CentOS 6
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OpenStack Icehouse : Neutron Networking#2(VLAN)
2014/06/25
 
Configure virtual networking by OpenStack Network Service (Neutron).
For example, configure VLAN networking on here.
Before it, Configure basic settings on Control Node, Network Node, Compute Node.
Furthermore, this example is based on the environment that Network Node has 3 network interfaces and alsp Compute Node has 2 network interfaces.

                                        |
  +-------------+                  +----+----+
  | Name Server |                  | Gateway |
  +------+------+                  +----+----+
         |10.0.0.10                     |10.0.0.1
         |                              |
         +------------+-----------------+------------------------+
         |            |                 |                        |
         |            |                 |              10.0.0.200-10.0.0.254
     eth0|10.0.0.30   |        10.0.0.50| eth0          +--------+-------+
+--------+---------+  |     +-----------+----------+    | Virtual Router |
| [ Control Node ] |  |     |   [ Network Node ]   |    +--------+-------+
|     Keystone     |  |     |       DHCP Agent     |       192.168.100.1
|      Glance      |  | eth2|       L3 Agent       |eth1         |            192.168.100.0/24
|     Nova API     |  |     |       L2 Agent       |             |           +-----------------+
|  Neutron Server  |  |     |    Metadata Agent    |             |       +---| Virtual Machine |
+------------------+  |     +----------------------+             |       |   +-----------------+
                      |                                          |       |   +-----------------+
                      |     +----------------------+             +-------+---| Virtual Machine |
                      | eth0|   [ Compute Node ]   |eth1                 |   +-----------------+
                      +-----|     Nova Compute     |                     |   +-----------------+
                   10.0.0.51|       L2 Agent       |                     |---| Virtual Machine |
                            +----------------------+                     |   +-----------------+
                                                                         |   +-----------------+
                                                                         +---| Virtual Machine |
                                                                             +-----------------+
[1] Change settings like follows on Control Node.
[root@dlp ~(keystone)]#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# line 36: add

[ml2_type_vlan]
network_vlan_ranges = physnet1:1000:2999
# add at the last line

[ovs]
tenant_network_type = vlan
bridge_mappings = physnet1:br-eth1
[root@dlp ~(keystone)]#
/etc/rc.d/init.d/neutron-server restart

Stopping neutron: [  OK  ]
Starting neutron: [  OK  ]
[2] Change settings like follows on both Network Node and Compute Node.
[root@network ~]#
ovs-vsctl add-br br-eth1
# add a bridge

[root@network ~]#
ovs-vsctl add-port br-eth1 eth1
# add eth1 to the port of the bridge above

[root@network ~]#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# line 36: add

[ml2_type_vlan]
network_vlan_ranges = physnet1:1000:2999
# add at the last line

[ovs]
tenant_network_type = vlan
bridge_mappings = physnet1:br-eth1
[root@network ~]#
/etc/rc.d/init.d/neutron-openvswitch-agent restart

Stopping neutron-openvswitch-agent:                        [  OK  ]
Starting neutron-openvswitch-agent:                        [  OK  ]
[3] Create and define a bridge for external network on Network Node.
[root@network ~]#
ovs-vsctl add-br br-ext

[root@network ~]#
ovs-vsctl add-port br-ext eth2

[root@network ~]#
vi /etc/neutron/l3_agent.ini
# line 47: add

external_network_bridge =
br-ext
[root@network ~]#
/etc/rc.d/init.d/neutron-l3-agent restart

Stopping neutron-l3-agent: [  OK  ]
Starting neutron-l3-agent: [  OK  ]
[4] Create a Virtual router. It's OK to work on any node. (This example is on Control Node)
# create a virtual router

[root@dlp ~(keystone)]#
neutron router-create router01

Created a new router:
+-----------------------+--------------------------------------+
| Field                 | Value                                |
+-----------------------+--------------------------------------+
| admin_state_up        | True                                 |
| external_gateway_info |                                      |
| id                    | 272a5007-2c61-4cd0-b69f-feae268a82ce |
| name                  | router01                             |
| status                | ACTIVE                               |
| tenant_id             | 6af6c82883db4dd399833237e64609bf     |
+-----------------------+--------------------------------------+

[root@dlp ~(keystone)]#
Router_ID=`neutron router-list | grep router01 | awk '{ print $2 }'`

[5] Create internal network and associate with the router above.
# create internal network

