Ubuntu 18.04
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OpenStack Rocky : Neutron ネットワークを構成 (FLAT)2018/09/13

 
OpenStack Network Service(Neutron)による仮想ネットワークの構成です。
例として、FLAT タイプのプロバイダーネットワークを構成します。
事前に以下のように Control ノードNetwork ノードCompute ノードの 各 Neutron サービスノードを構築済みであることが前提です。
また、当例では Network ノードと Compute ノードが二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。また、下例で eth1 の方は IP なしでインターフェースを UP しています。 IP なしでのインターフェース UP の設定はこちらの [1] を参照ください
------------+---------------------------+---------------------------+------------
            |                           |                           |
        eth0|10.0.0.30              eth0|10.0.0.50              eth0|10.0.0.51
+-----------+-----------+   +-----------+-----------+   +-----------+-----------+
|    [ Control Node ]   |   |    [ Network Node ]   |   |    [ Compute Node ]   |
|                       |   |                       |   |                       |
|  MariaDB    RabbitMQ  |   |        L2 Agent       |   |        Libvirt        |
|  Memcached  httpd     |   |        L3 Agent       |   |     Nova Compute      |
|  Keystone   Glance    |   |     Metadata Agent    |   |        L2 Agent       |
|  Nova API             |   |                       |   |                       |
|  Neutron Server       |   |                       |   |                       |
|  Metadata Agent       |   |                       |   |                       |
+-----------------------+   +-----------+-----------+   +-----------+-----------+
                                    eth1|(UP with no IP)        eth1|(UP with no IP)

[1] Network ノード および Compute ノードの両方で以下のように設定します。
root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 181行目:追記

[ml2_type_flat]
flat_networks = physnet1
root@network:~#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini
# 147行目:追記

[linux_bridge]
physical_interface_mappings = physnet1:eth1
# 208行目:コメント解除して変更

enable_vxlan =
false
root@network:~#
systemctl restart neutron-linuxbridge-agent

[2] ネットワークを作成します。作業場所はどこでもよいですが、当例では Control ノード上で作業します。
root@dlp ~(keystone)#
projectID=$(openstack project list | grep service | awk '{print $2}')
# [sharednet1] という名称のネットワークを作成

root@dlp ~(keystone)#
openstack network create --project $projectID \
--share --provider-network-type flat --provider-physical-network physnet1 sharednet1

Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | UP                                   |
| availability_zone_hints   |                                      |
| availability_zones        |                                      |
| created_at                | 2018-09-13T05:29:35Z                 |
| description               |                                      |
| dns_domain                | None                                 |
| id                        | 8b581a42-d71d-432e-9131-ff8acd3155ab |
| ipv4_address_scope        | None                                 |
| ipv6_address_scope        | None                                 |
| is_default                | False                                |
| is_vlan_transparent       | None                                 |
| mtu                       | 1500                                 |
| name                      | sharednet1                           |
| port_security_enabled     | True                                 |
| project_id                | aaeee626080841a491235fb06e77f10c     |
| provider:network_type     | flat                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | None                                 |
| qos_policy_id             | None                                 |
| revision_number           | 0                                    |
| router:external           | Internal                             |
| segments                  | None                                 |
| shared                    | True                                 |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tags                      |                                      |
| updated_at                | 2018-09-13T05:29:35Z                 |
+---------------------------+--------------------------------------+

# [sharednet1] に [10.0.0.0/24] のサブネットを作成

root@dlp ~(keystone)#
openstack subnet create subnet1 --network sharednet1 \
--project $projectID --subnet-range 10.0.0.0/24 \
--allocation-pool start=10.0.0.200,end=10.0.0.254 \
--gateway 10.0.0.1 --dns-nameserver 10.0.0.10

Created a new subnet:
+-------------------+--------------------------------------+
| Field             | Value                                |
+-------------------+--------------------------------------+
| allocation_pools  | 10.0.0.200-10.0.0.254                |
| cidr              | 10.0.0.0/24                          |
| created_at        | 2018-09-13T05:30:04Z                 |
| description       |                                      |
| dns_nameservers   | 10.0.0.10                            |
| enable_dhcp       | True                                 |
| gateway_ip        | 10.0.0.1                             |
| host_routes       |                                      |
| id                | 24d7c49d-a320-4737-8235-4ff6de6c1f16 |
| ip_version        | 4                                    |
| ipv6_address_mode | None                                 |
| ipv6_ra_mode      | None                                 |
| name              | subnet1                              |
| network_id        | 8b581a42-d71d-432e-9131-ff8acd3155ab |
| project_id        | aaeee626080841a491235fb06e77f10c     |
| revision_number   | 0                                    |
| segment_id        | None                                 |
| service_types     |                                      |
| subnetpool_id     | None                                 |
| tags              |                                      |
| updated_at        | 2018-09-13T05:30:04Z                 |
+-------------------+--------------------------------------+

