OpenStack Queens : Neutron ネットワークを構成する (FLAT)2018/03/13 |
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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。
------------+---------------------------+---------------------------+------------
| | |
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 |eth1
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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 # 181行目：追記 [ml2_type_flat]
flat_networks = physnet1
root@network:~#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini # 147行目：追記 [linux_bridge]
physical_interface_mappings = physnet1:eth1
# 208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 | 2018-03-15T06:50:05Z | | description | | | dns_domain | None | | id | 583148af-e031-4c0d-887b-978ee63150da | | 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 | ffc35f92a94a4df8b512f342421ed01e | | provider:network_type | flat | | provider:physical_network | physnet1 | | provider:segmentation_id | None | | qos_policy_id | None | | revision_number | 2 | | router:external | Internal | | segments | None | | shared | True | | status | ACTIVE | | subnets | | | tags | | | updated_at | 2018-03-15T06:50:06Z | +---------------------------+--------------------------------------+ # [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 Created a new subnet: +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2018-03-15T06:50:28Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 40940b21-5b58-4ca4-abee-1f8f992a514b | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | 583148af-e031-4c0d-887b-978ee63150da | | project_id | ffc35f92a94a4df8b512f342421ed01e | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2018-03-15T06:50:28Z | +-------------------+--------------------------------------+ # 設定確認 root@dlp ~(keystone)# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | 583148af-e031-4c0d-887b-978ee63150da | sharednet1 | 40940b21-5b58-4ca4-abee-1f8f992a514b | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに紐付けてインスタンスを作成・起動します。 |
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# 利用可能な flavor 確認 ubuntu@dlp ~(keystone)$ 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 | +--------------------------------------+------------+--------+ | 217a694d-e526-4921-a018-6b1e6874ef44 | Ubuntu1604 | active | +--------------------------------------+------------+--------+ # 利用可能なネットワーク確認 ubuntu@dlp ~(keystone)$ openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | 583148af-e031-4c0d-887b-978ee63150da | sharednet1 | 40940b21-5b58-4ca4-abee-1f8f992a514b | +--------------------------------------+------------+--------------------------------------+ # 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 | 2018-03-15T06:55:02Z | | description | secgroup01 | | id | 395dced0-e033-46d0-9ddd-ef78d196c2b1 | | name | secgroup01 | | project_id | 142ba5a5d91c4148a4caa9227e05b504 | | revision_number | 2 | | rules | created_at='2018-03-15T06:55:03Z', direction='egress', ethertype='IPv4', id='...' | | | created_at='2018-03-15T06:55:03Z', direction='egress', ethertype='IPv6', id='...' | | updated_at | 2018-03-15T06:55:03Z | +-----------------+-----------------------------------------------------------------------------------+ # 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 | ec:94:28:27:00:1e:90:09:24:b5:e5:23:79:26:ed:82 | | name | mykey | | user_id | b7b1b4b96b714e458690dd893fbbe5f5 | +-------------+-------------------------------------------------+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 Ubuntu1604 --security-group secgroup01 --nic net-id=$netID --key-name mykey Ubuntu_1604
openstack server list +--------------------------------------+-------------+--------+-----------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+-------------+--------+-----------------------+------------+----------+ | f2bc94ef-2b54-40aa-b940-dfc977b31717 | Ubuntu_1604 | ACTIVE | sharednet1=10.0.0.208 | Ubuntu1604 | m1.small | +--------------------------------------+-------------+--------+-----------------------+------------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol icmp --ingress default +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2018-03-15T07:10:38Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | ab347ca5-733c-4b8b-8517-c7b877e88c05 | | name | None | | port_range_max | None | | port_range_min | None | | project_id | 142ba5a5d91c4148a4caa9227e05b504 | | protocol | icmp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 933b3c77-0b90-4914-8c96-2d33c7e986f5 | | updated_at | 2018-03-15T07:10:38Z | +-------------------+--------------------------------------+ # SSH 許可 ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol tcp --dst-port 22:22 default +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2018-03-15T07:10:44Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | bf75faa3-0d56-46e1-8697-01c738e3cf11 | | name | None | | port_range_max | 22 | | port_range_min | 22 | | project_id | 142ba5a5d91c4148a4caa9227e05b504 | | protocol | tcp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 933b3c77-0b90-4914-8c96-2d33c7e986f5 | | updated_at | 2018-03-15T07:10:44Z | +-------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack security group rule list +--------------+-------------+-----------+------------+-----------------------------+-------------------+ | ID | IP Protocol | IP Range | Port Range | Remote Security Group | Security Group | +--------------+-------------+-----------+------------+-----------------------------+-------------------+ | 2374f9c6-... | None | None | | None | 395dced0-e033-... | | 3e90d0fb-... | None | None | | 933b3c77-0b90-4914-8c96-... | 933b3c77-0b90-... | | 520d7b7d-... | None | None | | None | 933b3c77-0b90-... | | 72c7ef17-... | None | None | | None | 933b3c77-0b90-... | | 9225abd6-... | None | None | | 933b3c77-0b90-4914-8c96-... | 933b3c77-0b90-... | | ab347ca5-... | icmp | 0.0.0.0/0 | | None | 933b3c77-0b90-... | | bf75faa3-... | tcp | 0.0.0.0/0 | 22:22 | None | 933b3c77-0b90-... | | fc204462-... | None | None | | None | 395dced0-e033-... | +--------------+-------------+-----------+------------+-----------------------------+-------------------+ |
| [5] | インスタンスにログインします。 |
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ubuntu@dlp ~(keystone)$ ssh ubuntu@10.0.0.208
The authenticity of host '10.0.0.208 (10.0.0.208)' can't be established.
ECDSA key fingerprint is SHA256:HPkZg/5hmNPaaRaVrcq8Fgm4JS/Ups1JGuuLf3g1K7Q.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.0.0.208' (ECDSA) to the list of known hosts.
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