Ok...so bear with me on this one. "Hypervisor" was a little white lie. What I actually want to do is implement OpenStack as a backend for CloudStack (yo dawg, I hear you like cloud in your clouds, etc). I know I can use KVM and OVS as backends for CloudStack natively but, as I said, this is for a project with some very specific needs...
As OpenStack is completely API driven, I see no issues with the basics of communication between CS and OS. This would, of course, bypass the OS concept of Linux network namespaces for routing and I would implement the CS routing VM as a VM (just like in VMware or Xen) connected between an OS tenant network and an OS external network. CS volumes would be OS volumes. Secondary storage would be a VM running NFS. In principle, I see that the CS concepts of compute, network and storage could be implemented on OS. I was hoping that I could basically write a "driver" that would do the necessary actions against OS based on standard calls to a CS class/method/whatever, based on some assumption that the underlying hypervisor in CS was at least some sort of pluggable architecture. Yes, this may sound a little crazy, and I did say this was probably not something strategic to the CloudStack direction, but for me it actually fits a funny shaped hole I've discovered and I'm interested in at least understanding how such a thing could be done. Thanks, John. On Fri, May 19, 2017 at 12:06 AM, Simon Weller <swel...@ena.com.invalid> wrote: > Which hypervisor are you wanting to implement​? > > Simon Weller/615-312-6068 > > -----Original Message----- > From: John Smith [john.smith....@gmail.com] > Received: Thursday, 18 May 2017, 5:29PM > To: dev@cloudstack.apache.org [dev@cloudstack.apache.org] > Subject: Extend CloudStack for a new hypervisor > > Greetings! > > I have a need to extend CloudStack to support an additional hypervisor. > This is not something I consider strategic for CloudStack itself, but I > have a project with a very specific need. > > I have a development background but am not an active developer right now > ... so looking forward to getting back in the saddle! I've never developed > against the CloudStack tree before. > > I can't find any docs on how one would introduce support for a new > hypervisor (eg. what classes, methods, etc, need to be implemented, > extended, etc) and checking the source tree I can't easily see if there is > a base to build from. I would appreciate any pointers about where to start > looking to save me going through the entire tree from scratch. > > The standard CloudStack concepts should be easy enough (ha!) to map 1:1 to > this additional hypervisor (including primary & secondary storage, router & > secondary storage VMs, the networking concepts, etc) so I'm hoping that I > can simply implement it like a VMware or Xen backend ... > > Thanks in advance! > > John. >
