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OpenStack Ussuri : ネットワークを構成する2020/06/05

 
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 タイプのプロバイダー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。
# IP なしインターフェース起動ファイル作成

# インターフェース名 [eth1] は自身の環境に置き換え

root@dlp ~(keystone)#
vi /etc/systemd/network/eth1.network
[Match]
Name=eth1

[Network]
LinkLocalAddressing=no
IPv6AcceptRA=no

root@dlp ~(keystone)#
systemctl restart systemd-networkd

root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 218行目:追記

[ml2_type_flat]
flat_networks = physnet1
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini
# 183行目:追記

[linux_bridge]
physical_interface_mappings = physnet1:eth1
# 250行目:コメント解除して変更

enable_vxlan =
false
root@dlp ~(keystone)#
systemctl restart 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                | 2020-06-04T05:26:44Z                                                 |
| description               |                                                                      |
| dns_domain                | None                                                                 |
| id                        | 979324a4-6c15-4922-961d-22f01791690e                                 |
| ipv4_address_scope        | None                                                                 |
| ipv6_address_scope        | None                                                                 |
| is_default                | False                                                                |
| is_vlan_transparent       | None                                                                 |
| location                  | cloud='', project.domain_id=, project.domain_name=, project.id='c... |
| mtu                       | 1500                                                                 |
| name                      | sharednet1                                                           |
| port_security_enabled     | True                                                                 |
| project_id                | c0e098a54a4640caa9004fb8f500f554                                     |
| 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                | 2020-06-04T05:26:44Z                                                 |
+---------------------------+----------------------------------------------------------------------+

# [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           | 2020-06-04T05:27:19Z                                                       |
| description          |                                                                            |
| dns_nameservers      | 10.0.0.10                                                                  |
| dns_publish_fixed_ip | None                                                                       |
| enable_dhcp          | True                                                                       |
| gateway_ip           | 10.0.0.1                                                                   |
| host_routes          |                                                                            |
| id                   | cd384c9e-6285-4a6e-b280-d9ee74c21425                                       |
| ip_version           | 4                                                                          |
| ipv6_address_mode    | None                                                                       |
| ipv6_ra_mode         | None                                                                       |
| location             | cloud='', project.domain_id=, project.domain_name=, project.id='c0e098a... |
| name                 | subnet1                                                                    |
| network_id           | 979324a4-6c15-4922-961d-22f01791690e                                       |
| prefix_length        | None                                                                       |
| project_id           | c0e098a54a4640caa9004fb8f500f554                                           |
| revision_number      | 0                                                                          |
| segment_id           | None                                                                       |
| service_types        |                                                                            |
| subnetpool_id        | None                                                                       |
| tags                 |                                                                            |
| updated_at           | 2020-06-04T05:27:19Z                                                       |
+----------------------+----------------------------------------------------------------------------+

# 設定確認

root@dlp ~(keystone)#
openstack network list

+--------------------------------------+------------+--------------------------------------+
| ID                                   | Name       | Subnets                              |
+--------------------------------------+------------+--------------------------------------+
| 979324a4-6c15-4922-961d-22f01791690e | sharednet1 | cd384c9e-6285-4a6e-b280-d9ee74c21425 |
+--------------------------------------+------------+--------------------------------------+

root@dlp ~(keystone)#
openstack subnet list

+--------------------------------------+---------+--------------------------------------+-------------+
| ID                                   | Name    | Network                              | Subnet      |
+--------------------------------------+---------+--------------------------------------+-------------+
| cd384c9e-6285-4a6e-b280-d9ee74c21425 | subnet1 | 979324a4-6c15-4922-961d-22f01791690e | 10.0.0.0/24 |
+--------------------------------------+---------+--------------------------------------+-------------+
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