It sounds as if Kubernetes is oriented towards a single data center, DC in Cassandra parlance, and maybe Ubernetes attempts to address that. If there is indeed some simple, obvious, way to trick Kubernetes into Cassandra-style multi-DC operation, it sure would be helpful if it was documented more obviously.
Also, it seems like a lot of these cluster tools are oriented towards applications that in turn use networked services such as Cassandra for storage of the vast bulk of their data. IOW, they persist their real data in an external database such as Cassandra, and that any other persisted data or state is relatively inconsequential. How that model applies to a database server that works best with fairly large amounts of ultra-fast local data storage is not so obvious. Maybe that simply wasn't a design goal? -- Jack Krupansky On Fri, Apr 15, 2016 at 3:48 PM, David Aronchick <aronch...@gmail.com> wrote: > Hi-- > > It's trivial to do this in Kubernetes, even without Ubernetes. Please feel > free to send me a note and I'll walk you through it. > > Disclosure: I work on Google on Kubernetes. > > On Thu, Apr 14, 2016 at 9:10 AM Joe Stein <crypt...@gmail.com> wrote: > >> You can do that with the Mesos scheduler >> https://github.com/elodina/datastax-enterprise-mesos and layout clusters >> and racks for datacenters based on attributes >> http://mesos.apache.org/documentation/latest/attributes-resources/ >> >> ~ Joestein >> On Apr 14, 2016 12:05 PM, "Nate McCall" <n...@thelastpickle.com> wrote: >> >>> >>> Does anybody here have any experience, positive or negative, with >>>> deploying Cassandra (or DSE) clusters using Kubernetes? I don't have any >>>> immediate need (or experience), but I am curious about the pros and cons. >>>> >>>> >>> >>> The last time I played around with kubernetes+cassandra, you could not >>> specify node allocations across failure boundaries (AZs, Regions, etc). >>> >>> To me, that makes it not interesting outside of development or trivial >>> setups. >>> >>> It does look like they are getting farther along on "ubernetes" which >>> should fix this: >>> >>> https://github.com/kubernetes/kubernetes/blob/master/docs/proposals/federation.md >>> >>> >>> >>> -- >>> ----------------- >>> Nate McCall >>> Austin, TX >>> @zznate >>> >>> Co-Founder & Sr. Technical Consultant >>> Apache Cassandra Consulting >>> http://www.thelastpickle.com >>> >>
