Open Stack

Hello.

On 04/18/2012 12:13 PM, makay22 at wp.pl wrote:
> I dont see any possibility to configure zones in nova module .

With zone do you mean the availability zone? It's possible to set the
zones of the nova services in the nova.conf using the parameter
"node_availability_zone".

---snip---
###### (StrOpt) availability zone of this node
# node_availability_zone="nova"
---snap---

It's possible to divide availability zones in aggregates. Have a look at
https://blueprints.launchpad.net/nova/+spec/host-aggregates for further
details and use the "aggregate" commands of the novaclient.

> I see information that now they are called "cells", but i dont see it also .
> Where i can find cell configuration module in that release.

A cell is a full blown environment and it should be possible to route
requests from one cell into an other cell. You can define child cells
and parent cells.

But I'm not sure if this feature is still available. The last time I
played with cells (or zones..) I had several commands in the novaclient
(zone-list, zone-info, ..) and several parameters in nova.conf. But they
are not there at the moment.

Some more details are noted here:
https://answers.launchpad.net/nova/+question/161259.

Ans I think this commit is interesting:

---snip---
commit 26227b79e9246a87eeb83766cfcc8e96d294d28b
Author: Sandy Walsh <sandy at sandywalsh.com>
Date:   Mon Jan 30 13:10:50 2012 -0800

    Removed zones from api and distributed scheduler

    There is a new Zones implementation coming that will use AMQP-to-AMQP
    channels vs. the public API. This is being done for three reasons:
    1. remove complications in the OpenStack API (and possibly allow EC2
Zones)
    2. remove dependencies on keystone and novaclient
    3. faster scheduling (fewer chances for race conditions)

    Learn more here:
    http://wiki.openstack.org/EssexSchedulerImprovements

    Change-Id: I6fe538923dd5ae19276afac2ac3311a285fd5c99
---snap---

HTH, Christian.

-- 
Christian Berendt
Solution Architect
Mail: berendt at b1-systems.de

B1 Systems GmbH
Osterfeldstraße 7 / 85088 Vohburg / http://www.b1-systems.de
GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt,HRB 3537