[Crowbar] Size of your OpenStack Deployment?
kbringard at atti.com
Tue Jan 24 08:42:46 CST 2012
This is only partially correct; you are correct that in Flat mode nova
doesn't do anything with networking... it'll just spin up a VM and assume
that you have everything setup to properly assign an IP, route to the
meta-data API, etc. I believe floating IPs are still handled by the
network-controller, though, but I'm not 100% sure (I've never used Flat
In FlatDHCP mode the network controller is the default gateway for VMs by
default (unless you pass them a different gateway via the
dhcpoption=3,<gateway IP> in the dnsmasq.conf). Vms will also not get an
external address automatically unless you specify
--auto_assign_floating_ip=true in your nova.conf. By default it will NAT
out through the network controller (and all Vms will source from the same
external IP until they are assigned a floating ip).
If you're interested in a good quick overview of networking in nova, this
is a great blog (written by Vishy):
From: Neil Jubinville <neil at orbitalsoftware.ca>
Reply-To: "neil at orbitalsoftware.ca" <neil at orbitalsoftware.ca>
Date: Mon, 23 Jan 2012 22:08:32 -0800
To: "crowbar at dell.com" <crowbar at dell.com>
Subject: Re: [Crowbar] Size of your OpenStack Deployment?
FYI - In both flat modes, the network
nodes do not act as a default gateway. Instances are given public
IP addresses. Compute nodes have iptables/ebtables entries created
per project and instance to protect against IP/MAC address
spoofing and ARP poisoning.
On 1/23/2012 10:55 PM, Shake Chen wrote:
On Tue, Jan 24, 2012 at 12:19 AM, Gregor
von Laszewski <laszewski at gmail.com>
I was wondering about the current size of your
deployments and which versions you are running. Can you let
We are trying to put together a relatively large
deployment across several clusters and before we co down the
wrong path we like to get your feedback. We have more than
4000 cores in our testbed.
How many servers are dedicated to Openstack?
about 100 server at the first step.
Are you running multiple Zones?
I think I need the feature, but not test.
How many VMs are you managing with your OpenStack deployment?
Abount 1000 VM
Which version of OpenStack do you run?
Essex in Ubuntu 12.04, I hope
Have you encountered any difficulties that one should
how the monitor the haddisk and raid?
maybe also need to consider how to avoid ARP attack.
Is there a contact person that I can talk to about your
you can contact me .
Shake Chen ( shake.chen at gmail.com)
Gregor von Laszewski
Crowbar mailing list
Crowbar at dell.com
For more information:
msn：shake.chen at hotmail.com
Crowbar mailing list
Crowbar at dell.comhttps://lists.us.dell.com/mailman/listinfo/crowbar
For more information: https://github.com/dellcloudedge/crowbar/wiki
Orbital Software Solutions Inc.
neil at orbitalsoftware.ca
More information about the Crowbar