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OpenStack Victoria : ネットワークを構成する2021/08/31

 
仮想マシンインスタンスが利用するネットワークを構成します。
All in One 構成の Neutron サービス または ノード毎に分離設定した Neutron サービスを事前に構成済みであることが前提です。
当例では、以下のような All in One 構成の環境を前提に、シンプルな FLAT タイプのネットワークを構成します。
また、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ものとします。
        eth0|10.0.0.30 
+-----------+-----------+
|    [ Control Node ]   |
|                       |
|  MariaDB    RabbitMQ  |
|  Memcached  httpd     |
|  Keystone   Glance    |
|   Nova API,Compute    |
|    Neutron Server     |
|  L2,L3,Metadata Agent |
+-----------+-----------+
        eth1|(UP with no IP)

[1] Neutron サービスに追加設定します。
# [eth1] の設定変更 (IP なしでインターフェース起動)

# [eth1] の名称は自身の環境の名称に置き換え

root@dlp ~(keystone)#
vi /etc/network/interfaces
auto eth1
iface eth1 inet manual
root@dlp ~(keystone)#
ifup eth1

root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 174行目 : 変更

[ml2_type_flat]
.....
.....
flat_networks =
physnet1
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini
# 162行目 : 追記

[linux_bridge]
physical_interface_mappings = physnet1:eth1
root@dlp ~(keystone)#
systemctl restart neutron-api neutron-rpc-server neutron-linuxbridge-agent

[2] 仮想ネットワークを構成します。
root@dlp ~(keystone)#
projectID=$(openstack project list | grep service | awk '{print $2}')
# [sharednet1] という名称の仮想ネットワーク作成

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

+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | UP                                   |
| availability_zone_hints   |                                      |
| availability_zones        |                                      |
| created_at                | 2021-08-31T02:42:15Z                 |
| description               |                                      |
| dns_domain                | None                                 |
| id                        | 487dfa9b-0503-4b4f-be43-83b10853035b |
| 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                | 1718217eee4b4f2ea143d65122864fe0     |
| provider:network_type     | flat                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | None                                 |
| qos_policy_id             | None                                 |
| revision_number           | 1                                    |
| router:external           | Internal                             |
| segments                  | None                                 |
| shared                    | True                                 |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tags                      |                                      |
| updated_at                | 2021-08-31T02:42:15Z                 |
+---------------------------+--------------------------------------+

# [sharednet1] に [10.0.0.0/24] のサブネット追加

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

+----------------------+--------------------------------------+
| Field                | Value                                |
+----------------------+--------------------------------------+
| allocation_pools     | 10.0.0.200-10.0.0.254                |
| cidr                 | 10.0.0.0/24                          |
| created_at           | 2021-08-31T02:42:49Z                 |
| description          |                                      |
| dns_nameservers      | 10.0.0.10                            |
| dns_publish_fixed_ip | None                                 |
| enable_dhcp          | True                                 |
| gateway_ip           | 10.0.0.1                             |
| host_routes          |                                      |
| id                   | 823a48aa-5525-421e-b75b-1a1e72fb44c6 |
| ip_version           | 4                                    |
| ipv6_address_mode    | None                                 |
| ipv6_ra_mode         | None                                 |
| name                 | subnet1                              |
| network_id           | 487dfa9b-0503-4b4f-be43-83b10853035b |
| prefix_length        | None                                 |
| project_id           | 1718217eee4b4f2ea143d65122864fe0     |
| revision_number      | 0                                    |
| segment_id           | None                                 |
| service_types        |                                      |
| subnetpool_id        | None                                 |
| tags                 |                                      |
| updated_at           | 2021-08-31T02:42:49Z                 |
+----------------------+--------------------------------------+

# 設定確認

root@dlp ~(keystone)#
openstack network list

+--------------------------------------+------------+--------------------------------------+
| ID                                   | Name       | Subnets                              |
+--------------------------------------+------------+--------------------------------------+
| 487dfa9b-0503-4b4f-be43-83b10853035b | sharednet1 | 823a48aa-5525-421e-b75b-1a1e72fb44c6 |
+--------------------------------------+------------+--------------------------------------+

root@dlp ~(keystone)#
openstack subnet list

+--------------------------------------+---------+--------------------------------------+-------------+
| ID                                   | Name    | Network                              | Subnet      |
+--------------------------------------+---------+--------------------------------------+-------------+
| 823a48aa-5525-421e-b75b-1a1e72fb44c6 | subnet1 | 487dfa9b-0503-4b4f-be43-83b10853035b | 10.0.0.0/24 |
+--------------------------------------+---------+--------------------------------------+-------------+
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