OpenStack Victoria : Neutron ネットワークを構成 (FLAT)2020/06/05 |
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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。
事前に以下のように Control ノード、 Network ノード、 Compute ノードの 各 Neutron サービスノードを構築済みであることが前提です。
また、当例では Network ノードと Compute ノードが二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。
また、下例で eth1 の方は IP なしでインターフェースを UP しています。 IP なしでのインターフェース UP の設定はこちらの [1] を参照ください。
------------+---------------------------+---------------------------+------------
| | |
eth0|10.0.0.30 eth0|10.0.0.50 eth0|10.0.0.51
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+
| [ Control Node ] | | [ Network Node ] | | [ Compute Node ] |
| | | | | |
| MariaDB RabbitMQ | | L2 Agent | | Libvirt |
| Memcached httpd | | L3 Agent | | Nova Compute |
| Keystone Glance | | Metadata Agent | | L2 Agent |
| Nova API | | | | |
| Neutron Server | | | | |
| Metadata Agent | | | | |
+-----------------------+ +-----------+-----------+ +-----------+-----------+
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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root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # 206行目：追記 [ml2_type_flat]
flat_networks = physnet1
root@network:~#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini # 190行目：追記 [linux_bridge]
physical_interface_mappings = physnet1:eth1
# 257行目：コメント解除して変更 enable_vxlan = false
systemctl restart neutron-linuxbridge-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 Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2020-10-19T06:41:04Z | | description | | | dns_domain | None | | id | c38ff4a5-bcfe-4cbc-b6d8-5f83b33ef3f0 | | 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 | 37197271a1954ddb90207a95d5f46488 | | 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 | 2020-10-19T06:41:04Z | +---------------------------+--------------------------------------+ # [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 Created a new subnet: +----------------------+--------------------------------------+ | Field | Value | +----------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2020-10-19T06:41:26Z | | description | | | dns_nameservers | 10.0.0.10 | | dns_publish_fixed_ip | None | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 38648a8a-5e4b-4e2c-9017-5f52a09de929 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | c38ff4a5-bcfe-4cbc-b6d8-5f83b33ef3f0 | | prefix_length | None | | project_id | 37197271a1954ddb90207a95d5f46488 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2020-10-19T06:41:26Z | +----------------------+--------------------------------------+ # 設定確認 root@dlp ~(keystone)# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | c38ff4a5-bcfe-4cbc-b6d8-5f83b33ef3f0 | sharednet1 | 38648a8a-5e4b-4e2c-9017-5f52a09de929 | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに紐付けてインスタンスを作成/起動します。 |
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# 利用可能な [flavor] 確認 ubuntu@dlp ~(keystone)$ openstack flavor list +----+----------+------+------+-----------+-------+-----------+ | ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public | +----+----------+------+------+-----------+-------+-----------+ | 0 | m1.small | 2048 | 10 | 0 | 1 | True | +----+----------+------+------+-----------+-------+-----------+ # 利用可能なイメージ確認 ubuntu@dlp ~(keystone)$ openstack image list +--------------------------------------+------------+--------+ | ID | Name | Status | +--------------------------------------+------------+--------+ | 7ba71e53-e270-4d2a-bbe9-0d642a6c019c | Ubuntu2004 | active | +--------------------------------------+------------+--------+ # 利用可能なネットワーク確認 ubuntu@dlp ~(keystone)$ openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | c38ff4a5-bcfe-4cbc-b6d8-5f83b33ef3f0 | sharednet1 | 38648a8a-5e4b-4e2c-9017-5f52a09de929 | +--------------------------------------+------------+--------------------------------------+ # 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 | 2020-10-19T06:43:37Z | | description | secgroup01 | | id | 69829a3a-85e2-4a68-9141-4b3ef4c40665 | | name | secgroup01 | | project_id | 6c44eafd4f614985bf74b94f2aee82fb | | revision_number | 1 | | rules | created_at='2020-10-19T06:43:37Z', direction='egress', ethertype='IPv6.. | | | created_at='2020-10-19T06:43:37Z', direction='egress', ethertype='IPv4.. | | stateful | True | | tags | [] | | updated_at | 2020-10-19T06:43:37Z | +-----------------+--------------------------------------------------------------------------+ # 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_rsa): # 公開鍵登録 ubuntu@dlp ~(keystone)$ openstack keypair create --public-key ~/.ssh/id_rsa.pub mykey +-------------+-------------------------------------------------+ | Field | Value | +-------------+-------------------------------------------------+ | fingerprint | d4:f7:0a:ca:50:55:28:70:95:a9:7a:41:98:21:a6:b8 | | name | mykey | | user_id | a13cfae0e5eb466fae71a636a6ffb6b4 | +-------------+-------------------------------------------------+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 Ubuntu2004 --security-group secgroup01 --nic net-id=$netID --key-name mykey Ubuntu_2004
