Ubuntu 14.04
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OpenStack Liberty : Neutron ネットワーク構成(VXLAN)
2015/12/27
 
OpenStack Network Service(Neutron)による仮想ネットワークの構成です。
例として、VXLAN タイプのプロバイダーネットワークを構成します。
Control ノードNetwork ノードCompute ノードはそれぞれ事前に基本設定をしておいてください。
また、Network ノードと Compute ノードはネットワークインターフェースを二つ持っていることを前提とします。

                                        |
  +-------------+                  +----+----+
  | 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      |  |     |       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] Control ノードで以下のように設定変更します。
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 8行目あたり: tenant_network_types に値を追記

tenant_network_types =
vxlan
# 66行目あたり:追記

[ml2_type_flat]
flat_networks = physnet1
# 89行目あたり:追記

[ml2_type_vxlan]
vni_ranges = 1:1000
root@dlp ~(keystone)#
initctl restart neutron-server

[2] Network ノードで以下のように設定変更します。
root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 8行目あたり: tenant_network_types に値を追記

tenant_network_types =
vxlan
# 66行目あたり:追記

[ml2_type_flat]
flat_networks = physnet1
# 89行目あたり:追記

[ml2_type_vxlan]
vni_ranges = 1:1000
root@network:~#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini
# 2行目:追記

[linux_bridge]
physical_interface_mappings = vlan:eth0,physnet1:eth1
# 14行目あたり:追記 (local_ip は物理インターフェースのIPを指定)

[vxlan]
enable_vxlan = True
local_ip = 10.0.0.50
l2_population = True
# 48行目あたり:追記

[agent]
prevent_arp_spoofing = True
root@network:~#
vi /etc/neutron/dhcp_agent.ini
# 75行目あたり:追記

dnsmasq_config_file = /etc/neutron/dnsmasq-neutron.conf
root@network:~#
vi /etc/neutron/dnsmasq-neutron.conf
# 新規作成

dhcp-option-force=26,1450
root@network:~#
for service in l3-agent dhcp-agent metadata-agent plugin-linuxbridge-agent; do
initctl restart neutron-$service
done

[3] Compute ノードで以下のように設定変更します。
root@node01:~#
echo 'net.bridge.bridge-nf-call-iptables=1' >> /etc/sysctl.conf

root@node01:~#
echo 'net.bridge.bridge-nf-call-ip6tables=1' >> /etc/sysctl.conf

root@node01:~#
sysctl -p

root@node01:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 8行目あたり: tenant_network_types に値を追記

tenant_network_types =
vxlan
# 66行目あたり:追記

[ml2_type_flat]
flat_networks = physnet1
# 89行目あたり:追記

[ml2_type_vxlan]
vni_ranges = 1:1000
root@node01:~#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini
# 2行目:追記

[linux_bridge]
physical_interface_mappings = vlan:eth0
# 14行目あたり:追記 (local_ip は物理インターフェースのIPを指定)

[vxlan]
enable_vxlan = True
local_ip = 10.0.0.51
l2_population = True
# 48行目あたり:追記

[agent]
prevent_arp_spoofing = True
root@node01:~#
initctl restart neutron-plugin-linuxbridge-agent

[4] 仮想ルータを作成しておきます。作業場所はどこでもよいですが、ここでは Control ノード上で作業します。
# 仮想ルーター作成

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

Created a new router:
+-----------------------+--------------------------------------+
| Field                 | Value                                |
+-----------------------+--------------------------------------+
| admin_state_up        | True                                 |
| distributed           | False                                |
| external_gateway_info |                                      |
| ha                    | False                                |
| id                    | 267273d2-2509-4824-96e9-6ed879896abb |
| name                  | router01                             |
| routes                |                                      |
| status                | ACTIVE                               |
| tenant_id             | fa7d34414b8c45c4a2fdc29403fb5cd2     |
+-----------------------+--------------------------------------+

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

[5] 内部用のネットワークを作成し、仮想ルーターに関連付けます。
# 内部用ネットワーク作成

root@dlp ~(keystone)#
tenantID=`openstack project list | grep service | awk '{print $2}'`

root@dlp ~(keystone)#
neutron net-create int_net --tenant-id $tenantID --provider:network_type vxlan

Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | c352c783-37d5-40c4-8e50-0d0d6e44fa21 |
| mtu                       | 0                                    |
| name                      | int_net                              |
| port_security_enabled     | True                                 |
| provider:network_type     | vxlan                                |
| provider:physical_network |                                      |
| provider:segmentation_id  | 16                                   |
| router:external           | False                                |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_id                 | ba3f5997c2474c13b36e6f6bc47a264c     |
+---------------------------+--------------------------------------+

# 内部用ネットワークにサブネット作成

root@dlp ~(keystone)#
neutron subnet-create \
--gateway 192.168.100.1 --dns-nameserver 10.0.0.1 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   | 10.0.0.1                                             |
| enable_dhcp       | True                                                 |
| gateway_ip        | 192.168.100.1                                        |
| host_routes       |                                                      |
| id                | 7e3e5878-b69b-427c-b24d-ac9cbdf284ce                 |
| ip_version        | 4                                                    |
| ipv6_address_mode |                                                      |
| ipv6_ra_mode      |                                                      |
| name              |                                                      |
| network_id        | c352c783-37d5-40c4-8e50-0d0d6e44fa21                 |
| subnetpool_id     |                                                      |
| tenant_id         | fa7d34414b8c45c4a2fdc29403fb5cd2                     |
+-------------------+------------------------------------------------------+

root@dlp ~(keystone)#
Int_Subnet_ID=`neutron net-list | grep int_net | awk '{ print $6 }'`
# 仮想ルーターに内部ネットワークを設定

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

Added interface 4c2fba63-b262-45ec-8043-11033446f5fa to router 267273d2-2509-4824-96e9-6ed879896abb.
[6] 外部接続用のネットワークを作成し、仮想ルーターに関連付けます。
# 外部用ネットワーク作成

root@dlp ~(keystone)#
neutron net-create ext_net --router:external True --provider:physical_network physnet1 --provider:network_type flat

Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | f1c05750-2dbe-4e9e-9b56-ca4107f54160 |
| mtu                       | 0                                    |
| name                      | ext_net                              |
| port_security_enabled     | True                                 |
| provider:network_type     | flat                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  |                                      |
| router:external           | True                                 |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_id                 | fa7d34414b8c45c4a2fdc29403fb5cd2     |
+---------------------------+--------------------------------------+

# 外部用ネットワークにサブネット作成

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 10.0.0.1 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   | 10.0.0.1                                     |
| enable_dhcp       | False                                        |
| gateway_ip        | 10.0.0.1                                     |
| host_routes       |                                              |
| id                | 30dee5b0-0504-4575-be0e-455ac25a68d4         |
| ip_version        | 4                                            |
| ipv6_address_mode |                                              |
| ipv6_ra_mode      |                                              |
| name              |                                              |
| network_id        | f1c05750-2dbe-4e9e-9b56-ca4107f54160         |
| subnetpool_id     |                                              |
| tenant_id         | fa7d34414b8c45c4a2fdc29403fb5cd2             |
+-------------------+----------------------------------------------+

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

# 仮想ルーターにゲートウェイを設定

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

Set gateway for router 267273d2-2509-4824-96e9-6ed879896abb
[7] 内部ネットワークを関連付けた仮想マシンインスタンスを作成して起動します。
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 |
+--------------------------------------+------------+--------+--------+
| f29a589b-595a-4f0c-bbce-f6f3537f2a7c | Ubuntu1404 | ACTIVE |        |
+--------------------------------------+------------+--------+--------+

root@dlp ~(keystone)#
nova boot --flavor 2 --image Ubuntu1404 --security_group default --nic net-id=$Int_Net_ID Ubuntu_1404

root@dlp ~(keystone)#
nova list

+-----------+-------------+--------+------------+-------------+-----------------------+
| ID        | Name        | Status | Task State | Power State | Networks              |
+-----------+-------------+--------+------------+-------------+-----------------------+
| a25ba5e7- | Ubuntu_1404 | ACTIVE | -          | Running     | int_net=192.168.100.3 |
+-----------+-------------+--------+------------+-------------+-----------------------+
[8] 作成した仮想マシンインスタンスにフローティングIPを割り当てます。
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 | f1c05750-2dbe-4e9e-9b56-ca4107f54160 |
| id                  | 8b3abead-1695-4f11-8e62-3f18d160a776 |
| port_id             |                                      |
| router_id           |                                      |
| status              | DOWN                                 |
| tenant_id           | fa7d34414b8c45c4a2fdc29403fb5cd2     |
+---------------------+--------------------------------------+

root@dlp ~(keystone)#
Device_ID=`nova list | grep Ubuntu_1404 | awk '{ print $2 }'`

root@dlp ~(keystone)#
Port_ID=`neutron port-list -- --device_id $Device_ID | grep 192.168.100.3 | 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 floating IP 8b3abead-1695-4f11-8e62-3f18d160a776
# 設定確認

