Open Stack

On 11/09/2013 07:09 PM, Martinx - ジェームズ wrote:
> Guys,
>
> This problem is kind of a "deal breaker"... I was counting on OpenStack
> Havana (and with Ubuntu) for my first public cloud that I'm (was) about
> to announce / launch but, this problem changed everything.
>
> I can not put Havana with Ubuntu LTS into production because of this
> network issue. This is a very serious problem for me... Since all sites,
> or even ssh connections, that pass through the "Floating IPs" entering
> into the tenant's subnets, are very slow and, all the connections
> freezes for seconds, every minute.
>
> Again, I'm seeing that there is no way to put Havana into production
> (using Per-Tenant Routers with Private Networks), _because the Network
> Node is broken_. At least when with Ubuntu... I'll try it with Debian 7,
> or CentOS (I don't like it), just to see if the problem persist but, I
> prefer Ubuntu distro since Warty Warthog...    :-/
>
> So, what is being done to fix it? I already tried everything I could,
> without any kind of success...
>
> Also, I followed this doc (to triple * triple re-check my env):
> http://docs.openstack.org/havana/install-guide/install/apt/content/section_networking-routers-with-private-networks.html but,
> it does not work as expected.

I'd just like to point out that it is indeed possible to achieve good 
network performance (bi-directional) with Ubuntu 12.04, OVS 1.11, and 
OpenStack Grizzly with Neutron and GRE tunnels. We've deployed two zones 
with it and after upgrading to OVS 1.11, we are seeing pretty good 
performance.

We use the OpenStack Chef cookbooks to configure Neutron:

https://github.com/stackforge/cookbook-openstack-network

You may want to go through the above cookbook and check the default 
settings that are in the attributes and written to the configuration 
file templates.

I don't know of anything that changed between Grizzly and Havana that 
would have had an impact on network performance, but perhaps someone 
from the Neutron dev community could chime in here and write if there's 
been anything added in the Havana timeframe that may affect network 
performance...

Best,
-jay