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OpenStack Pike : ネットワークを構成する
2017/09/03
 
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     |eth1
          |  Keystone   Glance    +------
          |   Nova API,Compute    |
          |    Neutron Server     |
          |  L2,L3,Metadata Agent |
          +-----------------------+

[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
# 166行目:追記

[ml2_type_flat]
flat_networks = physnet1
[root@dlp ~(keystone)]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini
# 180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                | 2017-09-04T06:39:09Z                 |
| description               |                                      |
| dns_domain                | None                                 |
| id                        | fdb1468f-b479-4cbc-b82e-582719536cbc |
| 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                | c9ab6e9feb4d444c8f637fcfe7a67305     |
| provider:network_type     | flat                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | None                                 |
| qos_policy_id             | None                                 |
| revision_number           | 2                                    |
| router:external           | Internal                             |
| segments                  | None                                 |
| shared                    | True                                 |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tags                      |                                      |
| updated_at                | 2017-09-04T06:39:09Z                 |
+---------------------------+--------------------------------------+

# 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              | 2017-09-04T06:39:33Z                 |
| description             |                                      |
| dns_nameservers         | 10.0.0.10                            |
| enable_dhcp             | True                                 |
| gateway_ip              | 10.0.0.1                             |
| host_routes             |                                      |
| id                      | bd84f1db-6f15-4994-9f1c-54bbe9c79152 |
| ip_version              | 4                                    |
| ipv6_address_mode       | None                                 |
| ipv6_ra_mode            | None                                 |
| name                    | subnet1                              |
| network_id              | fdb1468f-b479-4cbc-b82e-582719536cbc |
| project_id              | c9ab6e9feb4d444c8f637fcfe7a67305     |
| revision_number         | 0                                    |
| segment_id              | None                                 |
| service_types           |                                      |
| subnetpool_id           | None                                 |
| tags                    |                                      |
| updated_at              | 2017-09-04T06:39:33Z                 |
| use_default_subnet_pool | None                                 |
+-------------------------+--------------------------------------+

# 設定確認

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

+--------------------------------------+------------+--------------------------------------+
| ID                                   | Name       | Subnets                              |
+--------------------------------------+------------+--------------------------------------+
| fdb1468f-b479-4cbc-b82e-582719536cbc | sharednet1 | bd84f1db-6f15-4994-9f1c-54bbe9c79152 |
+--------------------------------------+------------+--------------------------------------+

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

+--------------------------------------+---------+--------------------------------------+-------------+
| ID                                   | Name    | Network                              | Subnet      |
+--------------------------------------+---------+--------------------------------------+-------------+
| bd84f1db-6f15-4994-9f1c-54bbe9c79152 | subnet1 | fdb1468f-b479-4cbc-b82e-582719536cbc | 10.0.0.0/24 |
+--------------------------------------+---------+--------------------------------------+-------------+
 
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