OpenStack Train : Neutron ネットワークを構成する (FLAT)2019/10/25 |
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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 | | Open vSwitch | | Libvirt |
| Memcached httpd | | L2 Agent | | Nova Compute |
| Keystone Glance | | L3 Agent | | Open vSwitch |
| Nova API | | Metadata Agent | | L2 Agent |
| 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 [root@network ~]# ovs-vsctl add-port br-eth1 eth1
[root@network ~]#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # 最終行に追記
[ml2_type_flat]
flat_networks = physnet1
[root@network ~]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 最終行に追記
[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 Created a new network: +---------------------------+---------------------------------------------------------------------+ | Field | Value | +---------------------------+---------------------------------------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2019-10-25T06:46:54Z | | description | | | dns_domain | None | | id | 42b7b05f-a9c8-4231-aed7-aeeb73f13648 | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | False | | is_vlan_transparent | None | | location | cloud='', project.domain_id=, project.domain_name=, project.id='2...| | mtu | 1500 | | name | sharednet1 | | port_security_enabled | True | | project_id | 2b9c4eda462e40a4a3d03b0a38f12bf1 | | 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 | 2019-10-25T06:46:54Z | +---------------------------+---------------------------------------------------------------------+ # [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 Created a new subnet: +-------------------+-----------------------------------------------------------------------------+ | Field | Value | +-------------------+-----------------------------------------------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2019-10-25T06:47:31Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 2ec3f6fc-233a-4e5d-9628-a8764366ea57 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | location | cloud='', project.domain_id=, project.domain_name=, project.id='2b9c4eda4...| | name | subnet1 | | network_id | 42b7b05f-a9c8-4231-aed7-aeeb73f13648 | | prefix_length | None | | project_id | 2b9c4eda462e40a4a3d03b0a38f12bf1 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2019-10-25T06:47:31Z | +-------------------+-----------------------------------------------------------------------------+ # 設定確認 [root@dlp ~(keystone)]# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | 42b7b05f-a9c8-4231-aed7-aeeb73f13648 | sharednet1 | 2ec3f6fc-233a-4e5d-9628-a8764366ea57 | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに紐付けてインスタンスを作成・起動します。 |
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# 利用可能な flavor 確認 [cent@dlp ~(keystone)]$ 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 [cent@dlp ~(keystone)]$ openstack image list +--------------------------------------+---------+--------+ | ID | Name | Status | +--------------------------------------+---------+--------+ | c742c8ed-9d0f-4555-9844-7f063a0b585f | CentOS7 | active | +--------------------------------------+---------+--------+ # 利用可能なネットワーク確認 [cent@dlp ~(keystone)]$ openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | 42b7b05f-a9c8-4231-aed7-aeeb73f13648 | sharednet1 | 2ec3f6fc-233a-4e5d-9628-a8764366ea57 | +--------------------------------------+------------+--------------------------------------+ # インスタンス用のセキュリティグループを作成 [cent@dlp ~(keystone)]$ openstack security group create secgroup01 +-----------------+-------------------------------------------------------------------------------+ | Field | Value | +-----------------+-------------------------------------------------------------------------------+ | created_at | 2019-10-25T06:50:07Z | | description | secgroup01 | | id | d4563618-ed32-44e2-8753-904b2c88994c | | location | cloud='', project.domain_id=, project.domain_name='default', project.id='67...| | name | secgroup01 | | project_id | 67b2b71cee384d69939e6b3963e0b2db | | revision_number | 1 | | rules | created_at='2019-10-25T06:50:07Z', direction='egress', ethertype='IPv4', id...| | | created_at='2019-10-25T06:50:07Z', direction='egress', ethertype='IPv6', id...| | tags | [] | | updated_at | 2019-10-25T06:50:07Z | +-----------------+-------------------------------------------------------------------------------+ # インスタンス接続用の SSH キーペア作成 [cent@dlp ~(keystone)]$ ssh-keygen -q -N "" Enter file in which to save the key (/home/cent/.ssh/id_rsa): # 公開鍵登録 [cent@dlp ~(keystone)]$ openstack keypair create --public-key ~/.ssh/id_rsa.pub mykey +-------------+-------------------------------------------------+ | Field | Value | +-------------+-------------------------------------------------+ | fingerprint | 02:d5:c2:25:0e:06:34:a8:06:a2:2b:42:7e:eb:3d:d3 | | name | mykey | | user_id | 14ad73cc98744e01a51886e13d541013 | +-------------+-------------------------------------------------+[cent@dlp ~(keystone)]$ netID=$(openstack network list | grep sharednet1 | awk '{ print $2 }')
