OpenStack Epoxy : Neutron ネットワークを構成 (FLAT)2025/04/23 |
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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。
------------+--------------------------+--------------------------+------------
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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 # 227行目 : 追記 [ml2_type_flat]
flat_networks = physnet1
root@network:~#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 333行目 : 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 | 2025-04-23T04:41:07Z | | description | | | dns_domain | None | | id | c4d21264-7e3c-4ac1-8ad7-67def6841418 | | 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 | e5fb0e2eb880471a9101084118997e43 | | 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 | 2025-04-23T04:41:07Z | +---------------------------+--------------------------------------+ # [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 +----------------------+--------------------------------------+ | Field | Value | +----------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2025-04-23T04:41:30Z | | description | | | dns_nameservers | 10.0.0.10 | | dns_publish_fixed_ip | None | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | f13c193b-4c28-41f8-9269-85a2e1749d94 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | c4d21264-7e3c-4ac1-8ad7-67def6841418 | | project_id | e5fb0e2eb880471a9101084118997e43 | | revision_number | 0 | | router:external | False | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2025-04-23T04:41:30Z | +----------------------+--------------------------------------+ # 設定確認 root@dlp ~(keystone)# openstack network list +--------------------------------+------------+--------------------------------+ | ID | Name | Subnets | +--------------------------------+------------+--------------------------------+ | c4d21264-7e3c-4ac1-8ad7- | sharednet1 | f13c193b-4c28-41f8-9269- | | 67def6841418 | | 85a2e1749d94 | +--------------------------------+------------+--------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに関連付けてインスタンスを作成/起動します。 |
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# 利用可能な [flavor] 確認 ubuntu@dlp ~(keystone)$ 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 ubuntu@dlp ~(keystone)$ openstack image list +--------------------------------------+------------+--------+ | ID | Name | Status | +--------------------------------------+------------+--------+ | f1c2157b-e54b-42c2-a09d-885d21b7aa72 | Ubuntu2404 | active | +--------------------------------------+------------+--------+ # 利用可能なネットワーク確認 ubuntu@dlp ~(keystone)$ openstack network list +--------------------------------+------------+--------------------------------+ | ID | Name | Subnets | +--------------------------------+------------+--------------------------------+ | c4d21264-7e3c-4ac1-8ad7- | sharednet1 | f13c193b-4c28-41f8-9269- | | 67def6841418 | | 85a2e1749d94 | +--------------------------------+------------+--------------------------------+ # インスタンス用のセキュリティグループを作成 ubuntu@dlp ~(keystone)$ openstack security group create secgroup01 +-----------------+------------------------------------------------------------+ | Field | Value | +-----------------+------------------------------------------------------------+ | created_at | 2025-04-23T04:43:04Z | | description | secgroup01 | | id | 8393a54a-150e-4ff5-bbcc-b47d05a8cd22 | | name | secgroup01 | | project_id | 407400ec8d16434e9badf4ceb9d71f1e | | revision_number | 1 | | rules | created_at='2025-04-23T04:43:04Z', direction='egress', | | | ethertype='IPv6', | | | id='0373f003-cfeb-4199-8c69-047783302f86', | | | standard_attr_id='20', updated_at='2025-04-23T04:43:04Z' | | | created_at='2025-04-23T04:43:04Z', direction='egress', | | | ethertype='IPv4', | | | id='1de7a201-ac8d-4021-be25-139335dbe823', | | | standard_attr_id='21', updated_at='2025-04-23T04:43:04Z' | | shared | False | | stateful | True | | tags | [] | | updated_at | 2025-04-23T04:43:04Z | +-----------------+------------------------------------------------------------+ # インスタンス接続用の SSH キーペア作成 ubuntu@dlp ~(keystone)$ ssh-keygen -q -N "" Enter file in which to save the key (/home/ubuntu/.ssh/id_ed25519): # 公開鍵登録 ubuntu@dlp ~(keystone)$ openstack keypair create --public-key ~/.ssh/id_ed25519.pub mykey +-------------+-------------------------------------------------+ | Field | Value | +-------------+-------------------------------------------------+ | created_at | None | | fingerprint | d1:c4:b8:5a:d3:1d:b9:d5:e3:2e:39:6b:c2:35:be:c2 | | id | mykey | | is_deleted | None | | name | mykey | | type | ssh | | user_id | a30763bf79b944f59efcfd59d4899e5b | +-------------+-------------------------------------------------+ubuntu@dlp ~(keystone)$ netID=$(openstack network list | grep sharednet1 | awk '{ print $2 }')
