Just wanted to let you know that sahara has move to server groups for
anti-affinity. This is IMHO the way we should so it as well.
Susanne
Jenkins (Code Review) rev...@openstack.org
5:46 PM (0 minutes ago)
to Andrew, Sahara, Alexander, Sergey, Michael, Sergey, Vitaly, Dmitry,
Trevor
Jenkins has
Brandon
I am not sure how ready that nova feature is for general use and have asked
our nova lead about that. He is on vacation but should be back by the start
of next week. I believe this is the right approach for us moving forward.
We cannot make it mandatory to run the 2 filters but we can
Yeah we were looking at the SameHost and DifferentHost filters and that
will probably do what we need. Though I was hoping we could do a
combination of both but we can make it work with those filters I
believe.
Thanks,
Brandon
On Thu, 2014-08-28 at 14:56 -0400, Susanne Balle wrote:
Brandon
I'm trying to think of a use case that wouldn't be satisfied using those
filters and am not coming up with anything. As such, I don't see a problem
using them to fulfill our requirements around colocation and apolocation.
Stephen
On Thu, Aug 28, 2014 at 1:13 PM, Brandon Logan
Trevor and I just worked through some scenarios to make sure it can
handle colocation and apolocation. It looks like it does, however not
everything will so simple, especially when we introduce horizontal
scaling. Trevor's going to write up an email about some of the caveats
but so far just
We need to be careful. I believe that a user can use these filters to keep
requesting VMs in the case of nova to get to the size of your cloud.
Also given that nova now has ServerGroups let's not make a quick decision
on using something that is being replaced with something better. I suggest
we
Hello all,
TL;DR
Using the SameHostFilter and DifferentHostFilter will work functionally
for what Octavia needs for colocation, apolocation, and HA
anti-affinity. There are a couple topics that need discussed:
How should VMs be allocated per host when evaluating colocation, if each
load
We may have to put quotas or something built into Octavia. Since we are
keeping the concept of tenant in Octavia, this may as well be done.
That probably doesn't totally solve the problem though.
ServerGroups will be great to use for keeping VMs off the same host for
HA. It will be tough to use
Nova scheduler has ServerGroupAffinityFilter and
ServerGroupAntiAffinityFilter which does the colocation and apolocation
for VMs. I think this is something we've discussed before about taking
advantage of nova's scheduling. I need to verify that this will work
with what we (RAX) plan to do, but