[cent@dlp ~(keystone)]$
[cent@dlp ~(keystone)]$ openstack server create --flavor m1.small --image CentOS7 --security-group secgroup01 --nic net-id=$netID --key-name mykey CentOS_7
openstack server list +--------------------------------------+----------+--------+-----------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------+--------+-----------------------+---------+----------+ | 1eea25f6-9744-4e5f-b918-2e705643abbf | CentOS_7 | ACTIVE | sharednet1=10.0.0.217 | CentOS7 | m1.small | +--------------------------------------+----------+--------+-----------------------+---------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 [cent@dlp ~(keystone)]$ openstack security group rule create --protocol icmp --ingress secgroup01 +-------------------+-----------------------------------------------------------------------------+ | Field | Value | +-------------------+-----------------------------------------------------------------------------+ | created_at | 2019-10-25T06:52:03Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | c6b50434-bf8f-4270-841f-49994e38cfb6 | | location | cloud='', project.domain_id=, project.domain_name='default', project.id='...| | name | None | | port_range_max | None | | port_range_min | None | | project_id | 67b2b71cee384d69939e6b3963e0b2db | | protocol | icmp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | d4563618-ed32-44e2-8753-904b2c88994c | | tags | [] | | updated_at | 2019-10-25T06:52:03Z | +-------------------+-----------------------------------------------------------------------------+ # SSH 許可 [cent@dlp ~(keystone)]$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01 +-------------------+-----------------------------------------------------------------------------+ | Field | Value | +-------------------+-----------------------------------------------------------------------------+ | created_at | 2019-10-25T06:52:29Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | b2bb1067-7cca-49fc-916a-4bd6372fb639 | | location | cloud='', project.domain_id=, project.domain_name='default', project.id='...| | name | None | | port_range_max | 22 | | port_range_min | 22 | | project_id | 67b2b71cee384d69939e6b3963e0b2db | | protocol | tcp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | d4563618-ed32-44e2-8753-904b2c88994c | | tags | [] | | updated_at | 2019-10-25T06:52:29Z | +-------------------+-----------------------------------------------------------------------------+[cent@dlp ~(keystone)]$ openstack security group rule list +--------------------------------------+-------------+-----------+-----------+------------+--------------------------------------+--------------------------------------+ | ID | IP Protocol | Ethertype | IP Range | Port Range | Remote Security Group | Security Group | +--------------------------------------+-------------+-----------+-----------+------------+--------------------------------------+--------------------------------------+ | 3fd92ecf-86dd-48a5-9d64-2a0c75744fc0 | None | IPv4 | 0.0.0.0/0 | | None | d4563618-ed32-44e2-8753-904b2c88994c | | 46c65b08-09a9-44e0-904d-934a91220ded | None | IPv6 | ::/0 | | e771f702-01e1-4263-95d0-e5818ea24c2c | e771f702-01e1-4263-95d0-e5818ea24c2c | | 5a4b12f0-f1c2-43bb-b0bc-88a5e3fabafd | None | IPv6 | ::/0 | | None | e771f702-01e1-4263-95d0-e5818ea24c2c | | 76dac696-89a0-44e0-8144-d53c740b9746 | None | IPv4 | 0.0.0.0/0 | | None | e771f702-01e1-4263-95d0-e5818ea24c2c | | b2bb1067-7cca-49fc-916a-4bd6372fb639 | tcp | IPv4 | 0.0.0.0/0 | 22:22 | None | d4563618-ed32-44e2-8753-904b2c88994c | | c6b50434-bf8f-4270-841f-49994e38cfb6 | icmp | IPv4 | 0.0.0.0/0 | | None | d4563618-ed32-44e2-8753-904b2c88994c | | ead55e6f-e2dd-4b21-862c-c2bcb6a724e9 | None | IPv4 | 0.0.0.0/0 | | e771f702-01e1-4263-95d0-e5818ea24c2c | e771f702-01e1-4263-95d0-e5818ea24c2c | | f8282ac9-cd7f-4947-bd58-c2bb50d36b2e | None | IPv6 | ::/0 | | None | d4563618-ed32-44e2-8753-904b2c88994c | +--------------------------------------+-------------+-----------+-----------+------------+--------------------------------------+--------------------------------------+ |
| [5] | インスタンスにログインします。 |
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[cent@dlp ~(keystone)]$ ssh centos@10.0.0.217
The authenticity of host '10.0.0.217 (10.0.0.217)' can't be established.
ECDSA key fingerprint is SHA256:8Mxh+vSFka75QgGaBO/RGWYnFNAOtdgw9q3OQv+QaJw.
ECDSA key fingerprint is MD5:7c:f3:35:bf:ab:01:d7:d0:98:a3:2b:2d:04:11:74:56.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.0.0.217' (ECDSA) to the list of known hosts.
[centos@centos-7 ~]$ # ログインできた
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