Here's is a quick improvement in the docs: https://github.com/OpenNebula/docs/blob/master/source/user/references/template.rst#predefined-host-attributes
Regards. -- Carlos Martín, MSc Project Engineer OpenNebula - Flexible Enterprise Cloud Made Simple www.OpenNebula.org | cmar...@opennebula.org | @OpenNebula <http://twitter.com/opennebula> <cmar...@opennebula.org> On Fri, Oct 24, 2014 at 4:40 PM, Carlos Martín Sánchez < cmar...@opennebula.org> wrote: > Hi Steven, > > On Sat, Oct 11, 2014 at 6:05 AM, Steven C Timm <t...@fnal.gov> wrote: > >> During most of the time we have been running OpenNebula 2 and 3 we have >> been using a >> rank based on FREEMEMORY. We are now doing tests using OpenNebula 4.8, >> in a use case >> where we are filling up an empty cloud. FREEMEMORY still in theory >> should be an accurate value >> > > FREEMEMORY hasn't been a Host attribute for a few versions. I can't > remember exactly when it was removed, but it is not part of the host now. > > The predefined variables you can use in the rank or requirements are [1]: > > NAME > MAX_CPU > MAX_MEM > FREE_MEM > FREE_CPU > USED_MEM > USED_CPU > HYPERVISOR > > By the way, I see this list is buried too deep in the docs, so I'll try to > move it to a new section and explain each attribute. > > >> but the problem is that 6-7 VM's are typically being launched on every >> SCHED cycle and so a >> node that starts out with all of its memory free will end up full of >> virtual machines in a single cycle. >> >> Once we got to a full cloud and steady-state it would be fine but when >> you have 8 VM's >> starting at once on an old 8-core node, it takes much longer than it >> otherwise would. >> >> Any cheap suggestions to get the default scheduler to do a more >> horizontal fill? >> >> Steve Timm >> > > In /etc/one/sched.conf [2] you can set MAX_HOST to 1. This forces the > scheduler to launch one VM to each host per cycle. Combined with the > SCHED_INTERVAL, you can configure a slower deployment rate. > > Best regards, > Carlos. > > [1] > http://docs.opennebula.org/4.8/user/references/template.html#requirement-expression-syntax > [2] http://docs.opennebula.org/4.8/administration/references/schg.html > -- > Carlos Martín, MSc > Project Engineer > OpenNebula - Flexible Enterprise Cloud Made Simple > www.OpenNebula.org <http://www.opennebula.org/> | cmar...@opennebula.org > | @OpenNebula <http://twitter.com/opennebula> <cmar...@opennebula.org> > > >
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