[Openstack] Neutron network node setup
Erich Weiler
weiler at soe.ucsc.edu
Mon Apr 7 04:43:08 UTC 2014
OK, one step closer to this but still not quite there... in
ovs_neutron_plugin.ini on my network node I have:
tenant_network_type = vlan
network_vlan_ranges = physnet1:200:209,Extnet
bridge_mappings = physnet1:br-eth2,Extnet:br-ex
and when I run this command I get an error:
# neutron net-create ext-net --provider:network_type=flat
--provider:physical_network Extnet --shared --router:external=True
400-{u'NeutronError': {u'message': u'Invalid input for operation:
Unknown provider:physical_network Extnet.', u'type': u'InvalidInput',
u'detail': u''}}
I'm not sure how it's not seeing that Extnet isn't there, I defined it
in the plugin.ini file on the network node... On the controller node I
even tried to put that same plugin.ini info in there (even though the
controller node doesn't have br-eth2) as a test, still doesn't work.
Any ideas where it's not finding "physical_network Extnet"? I think I'm
very close here but just am an inch away...
Thanks again!
cheers,
erich
On 4/2/14, 11:05 PM, Ageeleshwar Kandavelu wrote:
> Maruf was correct.
>
> Also in your plugin.ini you have associate each physical network to a
> bridge. And each of those bridges should have one physical network
> interface attached.
>
> In my previous mail i gave an example where I associated Extnet to
> br-ex. Then add eth2 to br-ex. Then your external network(ext-net) would
> be overlaid on top of Extnet, bridged to br-ex, then traffic flows
> outside through eth2.
>
> Thank you,
> Ageeleshwar K
> ------------------------------------------------------------------------
> *From:* Md. Maruful Hassan [mrf.mnm at gmail.com]
> *Sent:* Thursday, April 03, 2014 9:29 AM
> *To:* Erich Weiler
> *Cc:* Ageeleshwar Kandavelu; Alex Yang; openstack at lists.openstack.org
> *Subject:* Re: [Openstack] Neutron network node setup
>
> You need to use 'flat' instead of 'local' and specify physical_network .
> so modify
>
> neutron net-create ext-net --provider:network_type=local --shared
> --router:external=True
>
> to
>
> neutron net-create ext-net --provider:network_type=flat
> --provider:physical_network Extnet --shared --router:external=True
>
> Extnet is the name you configured in plugin.ini as bridge_mapping
>
> - Maruf
>
> --
> m at ruf
>
>
> On Thu, Apr 3, 2014 at 9:37 AM, Erich Weiler <weiler at soe.ucsc.edu
> <mailto:weiler at soe.ucsc.edu>> wrote:
>
> Hi Ageeleshwar,
>
> I *think* I see what you are saying - is this correct? First, I
> create a flat external network:
>
> # neutron net-create ext-net --provider:network_type=local --shared
> --router:external=True
>
>
> Created a new network:
> +---------------------------+-__------------------------------__-------+
> | Field | Value |
> +---------------------------+-__------------------------------__-------+
> | admin_state_up | True |
> | id | 71b4b5b9-e744-4c67-9b62-__4f64ab727e47 |
> | name | ext-net |
> | provider:network_type | local |
> | provider:physical_network | |
> | provider:segmentation_id | |
> | router:external | True |
> | shared | True |
>
> | status | ACTIVE |
> | subnets | |
> | tenant_id | 36687b1d611740bd9e7309432b22db__cd |
> +---------------------------+-__------------------------------__-------+
>
> # neutron subnet-create ext-net --allocation-pool
> start=134.145.112.10,end=134.__145.112.100 --gateway=134.145.112.1
> --enable_dhcp=False 134.145.112.0/24 <http://134.145.112.0/24>
>
> Created a new subnet:
> +------------------+----------__------------------------------__--------------+
