HI, Thanks for that reply Carlos, that is an interesting solution, and I hadn't fully considered how a one-box OpenNebula system might be useful in Diego's case.
Presumably then, if this were to be extended to a two-host cluster, the front-end component could be run on either node and migrate from one to the other with e.g. pacemaker. I've read this post with interest: http://blog.opennebula.org/?p=1523 about setting up DBRD in active/standby mode and then using this to export NFS and ATAoE, but I hadn't considered the possibility of using the same two machines as the VM hosts. For a small business requiring an HA solution, this might be a useful approach. Is this a more common scenario than I am imagining, and is there anything in particular to consider when designing such a system? Kind regards, Ben On 27/10/11 11:33, Carlos Martín Sánchez wrote: > Hi, > > OpenNebula can be used for the scenario you describe, even if you are > not going to take advantage of its on-demand cloud features. > It will provide a centralized view and management of your Images and > VMs, what will surely help to administer and monitor your virtualized > workstations. > > OpenNebula can use the same computer as the front-end and host, the > only thing to keep in mind is that you need to use the shared storage > transfer manager [1] (the front-end and the hosts are "sharing" the > same storage). > > Knowing that all the VMs will be windows, you may want to configure > remote desktop access to the guest OS instead of VNC. > > Regards. > > [1] http://opennebula.org/documentation:rel3.0:sfs > -- > Carlos Martín, MSc > Project Engineer > OpenNebula - The Open Source Toolkit for Cloud Computing > www.OpenNebula.org > <http://www.opennebula.org/> | [email protected] > <mailto:[email protected]> > > > On Wed, Oct 26, 2011 at 3:55 PM, Diego Jacobi <[email protected] > <mailto:[email protected]>> wrote: > > Hi Ben. > I appreciate your answer. > > I was expecting to be able to install kvm, sshd, and openNebula on the > same hardware. As I would not need to provide many different > technologies. > I think that I would have maybe 4 VM at the same time, but the virtual > processor will be most of the time sleeping. > > Will this be in some software related conflict ? Or your > recommendation is due to the load ? > > It sounds that the method you describe, involves the same procedures > as installing openNebula. > > Kind regards, > Diego > > > > 2011/10/26 Ben Tullis <[email protected] > <mailto:[email protected]>>: > > Hi Diego, > > > > I don't think that OpenNebula is likely to be the best tool for > the job > > in this case, as it is more geared towards on-demand cloud > computing. > > > > However, it does sound like you could really benefit from > virtualization > > in the office. The way I would approach your situation is as > follows. > > > > Make sure that the machine you're going to use as a server has > hardware > > virtualization support built in. > > http://en.wikipedia.org/wiki/Intel_VT#Processor > > > > Use disks in pairs of equal sizes, then install Linux and configure > > software RAID1 so that the system will be able to withstand a > failure in > > any disk. > > http://en.wikipedia.org/wiki/Mdadm > > > > Install a hypervisor to enable you to run many concurrent virtual > > machines. You might like to consider KVM, Xen and Virtualbox. > > http://www.linux-kvm.org > > http://wiki.xensource.com/xenwiki/ > > http://virtualbox.org > > > > You can then define virtual machines and install Windows onto > them, in > > order to make them available to your colleagues. You can use normal > > Windows system management techniques (such as sysprep) to deploy > > pre-configured Windows system images, thereby saving you time. > You could > > then use VNC to make these virtual machines available to your > staff, in > > the manner that you suggest. > > > > I'm currently looking at building an OpenNebula cluster to support a > > small-business requirement, but I can't really see that there is > any way > > of ensuring high-availability in any system with fewer than four > > physical servers in it. I think you'd be making things unnecessarily > > hard for yourself if you tried to do it all on one server. > > > > I hope that helps. > > > > Kind regards, > > Ben > > > > -- > > |Ben Tullis > > |Tiger Computing Ltd > > |"Linux for Business" > > | > > |Tel: 033 0088 1511 > > |Web: http://www.tiger-computing.co.uk > > | > > |Registered in England. Company number: 3389961 > > |Registered address: Wyastone Business Park, > > |Wyastone Leys, Monmouth, NP25 3SR > > > > > > > _______________________________________________ > Users mailing list > [email protected] <mailto:[email protected]> > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org > > > > _______________________________________________ > Users mailing list > [email protected] > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org -- |Ben Tullis |Tiger Computing Ltd |"Linux for Business" | |Tel: 033 0088 1511 |Web: http://www.tiger-computing.co.uk | |Registered in England. Company number: 3389961 |Registered address: Wyastone Business Park, |Wyastone Leys, Monmouth, NP25 3SR
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