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

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| fixed_ip_address    | 192.168.100.3                        |
| floating_ip_address | 10.0.0.201                           |
| floating_network_id | f1c05750-2dbe-4e9e-9b56-ca4107f54160 |
| id                  | 8b3abead-1695-4f11-8e62-3f18d160a776 |
| port_id             | a80f5a55-3956-4f0a-9fa8-43ea5521c968 |
| router_id           | 267273d2-2509-4824-96e9-6ed879896abb |
| status              | ACTIVE                               |
| tenant_id           | fa7d34414b8c45c4a2fdc29403fb5cd2     |
+---------------------+--------------------------------------+
[9] 起動した仮想マシンインスタンスにSSHで接続できるように、デフォルトセキュリティグループにポート許可の設定をしておきます。
# ICMP 許可

root@dlp ~(keystone)#
neutron security-group-rule-create --direction ingress --protocol icmp default

Created a new security_group_rule:
+-------------------+--------------------------------------+
| Field             | Value                                |
+-------------------+--------------------------------------+
| direction         | ingress                              |
| ethertype         | IPv4                                 |
| id                | eb5f5557-397b-4662-aa28-a85e67a6d5c1 |
| port_range_max    |                                      |
| port_range_min    |                                      |
| protocol          | icmp                                 |
| remote_group_id   |                                      |
| remote_ip_prefix  |                                      |
| security_group_id | 29cb0389-e33a-4e65-9db5-6e3e18901a07 |
| tenant_id         | fa7d34414b8c45c4a2fdc29403fb5cd2     |
+-------------------+--------------------------------------+

# SSH 許可

root@dlp ~(keystone)#
neutron security-group-rule-create --direction ingress --protocol tcp --port_range_min 22 --port_range_max 22 default

Created a new security_group_rule:
+-------------------+--------------------------------------+
| Field             | Value                                |
+-------------------+--------------------------------------+
| direction         | ingress                              |
| ethertype         | IPv4                                 |
| id                | 96c37376-3cd2-4499-abb0-cb6efc0702fd |
| port_range_max    | 22                                   |
| port_range_min    | 22                                   |
| protocol          | tcp                                  |
| remote_group_id   |                                      |
| remote_ip_prefix  |                                      |
| security_group_id | 29cb0389-e33a-4e65-9db5-6e3e18901a07 |
| tenant_id         | fa7d34414b8c45c4a2fdc29403fb5cd2     |
+-------------------+--------------------------------------+

root@dlp ~(keystone)#
neutron security-group-rule-list

+--------------------------------------+----------------+-----------+-----------+---------------+-----------------+
| id                                   | security_group | direction | ethertype | protocol/port | remote          |
+--------------------------------------+----------------+-----------+-----------+---------------+-----------------+
| 67c6be2e-640f-4c3b-9b46-367366c0afeb | default        | ingress   | IPv4      | any           | default (group) |
| 96c37376-3cd2-4499-abb0-cb6efc0702fd | default        | ingress   | IPv4      | 22/tcp        | any             |
| a3779b4e-2042-4264-b8d0-3d3ffb5c6fec | default        | ingress   | IPv6      | any           | default (group) |
| d8566bc8-46ac-4118-adca-2dd0b3d61893 | default        | egress    | IPv6      | any           | any             |
| eb5f5557-397b-4662-aa28-a85e67a6d5c1 | default        | ingress   | IPv4      | icmp          | any             |
| ee3585ff-23fb-42db-baa7-c3271bdd8c77 | default        | egress    | IPv4      | any           | any             |
+--------------------------------------+----------------+-----------+-----------+---------------+-----------------+
[10] 仮想マシンインスタンスに割りあてたフローティングIPあてに SSH 接続することで、インスタンスにログインできます。
root@dlp ~(keystone)#
ssh trusty@10.0.0.201

trusty@10.0.0.201's password:
Welcome to Ubuntu 14.04.3 LTS (GNU/Linux 3.13.0-74-generic x86_64)

 * Documentation:  https://help.ubuntu.com/

0 packages can be updated.
0 updates are security updates.

Last login: Mon Dec 28 22:43:11 2015
trusty@ubuntu:~$    
# ログインできた
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