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Omar,

After you have configured all your networks/vlans with "nova-manage 
network create", no vlan interfaces and no bridges will be created on 
the nova-network node and the nova-compute nodes. The first vlan 
interface and bridge will only be created the first time you boot an 
instance for a given tenant.

If you boot for the first time an instance for a given tenant:

- a free network/vlan will be attributed to that tenant and this for ever;
- a vlan interface with a bridge and a dhcp connected on it will be 
created on the nova-network node;
- a vlan interface with a bridge connected on it will be created on the 
nova-compute node which has been chosen to run the instance.

Eric


On 05/17/2012 06:06 AM, Omar Lara wrote:
> Thanks Nathanael, so the bridges and vlans are created until the 
> instance is created?, because my understanding was that the interfaces 
> were created once the network create is applied, and the interface 
> appears in nova-network node and nova-compute node, is it right?
>
> Omar L.
>
> On 05/16/2012 10:13 PM, Nathanael Burton wrote:
>>
>>
>> On May 16, 2012 9:47 PM, "Omar Lara" <omar at scasoftware.net 
>> <mailto:omar at scasoftware.net>> wrote:
>> >
>> > Hi, i am trying to deploy a VlanManager networking model in Essex, 
>> i am not using Quantum, and my problem is when i try to do:
>> >
>> > nova-manage network create --label vlan1 --fixed_range_v4 
>> 10.0.1.0/24 <http://10.0.1.0/24> --num_networks 1 --network_size 256 
>> --vlan 1 --project_id 2e744c1a2032ccb1a0cdf7c5f825d046
>> >
>> > The bridge and the vlan are not created immediately, do you have 
>> any idea if there is another daemon that needs to run or something so 
>> or some additional advice, my nova-network is a server different from 
>> the nova-compute.
>> >
>> > Also i noticed that the ensure_bridge method from linux_net.py 
>> never is called, in this script there is the brctl addbr call to posix.
>> >
>> > root at devlabnova:~# nova-manage  network list
>> > id       IPv4                  IPv6               start address     
>>  DNS1               DNS2               VlanID             project     
>>        uuid
>> > 20 10.0.1.0/24 <http://10.0.1.0/24>           None               
>> 10.0.1.3           None               None               1           
>>        2e744c1a2032ccb1a0cdf7c5f825d046               
>> a667af77-8ffe-42f8-a094-c2ce71d59171
>> >
>> > root at devlabnova:~# brctl show
>> > bridge name    bridge id        STP enabled    interfaces
>> >
>> >
>> > My nova.conf is as follows in terms of nova-network
>> >
>> > ##### nova-network #####
>> > network_manager=nova.network.manager.VlanManager
>> > public_interface=eth0
>> > vlan_interface=eth1
>> > network_host=devlabnova
>> > fixed_range=10.0.0.0/8 <http://10.0.0.0/8>
>> > network_size=1024
>> > dhcpbridge_flagfile=/etc/nova/nova.conf
>> > dhcpbridge=/usr/bin/nova-dhcpbridge
>> > force_dhcp_release=True
>> > fixed_ip_disassociate_timeout=30
>> > my_ip=172.16.16.10
>> >
>> > Thanks in advance!
>> >
>> > --
>> > -------------------------------------
>> > Omar Lara
>> > CEO
>> > ScaSoftware
>> > t: +52(55) 84.21.84.43
>> > Twitter: @elchito
>> > http://www.scasoftware.net
>> > -------------------------------------
>> >
>> >
>> > _______________________________________________
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>> <https://launchpad.net/%7Eopenstack>
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>>
>> Omar,
>>
>> The vlan tagged interfaces and bridges are created on the fly as 
>> needed as users within the relevant projects start instances that are 
>> scheduled to the relevant compute nodes.
>>
>> Nate
>>
>
>
> -- 
> -------------------------------------
> Omar Lara
> CEO
> ScaSoftware
> t: +52(55) 84.21.84.43
> Twitter: @elchito
> http://www.scasoftware.net
> -------------------------------------
>
>
> _______________________________________________
> Mailing list: https://launchpad.net/~openstack
> Post to     : openstack at lists.launchpad.net
> Unsubscribe : https://launchpad.net/~openstack
> More help   : https://help.launchpad.net/ListHelp

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