OpenStack Epoxy : Neutron ネットワークを構成 (FLAT)2025/08/29 |
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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 タイプのネットワークを構成します。
また、当例では Network ノードと Compute ノードが 2 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。
------------+--------------------------+--------------------------+------------
| | |
eth0|10.0.0.30 eth0|10.0.0.50 eth0|10.0.0.51
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+
| [ dlp.srv.world ] | | [ network.srv.world ] | | [ node01.srv.world ] |
| (Control Node) | | (Network Node) | | (Compute Node) |
| | | | | |
| MariaDB RabbitMQ | | Neutron L2/L3 Agent | | Libvirt |
| Memcached Nginx | | Neutron Metadata | | Nova Compute |
| Keystone httpd | | Open vSwitch | | Neutron L2 Agent |
| Glance Nova API | | | | Open vSwitch |
| Neutron Server | | | | |
| Neutron Metadata | | | | |
+-----------------------+ +-----------+-----------+ +-----------+-----------+
eth1|(UP with no IP) eth1|(UP with no IP)
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| [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。 |
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# ブリッジ追加 root@network:~# ovs-vsctl add-br br-eth1
# 追加したブリッジのポートに [eth1] を追加 # [eth1] は環境によって異なるため自身の名称に置き換え root@network:~# ovs-vsctl add-port br-eth1 eth1
root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # 追記 [ml2_type_flat]
flat_networks = physnet1
root@network:~#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 追記 [ovs]
bridge_mappings = physnet1:br-eth1
systemctl restart neutron-openvswitch-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。 |
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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 +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2025-08-28T11:10:35Z | | description | | | dns_domain | None | | id | 830a2d94-0bee-4bd1-ae5d-de22645fcbbb | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | None | | is_vlan_qinq | None | | is_vlan_transparent | None | | mtu | 1500 | | name | sharednet1 | | port_security_enabled | True | | project_id | a60814a6c56241edbbdfae6c290f8abc | | 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 | 2025-08-28T11:10:35Z | +---------------------------+--------------------------------------+ # [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 +----------------------+--------------------------------------+ | Field | Value | +----------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2025-08-28T11:10:56Z | | description | | | dns_nameservers | 10.0.0.10 | | dns_publish_fixed_ip | None | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 4f6677f7-6f8f-4e4e-b991-c850f19763e3 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | 830a2d94-0bee-4bd1-ae5d-de22645fcbbb | | project_id | a60814a6c56241edbbdfae6c290f8abc | | revision_number | 0 | | router:external | False | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2025-08-28T11:10:56Z | +----------------------+--------------------------------------+ # 設定確認 root@dlp ~(keystone)# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | 830a2d94-0bee-4bd1-ae5d-de22645fcbbb | sharednet1 | 4f6677f7-6f8f-4e4e-b991-c850f19763e3 | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに関連付けてインスタンスを作成/起動します。 |
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# 利用可能な [flavor] 確認 debian@dlp ~(keystone)$ openstack flavor list +----+-----------+-------+------+-----------+-------+-----------+ | ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public | +----+-----------+-------+------+-----------+-------+-----------+ | 1 | m1.tiny | 2048 | 10 | 0 | 1 | True | | 2 | m1.small | 4096 | 10 | 0 | 2 | True | | 3 | m1.medium | 8192 | 10 | 0 | 4 | True | | 4 | m1.large | 16384 | 10 | 0 | 8 | True | | 5 | m2.medium | 8192 | 10 | 10 | 4 | True | +----+-----------+-------+------+-----------+-------+-----------+ # 利用可能なイメージ確認 debian@dlp ~(keystone)$ openstack image list +--------------------------------------+----------+--------+ | ID | Name | Status | +--------------------------------------+----------+--------+ | 33def798-3361-483b-9de1-8c2c6e1c840c | Debian13 | active | +--------------------------------------+----------+--------+ # 利用可能なネットワーク確認 debian@dlp ~(keystone)$ openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | 830a2d94-0bee-4bd1-ae5d-de22645fcbbb | sharednet1 | 4f6677f7-6f8f-4e4e-b991-c850f19763e3 | +--------------------------------------+------------+--------------------------------------+ # インスタンス用のセキュリティグループを作成 debian@dlp ~(keystone)$ openstack security group create secgroup01 +-----------------+--------------------------------------------------------------------------+ | Field | Value | +-----------------+--------------------------------------------------------------------------+ | created_at | 2025-08-28T11:13:19Z | | description | secgroup01 | | id | 1a8970c3-fa82-4efd-bbde-3ea6eb502fa7 | | name | secgroup01 | | project_id | ecfa98ba82de421e8f16c3d862b5ab04 | | revision_number | 1 | | rules | created_at='2025-08-28T11:13:19Z', direction='egress', ethertype='IPv4', | | | id='57fd01e0-c025-4f74-8fee-e53b4b598073', standard_attr_id='20', upd... | | | created_at='2025-08-28T11:13:19Z', direction='egress', ethertype='IPv6', | | | id='91251b69-2e4a-46c3-82a1-3d00674e5a03', standard_attr_id='21', upd... | | shared | False | | stateful | True | | tags | [] | | updated_at | 2025-08-28T11:13:19Z | +-----------------+--------------------------------------------------------------------------+ # インスタンス接続用の SSH キーペア作成 debian@dlp ~(keystone)$ ssh-keygen -q -N "" Enter file in which to save the key (/home/debian/.ssh/id_ed25519): # 公開鍵登録 debian@dlp ~(keystone)$ openstack keypair create --public-key ~/.ssh/id_ed25519.pub mykey +-------------+-------------------------------------------------+ | Field | Value | +-------------+-------------------------------------------------+ | created_at | None | | fingerprint | ff:1d:14:d7:06:8f:8b:28:8a:3e:8f:f9:c6:a8:fb:00 | | id | mykey | | is_deleted | None | | name | mykey | | type | ssh | | user_id | da64c3c335434563b66eb2e8af260392 | +-------------+-------------------------------------------------+debian@dlp ~(keystone)$ netID=$(openstack network list | grep sharednet1 | awk '{ print $2 }')
debian@dlp ~(keystone)$
debian@dlp ~(keystone)$ openstack server create --flavor m1.small --image Debian13 --security-group secgroup01 --nic net-id=$netID --key-name mykey Debian-13
openstack server list +--------------------------------------+-----------+--------+-----------------------+----------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+-----------+--------+-----------------------+----------+----------+ | 2434d33c-eb1c-4af2-aa9e-5d76c56c52d3 | Debian-13 | ACTIVE | sharednet1=10.0.0.217 | Debian13 | m1.small | +--------------------------------------+-----------+--------+-----------------------+----------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 debian@dlp ~(keystone)$ openstack security group rule create --protocol icmp --ingress secgroup01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | belongs_to_default_sg | False | | created_at | 2025-08-28T11:15:28Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 4f4f2cc6-d87e-4b56-a055-ddba33274dc6 | | name | None | | normalized_cidr | 0.0.0.0/0 | | port_range_max | None | | port_range_min | None | | project_id | ecfa98ba82de421e8f16c3d862b5ab04 | | protocol | icmp | | remote_address_group_id | None | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 1a8970c3-fa82-4efd-bbde-3ea6eb502fa7 | | tags | [] | | updated_at | 2025-08-28T11:15:28Z | +-------------------------+--------------------------------------+ # SSH 許可 debian@dlp ~(keystone)$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | belongs_to_default_sg | False | | created_at | 2025-08-28T11:15:42Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 46b88273-d146-4eae-aeb2-c6066556b874 | | name | None | | normalized_cidr | 0.0.0.0/0 | | port_range_max | 22 | | port_range_min | 22 | | project_id | ecfa98ba82de421e8f16c3d862b5ab04 | | protocol | tcp | | remote_address_group_id | None | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 1a8970c3-fa82-4efd-bbde-3ea6eb502fa7 | | tags | [] | | updated_at | 2025-08-28T11:15:42Z | +-------------------------+--------------------------------------+debian@dlp ~(keystone)$ openstack security group rule list secgroup01 +--------------------+-------------+-----------+-----------+------------+-----------+-----------------------+----------------------+ | ID | IP Protocol | Ethertype | IP Range | Port Range | Direction | Remote Security Group | Remote Address Group | +--------------------+-------------+-----------+-----------+------------+-----------+-----------------------+----------------------+ | 46b88273-d146- | tcp | IPv4 | 0.0.0.0/0 | 22:22 | ingress | None | None | | 4eae- | | | | | | | | | aeb2-c6066556b874 | | | | | | | | | 4f4f2cc6-d87e- | icmp | IPv4 | 0.0.0.0/0 | | ingress | None | None | | 4b56-a055- | | | | | | | | | ddba33274dc6 | | | | | | | | | 57fd01e0-c025- | None | IPv4 | 0.0.0.0/0 | | egress | None | None | | 4f74-8fee- | | | | | | | | | e53b4b598073 | | | | | | | | | 91251b69-2e4a- | None | IPv6 | ::/0 | | egress | None | None | | 46c3-82a1- | | | | | | | | | 3d00674e5a03 | | | | | | | | +--------------------+-------------+-----------+-----------+------------+-----------+-----------------------+----------------------+ |
| [5] | インスタンスにログインします。 |
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debian@dlp ~(keystone)$ ssh debian@10.0.0.217 The authenticity of host '10.0.0.217 (10.0.0.217)' can't be established. ED25519 key fingerprint is SHA256:B5N4wXHDukhBY7QmMuEGlanYxiqUVErZjx1tFkQzgfI. This key is not known by any other names. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '10.0.0.217' (ED25519) to the list of known hosts. Linux debian-13 6.12.41+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.41-1 (2025-08-12) x86_64 The programs included with the Debian GNU/Linux system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. debian@debian-13:~$ # ログインできた |
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