OpenStack Wallaby : Neutron ネットワークを構成 (FLAT)2021/04/18 |
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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 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。
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 +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2021-04-15T07:33:14Z | | description | | | dns_domain | None | | id | e7a048a3-a03b-407a-b8e2-3edc8d2b8017 | | 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 | b1f2e1bdf6fb4e03bb30ef3b90764d3b | | 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 | 2021-04-15T07:33:14Z | +---------------------------+--------------------------------------+ # [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 +----------------------+--------------------------------------+ | Field | Value | +----------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2021-04-15T07:33:35Z | | description | | | dns_nameservers | 10.0.0.10 | | dns_publish_fixed_ip | None | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | bbf5283b-e0ae-4308-9896-a3d1e45a2413 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | e7a048a3-a03b-407a-b8e2-3edc8d2b8017 | | prefix_length | None | | project_id | b1f2e1bdf6fb4e03bb30ef3b90764d3b | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2021-04-15T07:33:35Z | +----------------------+--------------------------------------+ # 設定確認 root@dlp ~(keystone)# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | e7a048a3-a03b-407a-b8e2-3edc8d2b8017 | sharednet1 | bbf5283b-e0ae-4308-9896-a3d1e45a2413 | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに関連付けてインスタンスを作成/起動します。 |
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# 利用可能な [flavor] 確認 ubuntu@dlp ~(keystone)$ openstack flavor list +----+----------+------+------+-----------+-------+-----------+ | ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public | +----+----------+------+------+-----------+-------+-----------+ | 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 | +--------------------------------------+------------+--------+ | 8df08a02-7c19-465e-8862-53eb2319918d | Ubuntu2004 | active | +--------------------------------------+------------+--------+ # 利用可能なネットワーク確認 ubuntu@dlp ~(keystone)$ openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | e7a048a3-a03b-407a-b8e2-3edc8d2b8017 | sharednet1 | bbf5283b-e0ae-4308-9896-a3d1e45a2413 | +--------------------------------------+------------+--------------------------------------+ # 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 | 2021-04-15T07:36:16Z | | description | secgroup01 | | id | 09c7cc13-cb05-45db-ad64-e28d87cb0f91 | | name | secgroup01 | | project_id | e256a7323fda468fb02e8f1975fce488 | | revision_number | 1 | | rules | created_at='2021-04-15T07:36:16Z', direction='egress', ethertype='IPv4.. | | | created_at='2021-04-15T07:36:16Z', direction='egress', ethertype='IPv6.. | | stateful | True | | tags | [] | | updated_at | 2021-04-15T07:36:16Z | +-----------------+--------------------------------------------------------------------------+ # 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 | +-------------+-------------------------------------------------+ | created_at | None | | fingerprint | 58:46:ea:a5:fa:ce:c0:43:ae:ff:b1:1d:65:ce:4c:fc | | id | mykey | | is_deleted | None | | name | mykey | | type | ssh | | user_id | 3ebb8ec1b4fc467da96379caef902df7 | +-------------+-------------------------------------------------+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=$netID --key-name mykey Ubuntu-2004
openstack server list +--------------------------------------+-------------+--------+-----------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+-------------+--------+-----------------------+------------+----------+ | b06bcd4d-8cf1-42ea-b8f4-4f60d9729ece | Ubuntu-2004 | ACTIVE | sharednet1=10.0.0.237 | Ubuntu2004 | m1.small | +--------------------------------------+-------------+--------+-----------------------+------------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol icmp --ingress secgroup01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | created_at | 2021-04-15T07:41:47Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | a0b28ea4-8056-417a-95d1-f87962ffe3b2 | | name | None | | port_range_max | None | | port_range_min | None | | project_id | e256a7323fda468fb02e8f1975fce488 | | 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 | 09c7cc13-cb05-45db-ad64-e28d87cb0f91 | | tags | [] | | updated_at | 2021-04-15T07:41:47Z | +-------------------------+--------------------------------------+ # SSH 許可 ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | created_at | 2021-04-15T07:42:00Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | eb98407a-0b57-43cc-b37d-9964bd362d6f | | name | None | | port_range_max | 22 | | port_range_min | 22 | | project_id | e256a7323fda468fb02e8f1975fce488 | | 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 | 09c7cc13-cb05-45db-ad64-e28d87cb0f91 | | tags | [] | | updated_at | 2021-04-15T07:42:00Z | +-------------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack security group rule list secgroup01 +--------------------------------------+-------------+-----------+-----------+------------+-----------+-----------------------+----------------------+ | ID | IP Protocol | Ethertype | IP Range | Port Range | Direction | Remote Security Group | Remote Address Group | +--------------------------------------+-------------+-----------+-----------+------------+-----------+-----------------------+----------------------+ | 6661176f-293d-420e-847b-3b98e4a40796 | None | IPv6 | ::/0 | | egress | None | None | | a0b28ea4-8056-417a-95d1-f87962ffe3b2 | icmp | IPv4 | 0.0.0.0/0 | | ingress | None | None | | d3bcc17b-1b90-43fc-a5b0-c2a0f738016a | None | IPv4 | 0.0.0.0/0 | | egress | None | None | | eb98407a-0b57-43cc-b37d-9964bd362d6f | tcp | IPv4 | 0.0.0.0/0 | 22:22 | ingress | None | None | +--------------------------------------+-------------+-----------+-----------+------------+-----------+-----------------------+----------------------+ |
| [5] | インスタンスにログインします。 |
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ubuntu@dlp ~(keystone)$ ssh ubuntu@10.0.0.237 The authenticity of host '10.0.0.237 (10.0.0.237)' can't be established. ECDSA key fingerprint is SHA256:4oXoVAlEm21TG4vDS7O+cYhE3OW4nDY8ImwG97SCJjo. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '10.0.0.237' (ECDSA) to the list of known hosts. Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-71-generic x86_64) ..... ..... To run a command as administrator (user "root"), use "sudo <command>". See "man sudo_root" for details. ubuntu@ubuntu-2004:~$ # ログインできた |
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