Open Stack

Tzach asks some good questions.

I can say that configuration looks like a good compute node to me
(again depending on how you answer Tzach's questions), but it's almost
certainly over sized as a controller node.

My controller is dual socket 6 core system with 48G RAM to control 64
compute nodes running 500-1000 VMs.  Typically this runs at 10-25%
load with peaks of 50-60%

As I look to bring in more compute nodes and anticipate higher VM
counts I'm looking to scale out the controller services by adding more
controllers in active/active configuration rather than scaling up the
single server it's running on.

-Jon

On Wed, Feb 26, 2014 at 9:45 AM, Tzach Shefi <tshefi at redhat.com> wrote:
> Dear Pekka,
>
> Lets start with a few basic questions:
>
> 1. Are you going to run your Openstack on this single server, AIO (All In One) setup?
>
> 2. If you plan on more than one server, is it going to be a few servers 2-5 or much more 10-20+ servers down the line?
>
> 3. What operating system do you plan to use for server it self? And which one for instances (in Openstack speak vm's are refereed to as instances, for a good reason..).
>
> Can't say for sure (yet) but from your answers you might find out that openstack isn't the best tool for your needs.
>
> Also recommend watching below youtube, which explains the deference between virtualization (in this case vmware) and cloud solutions.
> https://www.youtube.com/watch?v=1JAHopy-aVs
>
> Regards,
> Tzach Shefi
>
>
>
>
> ----- Original Message -----
> From: "Pääkkönen Pekka" <Pekka.Paakkonen at vtt.fi>
> To: openstack-operators at lists.openstack.org
> Sent: Wednesday, February 26, 2014 3:20:42 PM
> Subject: [Openstack-operators]  Configuration for Dell R820
>
>
>
> Hi,
>
>
>
> I am planning OpenStack configuration for a server rack with the following spec:
>
> Dell PowerEdge R820:
>
> + 4 processors (Intel Xeon E5-4620), 8 cores/processor
>
> + 512 GB RAM
>
> + 8 HDD, 1 TB/disk
>
> + 2*1Gb, 2*10Gb network cards
>
>
>
> How would it be reasonable to configure controller and compute nodes in terms of vCPUs and memory?
>
>
>
> I am planning to use one controller due to shortage of public IP addresses, and I am wondering how many compute nodes I should use?
>
>
>
> A use case of interest is execution of database instances in OpenStack with a write heavy workload.
>
> I was hinted in the "Ask OpenStack"-service that 32 GB, 2 vCPUs per virtual machine may be a good starting point.
>
>
>
> Regards,
>
> -Pekka Pääkkönen
>
>
>
>
>
>
>
>
>
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