OpenStack Rocky : Neutron ネットワークを構成 (FLAT)2019/08/20 |
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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 タイプのプロバイダー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 | | Open vSwitch | | Open vSwitch |
| 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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# ブリッジを追加して、IP なしに設定したインターフェースをブリッジのポートに追加 root@network:~# ovs-vsctl add-br br-eth1 root@network:~# ovs-vsctl add-port br-eth1 eth1
root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # 155行目：変更 [ml2_type_flat] ..... ..... flat_networks = physnet1
root@network:~#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 195行目：コメント解除し変更 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 Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2019-08-20T02:43:19Z | | description | | | dns_domain | None | | id | afd6e405-5fb6-4748-85a2-f6d2875c415e | | 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 | af821885c5934a9395aeabe996751847 | | provider:network_type | flat | | provider:physical_network | physnet1 | | provider:segmentation_id | None | | qos_policy_id | None | | revision_number | 0 | | router:external | Internal | | segments | None | | shared | True | | status | ACTIVE | | subnets | | | tags | | | updated_at | 2019-08-20T02:43:19Z | +---------------------------+--------------------------------------+ # [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 Created a new subnet: +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2019-08-20T02:43:46Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | f783d148-97eb-44cb-b417-847a64473718 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | afd6e405-5fb6-4748-85a2-f6d2875c415e | | project_id | af821885c5934a9395aeabe996751847 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2019-08-20T02:43:46Z | +-------------------+--------------------------------------+ # 設定確認 root@dlp ~(keystone)# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | afd6e405-5fb6-4748-85a2-f6d2875c415e | sharednet1 | f783d148-97eb-44cb-b417-847a64473718 | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに紐付けてインスタンスを作成・起動します。 |
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# 利用可能な flavor 確認 debian@dlp ~(keystone)$ 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 debian@dlp ~(keystone)$ openstack image list +--------------------------------------+----------+--------+ | ID | Name | Status | +--------------------------------------+----------+--------+ | 2f489eea-ca80-471d-b450-31664cd284b1 | Debian10 | active | +--------------------------------------+----------+--------+ # 利用可能なネットワーク確認 debian@dlp ~(keystone)$ openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | afd6e405-5fb6-4748-85a2-f6d2875c415e | sharednet1 | f783d148-97eb-44cb-b417-847a64473718 | +--------------------------------------+------------+--------------------------------------+ # 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 | 2019-08-20T02:45:14Z | | description | secgroup01 | | id | 07c69bfc-39d3-4366-b2c1-2bb4170a81d4 | | name | secgroup01 | | project_id | 6de0ab5f5ae24824820df0ab890bd84f | | revision_number | 1 | | rules | created_at='2019-08-20T02:45:14Z', direction='egress', ethertype='IPv4', id='153be9e2-6b9f-44ea-ae1e-ec4e5b3f7295', updated_at='2019-08-20T02:45:14Z' | | | created_at='2019-08-20T02:45:14Z', direction='egress', ethertype='IPv6', id='5908aa2b-eb4e-4e78-b840-e72edebfd314', updated_at='2019-08-20T02:45:14Z' | | tags | [] | | updated_at | 2019-08-20T02:45:14Z | +-----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+ # 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_rsa): # 公開鍵登録 debian@dlp ~(keystone)$ openstack keypair create --public-key ~/.ssh/id_rsa.pub mykey +-------------+-------------------------------------------------+ | Field | Value | +-------------+-------------------------------------------------+ | fingerprint | 03:aa:a1:74:b6:55:21:ac:76:f8:0e:07:de:fa:1c:b6 | | name | mykey | | user_id | 2af053ff367b47fc9e1a9139c29340b6 | +-------------+-------------------------------------------------+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 Debian10 --security-group secgroup01 --nic net-id=$netID --key-name mykey Debian_10
openstack server list +--------------------------------------+-----------+--------+-----------------------+----------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+-----------+--------+-----------------------+----------+----------+ | ec9dbe78-eac5-4c57-b08c-ea031eaab1bf | Debian_10 | ACTIVE | sharednet1=10.0.0.206 | Debian10 | m1.small | +--------------------------------------+-----------+--------+-----------------------+----------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 debian@dlp ~(keystone)$ openstack security group rule create --protocol icmp --ingress secgroup01 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2019-08-20T02:54:01Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 03a5d08d-8b01-43e4-9849-53c7b5458f22 | | name | None | | port_range_max | None | | port_range_min | None | | project_id | 6de0ab5f5ae24824820df0ab890bd84f | | protocol | icmp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 07c69bfc-39d3-4366-b2c1-2bb4170a81d4 | | updated_at | 2019-08-20T02:54:01Z | +-------------------+--------------------------------------+ # SSH 許可 debian@dlp ~(keystone)$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2019-08-20T02:54:18Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 7b2d80f2-4b89-4160-bd4a-116727094792 | | name | None | | port_range_max | 22 | | port_range_min | 22 | | project_id | 6de0ab5f5ae24824820df0ab890bd84f | | protocol | tcp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 07c69bfc-39d3-4366-b2c1-2bb4170a81d4 | | updated_at | 2019-08-20T02:54:18Z | +-------------------+--------------------------------------+debian@dlp ~(keystone)$ openstack security group rule list +--------------------------------------+-------------+-----------+------------+--------------------------------------+--------------------------------------+ | ID | IP Protocol | IP Range | Port Range | Remote Security Group | Security Group | +--------------------------------------+-------------+-----------+------------+--------------------------------------+--------------------------------------+ | 03a5d08d-8b01-43e4-9849-53c7b5458f22 | icmp | 0.0.0.0/0 | | None | 07c69bfc-39d3-4366-b2c1-2bb4170a81d4 | | 077d6310-32e8-4643-8aa0-35c57aee99c9 | None | None | | 821283f5-8f6d-4932-8af6-7937f8092e49 | 821283f5-8f6d-4932-8af6-7937f8092e49 | | 153be9e2-6b9f-44ea-ae1e-ec4e5b3f7295 | None | None | | None | 07c69bfc-39d3-4366-b2c1-2bb4170a81d4 | | 4d753844-28ef-4ce6-a385-cfc251b4b83f | None | None | | None | 821283f5-8f6d-4932-8af6-7937f8092e49 | | 5908aa2b-eb4e-4e78-b840-e72edebfd314 | None | None | | None | 07c69bfc-39d3-4366-b2c1-2bb4170a81d4 | | 64ca109b-c439-4991-9a78-07a30718d80f | None | None | | 821283f5-8f6d-4932-8af6-7937f8092e49 | 821283f5-8f6d-4932-8af6-7937f8092e49 | | 7b2d80f2-4b89-4160-bd4a-116727094792 | tcp | 0.0.0.0/0 | 22:22 | None | 07c69bfc-39d3-4366-b2c1-2bb4170a81d4 | | e0512e63-613c-4b93-889c-a38d0af108f6 | None | None | | None | 821283f5-8f6d-4932-8af6-7937f8092e49 | +--------------------------------------+-------------+-----------+------------+--------------------------------------+--------------------------------------+ |
| [5] | インスタンスにログインします。 |
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debian@dlp ~(keystone)$ ssh debian@10.0.0.206 The authenticity of host '10.0.0.206 (10.0.0.206)' can't be established. ECDSA key fingerprint is SHA256:ZuXM7tU3Pp0+OJzLEIjxeXCFEj92Zt4bi6FY3ASOKL0. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '10.0.0.206' (ECDSA) to the list of known hosts. Linux debian-10 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5+deb10u2 (2019-08-08) 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-10:~$ # ログインできた |
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