Hi Peter,
On Wed, May 4, 2011 at 7:42 AM, Peter Farič <peter.fa...@ledinek.com> wrote: > Hi, > > > I'm mostly using the CLI, but through Sunstone I can explain it best. > > In Sunstone when you shutdown a VM, then the VM entry disappears. If I want > to run the same VM later I have to go through the same process of creating > the VM like the first time. In the CLI I understand I use the same VM > template file to create the same VM again. Is this the way its supposed to > work or will future versions have some sort of mechanism to deal with this > use case (on the mailing list I read something about a VM template pool)? Yes, upcoming ONE release will ship with a Template Pool, to be able to instantiate VMs from predefined templates. > From a users perspective there is no real difference betwen onevm delete and > onevm shutdown - they both make a previously running VM inaccessible... > Maybe a better question would be - how do you use Opennebula? Delete a VM is like unplugging the power cord (the FS can break), adn plus the image is not transfered back (even if the SAVE flag is present). Shutdown represents a more clean approach, the VM is cleanly shut down, and the image saved if marked so. > > What if I wanted to create new VMs on the fly if network traffic were to > spike? As I understand it I would make hooks and if some monitored value > exceeded the threshold it would run create on an VM template file. Is this > correct? For this use case, you will need an (easily to develop) new component, a Service Manager, that will use values from ONE monitoring to decide to launch or shutdown VMs. > > > At our company we have 10 dedicated servers for virtualization which share a > SAN. I plan on running 30 - 40 VMs. Mostly Linux. > > Is Opennebula a good fit for our scenario? I would say it is ;) > > > > Thanks! Regards, -Tino -- Constantino Vázquez Blanco | dsa-research.org/tinova Virtualization Technology Engineer / Researcher OpenNebula Toolkit | opennebula.org > > > Sincerely, > Peter Farič > > Neumann, Steffen wrote: >> >> Hi, >> >> I think you understood things correctly, >> in ONE you create and shutdown instances, and you get new VM IDs for every >> cycle. >> >> So in our HPC setup, we get "fresh" virtual compute nodes with every onevm >> create. >> What exactly do you want ? Do you need the changes to be persistent ? >> >> yours, >> Steffen >> ________________________________________ >> From: users-boun...@lists.opennebula.org >> [users-boun...@lists.opennebula.org] on behalf of Peter Farič >> [peter.fa...@ledinek.com] >> Sent: 03 May 2011 12:57 >> To: users@lists.opennebula.org >> Subject: [one-users] Beginner questions: Opennebula 2.2.1 >> >> Hi! >> >> >> I'm experimenting with opennebula 2.2.1 on Centos 5.5 i686. So far I am >> pleased with the results. I got two KVM nodes and am running two VMs. >> >> Since I am a beginner I can't seem to wrap my head around the lifecycle >> of VMs. I looked at the documentation and the shown lifecycle... When I >> shutdown a VM instance it is not shown in "onevm list" anymore. I read >> that this is normal. If I then want to start it again I have to run >> "onevm create centos.one" which is ok, but how do I automate this >> process so oned can start it on its own or am I missing something? I am >> used to the way virt-manager does things as it leaves an entry for a VM >> instance even if its shutdown and keeps the VM ID number... Any thoughts >> on this? >> >> One other thing is when I have a VM running on a node and I run >> "poweroff" in the VM instance, the VM shuts down and the nodes "virsh >> list" shows the VM as not running anymore. On the "oned" server "onevm >> list" still shows the VM instance as running. Shouldn't it recognize the >> new state of the VM and report something? >> >> >> Thanks! >> >> >> -- >> >> LP, >> --------------------------------------- >> Peter Farič >> Sistemski administrator >> Tel.: +386 2 613 00 79 >> Fax : +386 2 613 00 60 >> Email: peter.fa...@ledinek.com >> WWW: http://www.ledinek.com >> Ledinek Engineering d.o.o. >> Bohovska cesta 19 A >> SI-2311 HOČE >> Slovenija >> --------------------------------------- >> >> _______________________________________________ >> Users mailing list >> Users@lists.opennebula.org >> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org >> >> > > -- > > LP, > --------------------------------------- > Peter Farič > Sistemski administrator > Tel.: +386 2 613 00 79 > Fax : +386 2 613 00 60 > Email: peter.fa...@ledinek.com > WWW: http://www.ledinek.com > Ledinek Engineering d.o.o. > Bohovska cesta 19 A > SI-2311 HOČE > Slovenija > --------------------------------------- > > _______________________________________________ > Users mailing list > Users@lists.opennebula.org > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org > _______________________________________________ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