openstack server list +--------------------------------------+-------------+--------+-----------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+-------------+--------+-----------------------+------------+----------+ | 236955c6-ebb2-4dd9-b1bb-bed5e6767ddf | Ubuntu_2004 | ACTIVE | sharednet1=10.0.0.254 | Ubuntu2004 | m1.small | +--------------------------------------+-------------+--------+-----------------------+------------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol icmp --ingress secgroup01 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2020-10-19T06:47:54Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | cedac216-6e0e-442f-843b-36864a8150f0 | | name | None | | port_range_max | None | | port_range_min | None | | project_id | 6c44eafd4f614985bf74b94f2aee82fb | | protocol | icmp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 69829a3a-85e2-4a68-9141-4b3ef4c40665 | | tags | [] | | updated_at | 2020-10-19T06:47:54Z | +-------------------+--------------------------------------+ # SSH 許可 ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2020-10-19T06:48:11Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | a7951bdd-ee7a-449b-8127-9729e99fd02f | | name | None | | port_range_max | 22 | | port_range_min | 22 | | project_id | 6c44eafd4f614985bf74b94f2aee82fb | | protocol | tcp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 69829a3a-85e2-4a68-9141-4b3ef4c40665 | | tags | [] | | updated_at | 2020-10-19T06:48:11Z | +-------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack security group rule list +--------------------------------------+-------------+-----------+-----------+------------+--------------------------------------+--------------------------------------+ | ID | IP Protocol | Ethertype | IP Range | Port Range | Remote Security Group | Security Group | +--------------------------------------+-------------+-----------+-----------+------------+--------------------------------------+--------------------------------------+ | 111f5db4-3306-4bcd-8199-cda500faeca5 | None | IPv4 | 0.0.0.0/0 | | 751cc4fc-956c-4a91-85bf-3d00cf067107 | 751cc4fc-956c-4a91-85bf-3d00cf067107 | | 52b3ecc0-eb11-4551-94ec-6a7c29ef334a | None | IPv6 | ::/0 | | None | 751cc4fc-956c-4a91-85bf-3d00cf067107 | | a4e20c67-0c63-499f-959c-ea62112d2fc3 | None | IPv4 | 0.0.0.0/0 | | None | 751cc4fc-956c-4a91-85bf-3d00cf067107 | | a7951bdd-ee7a-449b-8127-9729e99fd02f | tcp | IPv4 | 0.0.0.0/0 | 22:22 | None | 69829a3a-85e2-4a68-9141-4b3ef4c40665 | | c883f81c-a6c3-4eec-8985-7e95b292e126 | None | IPv6 | ::/0 | | None | 69829a3a-85e2-4a68-9141-4b3ef4c40665 | | cedac216-6e0e-442f-843b-36864a8150f0 | icmp | IPv4 | 0.0.0.0/0 | | None | 69829a3a-85e2-4a68-9141-4b3ef4c40665 | | dce61042-ba3d-43bc-905f-df7ac9bd0dc3 | None | IPv6 | ::/0 | | 751cc4fc-956c-4a91-85bf-3d00cf067107 | 751cc4fc-956c-4a91-85bf-3d00cf067107 | | ee38ce08-2dff-4f32-bb45-52e224781bf8 | None | IPv4 | 0.0.0.0/0 | | None | 69829a3a-85e2-4a68-9141-4b3ef4c40665 | +--------------------------------------+-------------+-----------+-----------+------------+--------------------------------------+--------------------------------------+ |
| [5] | インスタンスにログインします。 |
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ubuntu@dlp ~(keystone)$ ssh ubuntu@10.0.0.254 The authenticity of host '10.0.0.254 (10.0.0.254)' can't be established. ECDSA key fingerprint is SHA256:MgXRE3aRLuhobQVjVfwc/Su94X2NmQU93e86CZX1spQ. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '10.0.0.254' (ECDSA) to the list of known hosts. Welcome to Ubuntu 20.04.1 LTS (GNU/Linux 5.4.0-51-generic x86_64) * Documentation: https://help.ubuntu.com * Management: https://landscape.canonical.com * Support: https://ubuntu.com/advantage Last login: Mon Oct 19 19:14:01 2020 ubuntu@ubuntu-2004:~$ # ログインできた |
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