Alexandr, I would suggest you to give it a try. Having different capacity Compute Nodes is normal, as far as your compute requirements are not beyond hardware capacity. mostly when you start spinning VMs, reason of the VM is more important ( like how much cpu cycles does it need and how much memory is required ) remember disk storage is always a layered approach, you can provision a vm simple having space from the compute node an or it may have anything like dedicated storage using swift, sinder etc.
I had setup an OpenStack POC for one of the clients with completely scarce compute nodes like 1 VMWARE physical machine running Controller + Network + Compute Node ( with 12 Cores dedicated + 12 GB RAM and 2 TB Of storage from VMWARE disks ) , then 1 Pentium-4 hardware machine ( with 2 GB of RAM, 1 physical processor , this could only run a single VM ) and then DELL R750 ( with 24 Cores, 64 GB RAM, 5 TB of Disk storage , used to spin 15 normal VMs and 10 high CPU demanding VMs ) and all was setup to make things combined, no matter what underlying hardware was. I suppose you also know about Over committing in OpenStack for both CPU and memory. ( in KILO it was 16:1 for CPU and 1.5:1 for memory ) SRV-IO is another part to play for PCI related over committing Regards, Nasir Mahmood On Thu, Mar 31, 2016 at 1:31 PM, Alexandr Porunov < alexandr.poru...@gmail.com> wrote: > Hello, > > I want to use totally different compute nodes for different purposes. Is > it normal practice? > > Also, if I have a server with a lot of RAM and a lot of disk space is it > normal practice to install swift and nova on this server to use maximum of > the server? Application will use only RAM and storage will use only disks. > > Sincerely, Alexandr > > _______________________________________________ > Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > -- Nasir Mahmood
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