Open Stack

Hi David,

thanks alot, that was it :)

I find it very hard, to get a list of all supported options in nova.conf
(and the other confs as well) and what they mean. Is there an easy
overview of all of them???

Greetings
-Sascha-

Am 24.01.2014 15:47, schrieb David Wittman:
> It sounds like you may have `share_dhcp_address` set to True in your
> nova.conf:
> 
> https://github.com/openstack/nova/blob/master/etc/nova/nova.conf.sample#L1231-L1235
> 
> Dave
> 
> 
> On Fri, Jan 24, 2014 at 7:22 AM, Sascha Vogt <sascha.vogt at gmail.com
> <mailto:sascha.vogt at gmail.com>> wrote:
> 
>     Hi all,
> 
>     I have a Multi-Node, Single-NIC setup. All machines only have a single
>     NIC. I created a virtual network (using gretap tunnels - aka
>     layer2-over-layer3 tunnel) to connect all machines and have one br-int
>     bridge which all VMs are attached to.
> 
>     nova-network runs on all machines and correctly binds dnsmasq to the
>     hosts bridge itself, though I noticed that each host-bridge gets the .1
>     IP. This seems to work, because dnsmasq is configured by nova-network to
>     only answer to DHCP requests the specific instance has a MAC address
>     for, though I find it a bit irritating.
> 
>     I try to give a picture of it:
> 
>     controller
>         - br-int (dnsmasq with .1 address)
>             - gretap tunnel to compute-1 (using the static IPs of eth0)
>             - gretap tunnel to compute-2 (using the static IPs of eth0)
>             - vnet1-n (instances running on this host)
>         - eth0 (routes between external network and br-int, NAT / ip
>                 forwarding active, static IP used also for OpenStack
>                 managing)
> 
>     compute-1
>         - br-int (dnsmasq with .1 address)
>             - gretap tunnel to controller (using the static IPs of eth0)
>             - vnet1-n (instances running on this host)
>         - eth0 (OpenStack managing)
> 
>     compute-2
>         - br-int (dnsmasq with .1 address)
>             - gretap tunnel to controller (using the static IPs of eth0)
>             - vnet1-n (instances running on this host)
>         - eth0 (OpenStack managing)
> 
>     I'm using the FlatDHCPManager, and if you substitue eth0/the-switch in
>     this picture
>     http://www.mirantis.com/wp-content/uploads/2012/07/flat-dhcp-networking-diagrams-4.png
>     with the gretap tunnels I basically have that topology. In that picture
>     the dnsmasqs/br100 have different IPs. How did they get that? ;)
> 
>     Greetings
>     -Sascha-