entire article and just go there. NOTE: This a multi-part blog-post!| vadosware.io
+ / / tl;dr - In order to test storage performance I set up a completely automated test bed for all the storage plugins, this article chronicles the installations of some of the plugins. It’s particularly long because I made lots of mistakes. Mostly useless sections are prefaced with a notice on why you can skip them, skim the ToC and click on anything you like. UPDATE (04/09/2020) The GitLab repository is up!| vadosware.io
+ / / tl;dr - I explain the YAML and Makefile scripts that power the fio and pgbench (oltpbench) tests I’m going to run. UPDATE (04/10/2021) Turns out I was mistaken -- OpenEBS Mayastor doesn't support single-node disk-level failure domains. It's very well described on their website in the FAQ, but I somehow missed and/or forgot that, so the tests for Mayastor will only represent JBOD setup (no replication). On a different but related note, cStor supports cross disk replication (mirroring o...| vadosware.io
tl;dr - There are at least two ways to wait for Kubernetes resources you probably care about: kubectl wait for Pods, initContainers for everything else One somewhat rarely talked about issue in Kubernetes land is how exactly people wait for stuff to happen. “Stateful workloads” can get hand-waved to using StatefulSets, and most intricate large deployable things (databases, etc) have Operators that you can use. Sometimes you just want to make sure a Service is up before you start a pod tha...| vadosware.io
+ + UPDATE (10/28/2021) I've gotten some great feedback from a post in r/kubernetes and another post in r/zfs. I've added a section with some thoughts tl;dr - I recently switched my baremetal cluster storage setup to OpenEBS ZFS LocalPV + Longhorn. Some issues with Longhorn not running on PVCs aside, the setup is flexible perf wise (ZFS LocalPV) and I at least have a low-complexity option for distributed/HA storage (Longhorn).| vadosware.io
)
)
)
)
)
