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OpenStack Stein : ネットワークを構成する2019/05/16

 
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。
# ブリッジ追加

[root@dlp ~(keystone)]#
ovs-vsctl add-br br-eth1

# 追加したブリッジのポートにeth1を追加

[root@dlp ~(keystone)]#
ovs-vsctl add-port br-eth1 eth1

[root@dlp ~(keystone)]#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 181行目:追記

[ml2_type_flat]
flat_networks = physnet1
[root@dlp ~(keystone)]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini
# 194行目:追記

[ovs]
bridge_mappings = physnet1:br-eth1
[root@dlp ~(keystone)]#
systemctl restart neutron-openvswitch-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                | 2019-05-15T02:15:17Z                                                   |
| description               |                                                                        |
| dns_domain                | None                                                                   |
| id                        | 4c2ee747-c9f8-4bbb-b1a1-5fa8752a7878                                   |
| ipv4_address_scope        | None                                                                   |
| ipv6_address_scope        | None                                                                   |
| is_default                | False                                                                  |
| is_vlan_transparent       | None                                                                   |
| location                  | Munch({'project': Munch({'domain_name': None, 'domain_id': None, ...}) |
| mtu                       | 1500                                                                   |
| name                      | sharednet1                                                             |
| port_security_enabled     | True                                                                   |
| project_id                | c5e87c9b460e4f16801b4102019c97e6                                       |
| 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                | 2019-05-15T02:15:18Z                                                   |
+---------------------------+------------------------------------------------------------------------+

# 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        | 2019-05-15T02:16:08Z                                                              |
| description       |                                                                                   |
| dns_nameservers   | 10.0.0.10                                                                         |
| enable_dhcp       | True                                                                              |
| gateway_ip        | 10.0.0.1                                                                          |
| host_routes       |                                                                                   |
| id                | 630959d2-cdee-41e4-8501-626064ad1d0f                                              |
| ip_version        | 4                                                                                 |
| ipv6_address_mode | None                                                                              |
| ipv6_ra_mode      | None                                                                              |
| location          | Munch({'project': Munch({'domain_name': None, 'domain_id': None, 'name': None...) |
| name              | subnet1                                                                           |
| network_id        | 4c2ee747-c9f8-4bbb-b1a1-5fa8752a7878                                              |
| prefix_length     | None                                                                              |
| project_id        | c5e87c9b460e4f16801b4102019c97e6                                                  |
| revision_number   | 0                                                                                 |
| segment_id        | None                                                                              |
| service_types     |                                                                                   |
| subnetpool_id     | None                                                                              |
| tags              |                                                                                   |
| updated_at        | 2019-05-15T02:16:08Z                                                              |
+-------------------+-----------------------------------------------------------------------------------+

# 設定確認

[root@dlp ~(keystone)]#
openstack network list

+--------------------------------------+------------+--------------------------------------+
| ID                                   | Name       | Subnets                              |
+--------------------------------------+------------+--------------------------------------+
| 4c2ee747-c9f8-4bbb-b1a1-5fa8752a7878 | sharednet1 | 630959d2-cdee-41e4-8501-626064ad1d0f |
+--------------------------------------+------------+--------------------------------------+

[root@dlp ~(keystone)]#
openstack subnet list

+--------------------------------------+---------+--------------------------------------+-------------+
| ID                                   | Name    | Network                              | Subnet      |
+--------------------------------------+---------+--------------------------------------+-------------+
| 630959d2-cdee-41e4-8501-626064ad1d0f | subnet1 | 4c2ee747-c9f8-4bbb-b1a1-5fa8752a7878 | 10.0.0.0/24 |
+--------------------------------------+---------+--------------------------------------+-------------+
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