ubuntu@dlp ~(keystone)$
ubuntu@dlp ~(keystone)$ openstack server create --flavor m1.small --image Ubuntu2404 --security-group secgroup01 --nic net-id=$netID --key-name mykey Ubuntu-2404
openstack server list +--------------+-------------+--------+---------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------+-------------+--------+---------------+------------+----------+ | 4bf7cfe8- | Ubuntu-2404 | ACTIVE | sharednet1=10 | Ubuntu2404 | m1.small | | 02b8-4258- | | | .0.0.217 | | | | a4cb- | | | | | | | cfc13e0cc4d7 | | | | | | +--------------+-------------+--------+---------------+------------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol icmp --ingress secgroup01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | belongs_to_default_sg | False | | created_at | 2025-04-23T04:45:08Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 1d79b2c1-4415-4694-a61d-2752a3de8c3b | | name | None | | normalized_cidr | 0.0.0.0/0 | | port_range_max | None | | port_range_min | None | | project_id | 407400ec8d16434e9badf4ceb9d71f1e | | 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 | 8393a54a-150e-4ff5-bbcc-b47d05a8cd22 | | tags | [] | | updated_at | 2025-04-23T04:45:08Z | +-------------------------+--------------------------------------+ # SSH 許可 ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | belongs_to_default_sg | False | | created_at | 2025-04-23T04:45:24Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | c9205fd9-59da-4ee9-b66a-def9ac4ffca0 | | name | None | | normalized_cidr | 0.0.0.0/0 | | port_range_max | 22 | | port_range_min | 22 | | project_id | 407400ec8d16434e9badf4ceb9d71f1e | | 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 | 8393a54a-150e-4ff5-bbcc-b47d05a8cd22 | | tags | [] | | updated_at | 2025-04-23T04:45:24Z | +-------------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack security group rule list secgroup01 +----------+-------------+-----------+----------+------------+-----------+-----------------------+----------------------+ | ID | IP Protocol | Ethertype | IP Range | Port Range | Direction | Remote Security Group | Remote Address Group | +----------+-------------+-----------+----------+------------+-----------+-----------------------+----------------------+ | 0373f003 | None | IPv6 | ::/0 | | egress | None | None | | -cfeb- | | | | | | | | | 4199- | | | | | | | | | 8c69- | | | | | | | | | 04778330 | | | | | | | | | 2f86 | | | | | | | | | 1d79b2c1 | icmp | IPv4 | 0.0.0.0/ | | ingress | None | None | | -4415- | | | 0 | | | | | | 4694- | | | | | | | | | a61d- | | | | | | | | | 2752a3de | | | | | | | | | 8c3b | | | | | | | | | 1de7a201 | None | IPv4 | 0.0.0.0/ | | egress | None | None | | -ac8d- | | | 0 | | | | | | 4021- | | | | | | | | | be25- | | | | | | | | | 139335db | | | | | | | | | e823 | | | | | | | | | c9205fd9 | tcp | IPv4 | 0.0.0.0/ | 22:22 | ingress | None | None | | -59da- | | | 0 | | | | | | 4ee9- | | | | | | | | | b66a- | | | | | | | | | def9ac4f | | | | | | | | | fca0 | | | | | | | | +----------+-------------+-----------+----------+------------+-----------+-----------------------+----------------------+ |
| [5] | インスタンスにログインします。 |
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ubuntu@dlp ~(keystone)$ ssh ubuntu@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:t3+ofSfi5bbLYqN1msMiqcsaM4K7qEKNYy7H+jKH8J4. 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. Welcome to Ubuntu 24.04.2 LTS (GNU/Linux 6.8.0-57-generic x86_64) ..... ..... To run a command as administrator (user "root"), use "sudo <command>". See "man sudo_root" for details. ubuntu@ubuntu-2404:~$ # ログインできた |
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