[root@dlp ~(keystone)]#
neutron net-create int_net

Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | 58daad73-ae23-4337-ad2b-fd4f1d9b46ea |
| name                      | int_net                              |
| provider:network_type     | vlan                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | 1000                                 |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_id                 | 6af6c82883db4dd399833237e64609bf     |
+---------------------------+--------------------------------------+

# create subnet in the internal network

[root@dlp ~(keystone)]#
neutron subnet-create \
--gateway 192.168.100.1 --dns-nameserver 10.0.0.10 int_net 192.168.100.0/24

Created a new subnet:
+------------------+------------------------------------------------------+
| Field            | Value                                                |
+------------------+------------------------------------------------------+
| allocation_pools | {"start": "192.168.100.2", "end": "192.168.100.254"} |
| cidr             | 192.168.100.0/24                                     |
| dns_nameservers  | 10.0.0.10                                            |
| enable_dhcp      | True                                                 |
| gateway_ip       | 192.168.100.1                                        |
| host_routes      |                                                      |
| id               | a4f25d5b-4069-4f72-a8a7-b3d5dc5b6edd                 |
| ip_version       | 4                                                    |
| name             |                                                      |
| network_id       | 58daad73-ae23-4337-ad2b-fd4f1d9b46ea                 |
| tenant_id        | 6af6c82883db4dd399833237e64609bf                     |
+------------------+------------------------------------------------------+

[root@dlp ~(keystone)]#
Int_Subnet_ID=`neutron net-list | grep int_net | awk '{ print $6 }'`
# set internal network to the router above

[root@dlp ~(keystone)]#
neutron router-interface-add $Router_ID $Int_Subnet_ID

Added interface 9f6da48a-6e63-4dd5-aa41-74a9a8b8dea6 to router 272a5007-2c61-4cd0-b69f-feae268a82ce.
[6] Create external network and associate with the router above.
# create external network

[root@dlp ~(keystone)]#
neutron net-create ext_net --router:external=True

Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | ac62454d-7be4-411d-946c-8ffcd59bfb39 |
| name                      | ext_net                              |
| provider:network_type     | vlan                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | 1001                                 |
| router:external           | True                                 |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_id                 | 6af6c82883db4dd399833237e64609bf     |
+---------------------------+--------------------------------------+

# create subnet in external network

[root@dlp ~(keystone)]#
neutron subnet-create ext_net \
--allocation-pool start=10.0.0.200,end=10.0.0.254 \
--gateway 10.0.0.1 --dns-nameserver 10.0.0.10 10.0.0.0/24 --disable-dhcp

Created a new subnet:
+------------------+----------------------------------------------+
| Field            | Value                                        |
+------------------+----------------------------------------------+
| allocation_pools | {"start": "10.0.0.200", "end": "10.0.0.254"} |
| cidr             | 10.0.0.0/24                                  |
| dns_nameservers  | 10.0.0.10                                    |
| enable_dhcp      | False                                        |
| gateway_ip       | 10.0.0.1                                     |
| host_routes      |                                              |
| id               | 12f71209-1730-41bb-84d1-7fbdd5069350         |
| ip_version       | 4                                            |
| name             |                                              |
| network_id       | ac62454d-7be4-411d-946c-8ffcd59bfb39         |
| tenant_id        | 6af6c82883db4dd399833237e64609bf             |
+------------------+----------------------------------------------+

[root@dlp ~(keystone)]#
Ext_Net_ID=`neutron net-list | grep ext_net | awk '{ print $2 }'`

# set gateway to the router above

[root@dlp ~(keystone)]#
neutron router-gateway-set $Router_ID $Ext_Net_ID

Set gateway for router 272a5007-2c61-4cd0-b69f-feae268a82ce
[7] Create and start Virtual machine Instance.
[root@dlp ~(keystone)]#
Int_Net_ID=`neutron net-list | grep int_net | awk '{ print $2 }'`

[root@dlp ~(keystone)]#
nova image-list

+--------------------------------------+---------+--------+--------+
| ID                                   | Name    | Status | Server |
+--------------------------------------+---------+--------+--------+
| bbbe2faf-f533-4f06-855c-ac33fb9e4209 | CentOS6 | ACTIVE |        |
+--------------------------------------+---------+--------+--------+

[root@dlp ~(keystone)]#
nova boot --flavor 2 --image CentOS6 --security_group default --nic net-id=$Int_Net_ID CentOS_65

