[one-users] Remotes Directory

[Greg Stabler]

Javier,

I don't know why I didn't think of that. It worked! Thank you!

Greg Stabler
Computer Science/MS Candidate
School of Computing, McAdams 120
Clemson University, Clemson, SC 29634
gstable at clemson.edu


On Tue, Apr 10, 2012 at 6:49 AM, Javier Fontan <jfontan at opennebula.org>wrote:

> Why don't you create a new set of drivers and use them for the nodes
> that need to use the wrappers?
>
> For example,
>
>  * Copy vmm kvm remotes to kvm_clemson
>  * Change the way of calling the commands
>  * Add the new drivers to oned.conf
>  * Add the nodes with kvm_clemson vmm drivers
>
> It is mostly the same as your proposed solution but in this case you
> don't need to change OpenNebula code (aside from the driver itself)
>
> On Thu, Apr 5, 2012 at 7:06 PM, Greg Stabler <gstable at clemson.edu> wrote:
> > I'm trying to add our high-performance cluster to our OpenNebula 3.0
> system
> > to run VMs on the cluster. Due to security requirements on the cluster,
> we
> > have had to write several wrapper scripts for things such as virsh,
> > ovs-vsctl (for Open vSwitch), and brctl to ensure that someone does not
> > misconfigure a cluster node and crash the system.
> >
> > Therefore, the current set of OpenNebula scripts in /var/remotes will not
> > work on the cluster. The quick/dirty solution we came up with is to
> create a
> > second version of the remotes scripts that uses our wrappers and place
> them
> > in /var/remotes_cluster. Whenever the remote scripts are copied to or
> > updated on a cluster node host, we would use this directory instead of
> > /var/remotes.
> >
> > I've been looking through the source code and trying to figure out where
> I
> > might be able to add some code that checks to see if hostname belongs to
> our
> > cluster and then use the remotes_cluster directory, and if not, use the
> > normal remotes directory. I thought that maybe in update_remotes() in
> either
> > one/libs/mads/one_im_exec.rb or in one/lib/ruby/CommandManager.rb would
> > work, but I'm having trouble with that. I tried adding in a command to
> the
> > method to create a simple test directory just to see if that was the
> correct
> > place in the code, but I never see the directory created on my nodes. Any
> > ideas? Again, we're using OpenNebula 3.0.
> >
> > Thank you,
> >
> > Greg Stabler
> > Computer Science/MS Candidate
> > School of Computing, McAdams 120
> > Clemson University, Clemson, SC 29634
> > gstable at clemson.edu
> >
> > _______________________________________________
> > Users mailing list
> > Users at lists.opennebula.org
> > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
> >
>
>
>
> --
> Javier Fontán Muiños
> Project Engineer
> OpenNebula - The Open Source Toolkit for Data Center Virtualization
> www.OpenNebula.org | jfontan at opennebula.org | @OpenNebula
>
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