> | Field | Value
> |
> +------------------+----------__------------------------------__--------------+
> | allocation_pools | {"start": "134.145.112.10", "end":
> "134.145.112.100"} |
> | cidr | 134.145.112.0/26 <http://134.145.112.0/26>
> |
> | dns_nameservers |
> |
> | enable_dhcp | False
> |
> | gateway_ip | 134.145.112.1
> |
> | host_routes |
> |
> | id | 6082cdb3-98bc-4fbe-a0fb-__ff264ea7384f
> |
> | ip_version | 4
> |
> | name |
> |
> | network_id | 71b4b5b9-e744-4c67-9b62-__4f64ab727e47
> |
> | tenant_id | 36687b1d611740bd9e7309432b22db__cd
> |
> +------------------+----------__------------------------------__--------------+
>
> Create a router from ext-to-int for my demo tenant:
>
> # neutron router-create ext-to-int --tenant-id
> f7e61747885045d8b266a161310c00__94
> Created a new router:
> +-----------------------+-----__------------------------------__---+
> | Field | Value |
> +-----------------------+-----__------------------------------__---+
> | admin_state_up | True |
> | external_gateway_info | |
> | id | 4ca4292c-8954-4f21-acd6-__b0044e0d02cb |
> | name | ext-to-int |
> | status | ACTIVE |
> | tenant_id | f7e61747885045d8b266a161310c00__94 |
> +-----------------------+-----__------------------------------__---+
>
> Set my router gateway:
>
> # neutron router-gateway-set 4ca4292c-8954-4f21-acd6-__b0044e0d02cb
> 71b4b5b9-e744-4c67-9b62-__4f64ab727e47
>
> Set gateway for router 4ca4292c-8954-4f21-acd6-__b0044e0d02cb
>
> Create a tenant-network with a VLAN:
>
> # neutron net-create --tenant-id f7e61747885045d8b266a161310c00__94
> demo-net --provider:network_type vlan --provider:physical_network
> physnet1 --provider:segmentation_id 201
>
>
> Created a new network:
> +---------------------------+-__------------------------------__-------+
> | Field | Value |
> +---------------------------+-__------------------------------__-------+
> | admin_state_up | True |
> | id | 37190389-df4b-49c0-81b9-__05aa6411a81b |
> | name | demo-net |
>
> | provider:network_type | vlan |
> | provider:physical_network | physnet1 |
> | provider:segmentation_id | 201 |
>
> | shared | False |
> | status | ACTIVE |
> | subnets | |
> | tenant_id | f7e61747885045d8b266a161310c00__94 |
> +---------------------------+-__------------------------------__-------+
>
> Create demo-net subnet:
>
> # neutron subnet-create --tenant-id
> f7e61747885045d8b266a161310c00__94 demo-net 10.200.0.0/16
> <http://10.200.0.0/16> --gateway 10.200.0.1
>
> Created a new subnet:
> +------------------+----------__------------------------------__----------+
> | Field | Value |
> +------------------+----------__------------------------------__----------+
> | allocation_pools | {"start": "10.200.0.2", "end": "10.200.255.254"} |
> | cidr | 10.200.0.0/16 <http://10.200.0.0/16>
> |
> | dns_nameservers | |
> | enable_dhcp | True |
> | gateway_ip | 10.200.0.1 |
> | host_routes | |
> | id | da53e0df-fb00-46ad-a709-__6eaeda13e23f
> |
> | ip_version | 4 |
> | name | |
> | network_id | 37190389-df4b-49c0-81b9-__05aa6411a81b
> |
> | tenant_id | f7e61747885045d8b266a161310c00__94
> |
> +------------------+----------__------------------------------__----------+
>
> Set the router for demo-net:
>
> # neutron router-interface-add
> 4ca4292c-8954-4f21-acd6-__b0044e0d02cb
> da53e0df-fb00-46ad-a709-__6eaeda13e23f
>
> Added interface 250215bf-fe8b-40ed-aeb9-__e284427ec432 to router
> 4ca4292c-8954-4f21-acd6-__b0044e0d02cb.
>
> And that should work yes? With a flat ext-net and a VLAN-based
> internal net for my tenant net demo-net?
