Ubuntu 14.04
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OpenStack Icehouse : ネットワーク構成#2
2014/05/23
 
OpenStack Network Service(Neutron)による仮想ネットワークの設定です。
例として、VLAN ネットワークを構成してみます。
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、ここでは、Network ノードが三つのネットワークインターフェースを持っているものとします。
さらに、Compute ノードは二つのネットワークインターフェースを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      |  | 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] 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
# 36行目あたりに追記

[ml2_type_vlan]
network_vlan_ranges = physnet1:1000:2999
# 最終行に追記

[ovs]
tenant_network_type = vlan
bridge_mappings = physnet1:br-eth1
root@dlp ~(keystone)#
service neutron-server restart

neutron-server stop/waiting
neutron-server start/running, process 4044
[2] Network ノード、および、Compute ノードの両方で以下のように設定変更します。
root@network:~#
ovs-vsctl add-br br-eth1
   
# ブリッジ追加

root@network:~#
ovs-vsctl add-port br-eth1 eth1
   
# 追加したブリッジのポートにeth1を追加

root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 36行目あたりに追記

[ml2_type_vlan]
network_vlan_ranges = physnet1:1000:2999
# 最終行に追記

[ovs]
tenant_network_type = vlan
bridge_mappings = physnet1:br-eth1
root@network:~#
service neutron-plugin-openvswitch-agent restart

neutron-plugin-openvswitch-agent stop/waiting
neutron-plugin-openvswitch-agent start/running, process 1993
[3] Network ノードで外部接続用のブリッジの作成と定義をしておきます。
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
# 47行目:追記

external_network_bridge =
br-ext
root@network:~#
service neutron-l3-agent restart

neutron-l3-agent stop/waiting
neutron-l3-agent start/running, process 2227
[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                                 |
| external_gateway_info |                                      |
| id                    | cbbdfe73-9bab-4c57-b5db-effd35a8d8a6 |
| name                  | router01                             |
| status                | ACTIVE                               |
| tenant_id             | 0bf06fa0415043cb924ead3db08e2518     |
+-----------------------+--------------------------------------+

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)#
neutron net-create int_net

Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | efbaf2fc-cb84-4bfe-bc6a-48514748986f |
| name                      | int_net                              |
| provider:network_type     | vlan                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | 1000                                 |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_id                 | 0bf06fa0415043cb924ead3db08e2518     |
+---------------------------+--------------------------------------+

# 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 10.0.0.10 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               | d7da5b07-f780-45a8-a706-ed10a2cd1513                 |
| ip_version       | 4                                                    |
| name             |                                                      |
| network_id       | efbaf2fc-cb84-4bfe-bc6a-48514748986f                 |
| tenant_id        | 0bf06fa0415043cb924ead3db08e2518                     |
+------------------+------------------------------------------------------+

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 f04f2566-6767-4506-8926-8a435b80d588 to router f4f52ce0-d9a0-441e-9a21-24a3d7966654.
[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

Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | 07811ebd-e62d-43a8-866c-1f84d37276c5 |
| 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                 | 0bf06fa0415043cb924ead3db08e2518     |
+---------------------------+--------------------------------------+

# 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 10.0.0.10 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               | e1fe23f4-44d7-4f5b-b051-b4f8e0785101         |
| ip_version       | 4                                            |
| name             |                                              |
| network_id       | 07811ebd-e62d-43a8-866c-1f84d37276c5         |
| tenant_id        | 0bf06fa0415043cb924ead3db08e2518             |
+------------------+----------------------------------------------+

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 f4f52ce0-d9a0-441e-9a21-24a3d7966654
[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 |
+--------------------------------------+-------------+--------+--------+
| 98c7ba58-512f-4750-a0ff-3b892753f096 | Ubuntu14.04 | ACTIVE |        |
+--------------------------------------+-------------+--------+--------+

root@dlp ~(keystone)#
nova boot --flavor 2 --image Ubuntu14.04 --security_group default --nic net-id=$Int_Net_ID Ubuntu_Trusty

root@dlp ~(keystone)#
nova list

+-----------+---------------+--------+------------+-------------+-----------------------+
| ID        | Name          | Status | Task State | Power State | Networks              |
+-----------+---------------+--------+------------+-------------+-----------------------+
| ff1046c2- | Ubuntu_Trusty | ACTIVE | -          | Running     | int_net=192.168.100.2 |
+-----------+---------------+--------+------------+-------------+-----------------------+
[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 | 07811ebd-e62d-43a8-866c-1f84d37276c5 |
| id                  | 1c7385f2-e285-4db8-b0a1-39ed7565dfc2 |
| port_id             |                                      |
| router_id           |                                      |
| status              | DOWN                                 |
| tenant_id           | 0bf06fa0415043cb924ead3db08e2518     |
+---------------------+--------------------------------------+

root@dlp ~(keystone)#
Device_ID=`nova list | grep Ubuntu_Trusty | 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 1c7385f2-e285-4db8-b0a1-39ed7565dfc2
# 設定確認

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 | 07811ebd-e62d-43a8-866c-1f84d37276c5 |
| id                  | 1c7385f2-e285-4db8-b0a1-39ed7565dfc2 |
| port_id             | 867b7476-3cc2-434a-8ba5-a6c448aa8d3f |
| router_id           | f4f52ce0-d9a0-441e-9a21-24a3d7966654 |
| status              | ACTIVE                               |
| tenant_id           | 0bf06fa0415043cb924ead3db08e2518     |
+---------------------+--------------------------------------+
[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。
# SSH 許可

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 |              |
+-------------+-----------+---------+-----------+--------------+

# ICMP 許可

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] 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

The authenticity of host '10.0.0.200 (10.0.0.200)' can't be established.
ECDSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:af:3d:00.
Are you sure you want to continue connecting (yes/no)?
yes

Warning: Permanently added '10.0.0.200' (ECDSA) to the list of known hosts.
trusty@10.0.0.200's password:
Welcome to Ubuntu 14.04 LTS (GNU/Linux 3.13.0-24-generic x86_64)
* Documentation: https://help.ubuntu.com/
Last login: Thu May 15 21:11:26 2014
trusty@host-192-168-100-2:~$    
# ログインできた
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