Open Stack

Hi Sascha,

Following URL gives you an easy overview of all configuration options available in OpenStack compute service.
http://docs.openstack.org/havana/config-reference/content/list-of-compute-config-options.html


Thanks and  Best Regards,
Tushar Patil.

>-----Original Message-----
>From: Sascha Vogt [mailto:sascha.vogt at gmail.com]
>Sent: Friday, January 24, 2014 6:54 AM
>To: David Wittman
>Cc: openstack at lists.openstack.org
>Subject: Re: [Openstack] Havana / nova-network - Multi-Node setup, dnsmasq uses
>the same IP on multiple nodes
>
>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.sampl
>> e#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-
>
>
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