>
> Thanks so much for you help! The guides don't really go into this
> kind of detail...
>
> -erich
>
>
> On 4/2/14, 3:07 AM, Ageeleshwar Kandavelu wrote:
>
> Make your external network flat. If you do so there wont be any
> vlan tag
> on packets reaching your external network.
>
> in you plugin.ini you put something like this
> network_vlan_ranges = Intnet1:100:200,Extnet
> bridge_mappings = Intnet1:br-eth1,Extnet:br-ex
>
> This means you would use vlan id 100 to 200 on openstack networks
> created on top of Intnet1.
>
> On Extnet you would not use any vlan.
>
> Then you say that to all traffic on network created on Intnet1
> should be
> bridged to br-eth1. Then you would add eth1 to br-eth1.
>
> Then you say all traffic for Extnet should be bridged to br-ex.
> Then you
> have to add a physical interface say eth2 to br-ex.
>
> Finally you can create an external network in openstack with
> physical_network=Extnet.
>
> You just said that all internal network shall be created and
> Intnet1 and
> allocated vlan from 100 to 200.
> External network shall be overlaid on top of Extnet and no vlans.
>
> Hope it makes sense.
>
> Ageeleshwar K
>
>
> ------------------------------__------------------------------__------------
> *From:* Alex Yang [alex890714 at gmail.com
> <mailto:alex890714 at gmail.com>]
> *Sent:* Wednesday, April 02, 2014 7:09 AM
> *To:* Erich Weiler
> *Cc:* openstack at lists.openstack.org
> <mailto:openstack at lists.openstack.org>
> *Subject:* Re: [Openstack] Neutron network node setup
>
>
> Hi Erich,
>
> I think this following articles may helpful for you.
>
> http://developer.rackspace.__com/blog/categories/__networking/
> <http://developer.rackspace.com/blog/categories/networking/>
>
>
>
> 2014-04-02 5:59 GMT+08:00 Erich Weiler <weiler at soe.ucsc.edu
> <mailto:weiler at soe.ucsc.edu>
> <mailto:weiler at soe.ucsc.edu <mailto:weiler at soe.ucsc.edu>>>:
>
>
> Hey Y'all,
>
> I'm setting up a dedicated neutron network node and I'm
> having a bit
> of trouble understanding the way the networks work. On the
> network
> node I have one interface on the public net (eth0), one
> interface on
> the private net (eth1) and I'm following these guides to
> set it up.
>
> My plan is to have eth0 on the public network, no VLAN
> magic there
> or anything. eth1 will be the data interface, and it will be
> connected to a trunk switchport so it can use VLANs for tenant
> isolation (OVS VLAN plugin).
>
> I ran this command to set up ext-net:
>
> neutron net-create ext-net --router:external=True
>
> Created a new network:
>
> +---------------------------+-____----------------------------__--__-------+
> | Field | Value
> |
>
> +---------------------------+-____----------------------------__--__-------+
> | admin_state_up | True
> |
> | id |
> a5599b54-dbfc-42fa-b5b9-____e8ebd574ded0 |
>
> | name | ext-net
> |
> | provider:network_type | vlan
> |
> | provider:physical_network | physnet1
> |
> | provider:segmentation_id | 200
> |
> | router:external | True
> |
> | shared | False
> |
> | status | ACTIVE
> |
> | subnets |
> |
> | tenant_id |
> 36687b1d611740bd9e7309432b22db____cd |
>
> +---------------------------+-____----------------------------__--__-------+
>
>
>
> But, I don't think network_type=vlan right? As eth0 just
> sits right
> on a public network? Should network_type=local instead? Also,
> should physical_network equal null, and also
> segmentation_id equal
> null as well?
>
> I would understand type=vlan and seg_id and such for a tenant
> network, but for ext-net?
>
> Any hints would be greatly appreciated...!
>
> -erich
>
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> --
> 杨雨
> Email: alex890714 at gmail.com <mailto:alex890714 at gmail.com>
> <mailto:alex890714 at gmail.com <mailto:alex890714 at gmail.com>>
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