Hi Tim
What I'd like to see is the best of both worlds. Users write Datalog policies
describing whatever VM-placement policy they want. If the policy they've
written is on the solver-scheduler's list of options, we use the hard-coded
implementation, but if the policy isn't on that list we
Hello Debo/Tim
My understanding is that with Congress things like filters (e.g. anti-affinity
or other aggregates) will be replaced to be written as policies with Datalog.
Goals (a Policy), Constraints (policies in Congress) will also get translated
to (for example) linear programs in some
Hello
o) custom constraint class
What did you mean by the “custom” constraint class?
Did you mean we specify a “meta model” to specify constraints? And then each
“Policy” specifying a constraint ( ) will lead to generation of the constraint
in that meta-model.
Then the solver-scheduler
Hi
I'd like to participate.
By when will you fix the meeting date ?
Ruby
De : Tim Hinrichs [mailto:thinri...@vmware.com]
Envoyé : lundi 16 mars 2015 19:05
À : OpenStack Development Mailing List (not for usage questions)
Objet : [openstack-dev] [Congress] [Delegation] Meeting scheduling
Hi all,
My first suggestion: why don’t we set up call together with Ramki, Yathi, Debo,
as soon as possible ?
- How to go forward concretely with the 8 steps for the PoC (details
within each step),
oIncluding nova integration points
- Identify “friction points” in the details
Tim:“So you’re saying we won’t have fresh enough data to make policy decisions?
If the data changes so frequently that we can’t get an accurate view, then I’m
guessing we shouldn’t be migrating based on that data anyway.”
Ramki: We have to keep in mind that VM migration could be an expensive
Hi Tim, All,
1) Step 3: The VM-placement engine is also a datalog engine . Right?
When policies are delegated:
when policies are inserted? When the VM-placement engine has already registered
itself all policies are given to it?
In our example, this would mean the domain-specific
Hi
Did you mean placement at “two levels”. First to select the region and then
within each region, Nova scheduler will place on hosts.
But where will the capabilities of each region (based on which placement
decision will be made) be stored? Will each region be queried to obtain this