# 設定確認

root@dlp ~(keystone)#
openstack network list

+--------------------------------------+------------+--------------------------------------+
| ID                                   | Name       | Subnets                              |
+--------------------------------------+------------+--------------------------------------+
| 8b581a42-d71d-432e-9131-ff8acd3155ab | sharednet1 | 24d7c49d-a320-4737-8235-4ff6de6c1f16 |
+--------------------------------------+------------+--------------------------------------+
[3] 任意のユーザーでログインし、作成したネットワークをインスタンスに紐付けてインスタンスを作成・起動します。
# 利用可能な flavor 確認

ubuntu@dlp ~(keystone)$
openstack flavor list

+----+----------+------+------+-----------+-------+-----------+
| ID | Name     |  RAM | Disk | Ephemeral | VCPUs | Is Public |
+----+----------+------+------+-----------+-------+-----------+
| 0  | m1.small | 2048 |   10 |         0 |     1 | True      |
+----+----------+------+------+-----------+-------+-----------+

# 利用可能なイメージ確認

ubuntu@dlp ~(keystone)$
openstack image list

+--------------------------------------+------------+--------+
| ID                                   | Name       | Status |
+--------------------------------------+------------+--------+
| 7df9e97e-96aa-45f9-8ffb-fa8685283a70 | Ubuntu1804 | active |
+--------------------------------------+------------+--------+

# 利用可能なネットワーク確認

ubuntu@dlp ~(keystone)$
openstack network list

+--------------------------------------+------------+--------------------------------------+
| ID                                   | Name       | Subnets                              |
+--------------------------------------+------------+--------------------------------------+
| 8b581a42-d71d-432e-9131-ff8acd3155ab | sharednet1 | 24d7c49d-a320-4737-8235-4ff6de6c1f16 |
+--------------------------------------+------------+--------------------------------------+

# インスタンス用のセキュリティグループを作成

ubuntu@dlp ~(keystone)$
openstack security group create secgroup01

+-----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field           | Value                                                                                                                                                 |
+-----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
| created_at      | 2018-09-13T06:21:27Z                                                                                                                                  |
| description     | secgroup01                                                                                                                                            |
| id              | 548287ef-c443-4779-9e9a-f9d44dc0a416                                                                                                                  |
| name            | secgroup01                                                                                                                                            |
| project_id      | 5f54b0ad76274f06b13f29458cc1c036                                                                                                                      |
| revision_number | 1                                                                                                                                                     |
| rules           | created_at='2018-09-13T06:21:27Z', direction='egress', ethertype='IPv6', id='dcff779c-63c8-4135-8d69-5ecf64ab56a0', updated_at='2018-09-13T06:21:27Z' |
|                 | created_at='2018-09-13T06:21:27Z', direction='egress', ethertype='IPv4', id='de808b07-8e0b-4cc4-8cad-40447b20ee10', updated_at='2018-09-13T06:21:27Z' |
| tags            | []                                                                                                                                                    |
| updated_at      | 2018-09-13T06:21:27Z                                                                                                                                  |
+-----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+

# インスタンス接続用の SSH キーペア作成

ubuntu@dlp ~(keystone)$
ssh-keygen -q -N ""

Enter file in which to save the key (/home/ubuntu/.ssh/id_rsa):
# 公開鍵登録

ubuntu@dlp ~(keystone)$
openstack keypair create --public-key ~/.ssh/id_rsa.pub mykey

+-------------+-------------------------------------------------+
| Field       | Value                                           |
+-------------+-------------------------------------------------+
| fingerprint | 04:d4:f6:b2:2d:6c:b4:f2:f4:63:3f:4e:8a:2a:2d:22 |
| name        | mykey                                           |
| user_id     | 54951d6863024516a19ed9bda53be12f                |
+-------------+-------------------------------------------------+

ubuntu@dlp ~(keystone)$
netID=$(openstack network list | grep sharednet1 | awk '{ print $2 }')

ubuntu@dlp ~(keystone)$
openstack server create --flavor m1.small --image Ubuntu1804 --security-group secgroup01 --nic net-id=$netID --key-name mykey Ubuntu_1804
ubuntu@dlp ~(keystone)$
openstack server list

+--------------------------------------+-------------+--------+-----------------------+------------+----------+
| ID                                   | Name        | Status | Networks              | Image      | Flavor   |
+--------------------------------------+-------------+--------+-----------------------+------------+----------+
| df5eb7cb-8d45-4bbc-ae6f-2af1e404a705 | Ubuntu_1804 | ACTIVE | sharednet1=10.0.0.210 | Ubuntu1804 | m1.small |
+--------------------------------------+-------------+--------+-----------------------+------------+----------+
[4] 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。
# ICMP 許可

ubuntu@dlp ~(keystone)$
openstack security group rule create --protocol icmp --ingress secgroup01