[root@dlp ~(keystone)]#
nova list

+-----------+-----------+--------+------------+-------------+-----------------------+
| ID        | Name      | Status | Task State | Power State | Networks              |
+-----------+-----------+--------+------------+-------------+-----------------------+
| 11be97d4- | CentOS_65 | ACTIVE | -          | Running     | int_net=192.168.100.2 |
+-----------+-----------+--------+------------+-------------+-----------------------+
[8] Assign floating IP address to the Instance above.
[root@dlp ~(keystone)]#
neutron floatingip-create ext_net

Created a new floatingip:
+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| fixed_ip_address    |                                      |
| floating_ip_address | 10.0.0.201                           |
| floating_network_id | ac62454d-7be4-411d-946c-8ffcd59bfb39 |
| id                  | d1ef564f-507b-4552-9a3c-19403d8498e1 |
| port_id             |                                      |
| router_id           |                                      |
| status              | DOWN                                 |
| tenant_id           | 6af6c82883db4dd399833237e64609bf     |
+---------------------+--------------------------------------+

[root@dlp ~(keystone)]#
Device_ID=`nova list | grep CentOS_65 | awk '{ print $2 }'`

[root@dlp ~(keystone)]#
Port_ID=`neutron port-list -- --device_id $Device_ID | grep 192.168.100.2 | awk '{ print $2 }'`

[root@dlp ~(keystone)]#
Floating_ID=`neutron floatingip-list | grep 10.0.0.201 | awk '{ print $2 }'`

[root@dlp ~(keystone)]#
neutron floatingip-associate $Floating_ID $Port_ID

Associated floatingip d1ef564f-507b-4552-9a3c-19403d8498e1
# confirm settings

[root@dlp ~(keystone)]#
neutron floatingip-show $Floating_ID

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| fixed_ip_address    | 192.168.100.2                        |
| floating_ip_address | 10.0.0.201                           |
| floating_network_id | ac62454d-7be4-411d-946c-8ffcd59bfb39 |
| id                  | d1ef564f-507b-4552-9a3c-19403d8498e1 |
| port_id             | 8e9c0edf-fddf-4b50-b645-4a4325874285 |
| router_id           | 272a5007-2c61-4cd0-b69f-feae268a82ce |
| status              | ACTIVE                               |
| tenant_id           | 6af6c82883db4dd399833237e64609bf     |
+---------------------+--------------------------------------+
[9] Configure security settings like follows to access with SSH and ICMP.
# permit SSH

[root@dlp ~(keystone)]#
nova secgroup-add-rule default tcp 22 22 0.0.0.0/0

+-------------+-----------+---------+-----------+--------------+
| IP Protocol | From Port | To Port | IP Range  | Source Group |
+-------------+-----------+---------+-----------+--------------+
| tcp         | 22        | 22      | 0.0.0.0/0 |              |
+-------------+-----------+---------+-----------+--------------+

# permit ICMP

[root@dlp ~(keystone)]#
nova secgroup-add-rule default icmp -1 -1 0.0.0.0/0

+-------------+-----------+---------+-----------+--------------+
| IP Protocol | From Port | To Port | IP Range  | Source Group |
+-------------+-----------+---------+-----------+--------------+
| icmp        | -1        | -1      | 0.0.0.0/0 |              |
+-------------+-----------+---------+-----------+--------------+

[root@dlp ~(keystone)]#
nova secgroup-list-rules default

+-------------+-----------+---------+-----------+--------------+
| IP Protocol | From Port | To Port | IP Range  | Source Group |
+-------------+-----------+---------+-----------+--------------+
| tcp         | 22        | 22      | 0.0.0.0/0 |              |
| icmp        | -1        | -1      | 0.0.0.0/0 |              |
+-------------+-----------+---------+-----------+--------------+
[10] It's possible to login to the Instance to connect to the IP address with SSH like follows.
[root@dlp ~(keystone)]#
ssh 10.0.0.201

The authenticity of host '10.0.0.201 (10.0.0.201)' can't be established.
RSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:76:84:a6.
Are you sure you want to continue connecting (yes/no)?
yes

Warning: Permanently added '10.0.0.201' (RSA) to the list of known hosts.
root@192.168.100.3's password:
Last login: Thu Jun 26 01:50:50 2014
[root@host-10.0.0.201 ~]#
# just logined
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