Hi! Independently from cloudstack, I'ld strongly recommend to not use ceph and hypervisors on the very same machines. If you just want to build a POC this is fine, but If you put load on it, you'll see unpredictible behavior (at least on the ceph side) due to heavy I/O demands. Ceph recommends at least 1 Core and 1 GB RAM as a rule of thumb for each OSD. BTW. I also won't run a ceph cluster with only two nodes. Your MON should be able to form a quorum, so you'ld need at least three nodes.
If you run a cluster with less than about 6 or 8 nodes, I'ld give gluster a try. I've never tried it myself but I assume this should be usable as "pre-setup" Storage at least with KVM Hosts. cheers, - Stephan Am Freitag, den 17.06.2016, 13:36 +0200 schrieb Jeroen Keerrel: > Good afternoon from Hamburg, Germany! > > Short question: > Is it feasible to use CloudStack with Ceph on local storage? As in > “hyperconverged”? > > Before ramping up the infrastructure, I’d like to be sure, before > buying new hardware. > > At the moment: 2 Hosts, each 2 6c XEON CPU, 24GB RAM and each have 6 > 300GB SAS drives. > > According to CEPH, they advise bigger disks and separate storage > “nodes”. > CloudStack documentation says: Smaller, High RPM disks. > > What would you advise? Buy separate “Storage Nodes” or ramp up the > current nodes? > > Cheers! > Jeroen > > > > Jeroen Keerl > Keerl IT Services GmbH > Birkenstraße 1b . 21521 Aumühle > +49 177 6320 317 > www.keerl-it.com > i...@keerl-it.com > Geschäftsführer. Jacobus J. Keerl > Registergericht Lubeck. HRB-Nr. 14511 > Unsere Allgemeine Geschäftsbedingungen finden Sie hier. > >
