On Thu, Nov 07, 2013 at 10:04:15AM +0530, Prasanna Santhanam wrote: > On Wed, Nov 06, 2013 at 05:29:53PM -0500, Jiri B wrote: > > Hi, > > > > my attempt is to install cloudstack management server on > > a non-Linux OS (an UNIX-like one). Of course not for production > > setup in this case... :-) > > CloudStack is mostly tested on RHEL and Ubuntu. If you are using > something like Arch then you might see surprises. I'm guessing Debian > would work.
I would say you are confusing here. AS cloudstack mgmt server only hands off commands to hypervisors, why it should be big problem when hypervisor is RHEL/Debian distro? > > > > But... I'm not sure I fully understand some basic concepts. > > > > Are most of the scripts in /usr/share/cloudstack-common/scripts > > used only when cloudstack mgmt server is also acting as > > hypervisor? I see there's a lot of Linux specific commands > > inside scripts (brctl, iptables...). > > > They are 'packaged' there, but are mostly executed on the hosts and/or > on cloudstack's agents (systemvms, virtual routers etc). Management > server copies these into hypervisors when they are added (discovered) > to cloudstack. After that cloudstack will only issue commands to > hypervisors and the hypervisor agent will convert the command in to a > script call and execute the required command. OK, got it. So I should not modify paths to files in /usr and python libs in 'scripts' subdir to match ones on my non-Linux OS, because as you say, these scripts are copies to hypervisors while they are added into the setup. > > I also could not find info what is a process of creating > > new VM (when using Linux KVM hypervisor, remote host). > > Does mgmt server need permanent access to storage (NFS), and > > is mgmt server creating new VM image with qemu-img inside > > this storage or does delegate this task to a remote host? > > > The task is delegated to the KVM hypervisor. CloudStack management > server will send a 'command' to the KVM 'agent' to start a VM when you > use the cloud management UI to launch a virtual machine. > > > Hence... the main confusion is how much is management server > > involved in the show. If it is just giving orders (when using > > remote hypervisor), like in RHEVM/oVirt case, and thus the tasks > > are done by cloudstack agent (in KVM hypervisor case)... > > Right, it's only handing off commands to remote agents or if you like > it's 'orchestrating' these flows. > > > > > Thank you very much for clarification. > > > > jirib > > -- > Prasanna., Thank you for clarification. jirib