+-------------------+--------------------------------------+
| Field             | Value                                |
+-------------------+--------------------------------------+
| created_at        | 2018-10-19T05:41:25Z                 |
| description       |                                      |
| direction         | ingress                              |
| ether_type        | IPv4                                 |
| id                | 1cb3d467-78af-412d-ba7b-d6328ae503fe |
| name              | None                                 |
| port_range_max    | None                                 |
| port_range_min    | None                                 |
| project_id        | 42530f21bf47470ea9283b3ff9f26b5b     |
| protocol          | icmp                                 |
| remote_group_id   | None                                 |
| remote_ip_prefix  | 0.0.0.0/0                            |
| revision_number   | 0                                    |
| security_group_id | 310c16a0-6062-46a8-b056-0326d9299aea |
| updated_at        | 2018-10-19T05:41:25Z                 |
+-------------------+--------------------------------------+

# SSH 許可

ubuntu@dlp ~(keystone)$
openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01

+-------------------+--------------------------------------+
| Field             | Value                                |
+-------------------+--------------------------------------+
| created_at        | 2018-10-19T05:42:10Z                 |
| description       |                                      |
| direction         | ingress                              |
| ether_type        | IPv4                                 |
| id                | 2a8aab5b-7aea-446b-bfb4-3a1622717c13 |
| name              | None                                 |
| port_range_max    | 22                                   |
| port_range_min    | 22                                   |
| project_id        | 42530f21bf47470ea9283b3ff9f26b5b     |
| protocol          | tcp                                  |
| remote_group_id   | None                                 |
| remote_ip_prefix  | 0.0.0.0/0                            |
| revision_number   | 0                                    |
| security_group_id | 310c16a0-6062-46a8-b056-0326d9299aea |
| updated_at        | 2018-10-19T05:42:10Z                 |
+-------------------+--------------------------------------+

ubuntu@dlp ~(keystone)$
openstack security group rule list

+--------------------------------------+-------------+-----------+------------+--------------------------------------+--------------------------------------+
| ID                                   | IP Protocol | IP Range  | Port Range | Remote Security Group                | Security Group                       |
+--------------------------------------+-------------+-----------+------------+--------------------------------------+--------------------------------------+
| 096c82c4-3d27-4cdf-8080-fe91890a9395 | None        | None      |            | None                                 | 4e3708dc-0b32-479c-aa16-d3ea209784ce |
| 1cb3d467-78af-412d-ba7b-d6328ae503fe | icmp        | 0.0.0.0/0 |            | None                                 | 310c16a0-6062-46a8-b056-0326d9299aea |
| 22714aa1-c856-49da-a427-ff6ff6d78036 | icmp        | 0.0.0.0/0 |            | None                                 | 4e3708dc-0b32-479c-aa16-d3ea209784ce |
| 2a8aab5b-7aea-446b-bfb4-3a1622717c13 | tcp         | 0.0.0.0/0 | 22:22      | None                                 | 310c16a0-6062-46a8-b056-0326d9299aea |
| 426cd691-af75-4c9f-9eaf-8726a5376695 | None        | None      |            | 4e3708dc-0b32-479c-aa16-d3ea209784ce | 4e3708dc-0b32-479c-aa16-d3ea209784ce |
| 55ddfd48-2bcf-4ebe-90e6-9aca55a2aff3 | None        | None      |            | None                                 | 310c16a0-6062-46a8-b056-0326d9299aea |
| 5688a833-5b5b-49a8-a02a-12ea32c7db27 | None        | None      |            | None                                 | 4e3708dc-0b32-479c-aa16-d3ea209784ce |
| 5e81e02e-1218-4545-8bb5-16f4844e63e7 | None        | None      |            | 4e3708dc-0b32-479c-aa16-d3ea209784ce | 4e3708dc-0b32-479c-aa16-d3ea209784ce |
| 7509defd-1da8-458f-a60b-701100de5c24 | None        | None      |            | None                                 | 310c16a0-6062-46a8-b056-0326d9299aea |
| b189adbe-3d00-4566-aab6-418339f2f028 | tcp         | 0.0.0.0/0 | 22:22      | None                                 | 4e3708dc-0b32-479c-aa16-d3ea209784ce |
+--------------------------------------+-------------+-----------+------------+--------------------------------------+--------------------------------------+
[5] インスタンスにログインします。
ubuntu@dlp ~(keystone)$
ssh ubuntu@10.0.0.210

The authenticity of host '10.0.0.210 (10.0.0.210)' can't be established.
ECDSA key fingerprint is SHA256:9+uRjCfd1wMMhnl055bzIFcHYGgVx7/8zwWBmXJgfdA.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.0.0.210' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 18.04.1 LTS (GNU/Linux 4.15.0-34-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Thu Sep 13 15:24:46 JST 2018

  System load:  0.45              Processes:           89
  Usage of /:   19.7% of 8.80GB   Users logged in:     0
  Memory usage: 6%                IP address for ens3: 10.0.0.210
  Swap usage:   0%

 * Read about Ubuntu updates for L1 Terminal Fault Vulnerabilities
   (L1TF).

   - https://ubu.one/L1TF

 * Want to make a highly secure kiosk, smart display or touchscreen?
   Here's a step-by-step tutorial for a rainy weekend, or a startup.

   - https://bit.ly/secure-kiosk


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

ubuntu@ubuntu-1804:~$    
# ログインできた
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