OpenStack Stein : Neutron ネットワークを構成する (FLAT)2019/05/16 |
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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 | 2019-05-16T05:08:14Z |
| description | |
| dns_domain | None |
| id | d1972b24-d8ca-4e18-8c91-5132908badcd |
| ipv4_address_scope | None |
| ipv6_address_scope | None |
| is_default | False |
| is_vlan_transparent | None |
| location | Munch({'project': Munch({'domain_name': None, 'domain_id': None, '...}) |
| mtu | 1500 |
| name | sharednet1 |
| port_security_enabled | True |
| project_id | c5e87c9b460e4f16801b4102019c97e6 |
| 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 | 2019-05-16T05:08:14Z |
+---------------------------+-------------------------------------------------------------------------+
# [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 Created a new subnet:
+-------------------+--------------------------------------------------------------------------------+
| Field | Value |
+-------------------+--------------------------------------------------------------------------------+
| allocation_pools | 10.0.0.200-10.0.0.254 |
| cidr | 10.0.0.0/24 |
| created_at | 2019-05-16T05:09:03Z |
| description | |
| dns_nameservers | 10.0.0.10 |
| enable_dhcp | True |
| gateway_ip | 10.0.0.1 |
| host_routes | |
| id | aa2459e8-11ce-4eee-a49a-cb904954f004 |
| ip_version | 4 |
| ipv6_address_mode | None |
| ipv6_ra_mode | None |
| location | Munch({'project': Munch({'domain_name': None, 'domain_id': None, 'name': ...}) |
| name | subnet1 |
| network_id | d1972b24-d8ca-4e18-8c91-5132908badcd |
| prefix_length | None |
| project_id | c5e87c9b460e4f16801b4102019c97e6 |
| revision_number | 0 |
| segment_id | None |
| service_types | |
| subnetpool_id | None |
| tags | |
| updated_at | 2019-05-16T05:09:03Z |
+-------------------+--------------------------------------------------------------------------------+
# 設定確認 [root@dlp ~(keystone)]# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | d1972b24-d8ca-4e18-8c91-5132908badcd | sharednet1 | aa2459e8-11ce-4eee-a49a-cb904954f004 | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに紐付けてインスタンスを作成・起動します。 |
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# 利用可能な flavor 確認 [cent@dlp ~(keystone)]$ 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 | +--------------------------------------+---------+--------+ | 0d0bf9ae-9d4c-445f-b2e0-5b322dffa988 | CentOS7 | active | +--------------------------------------+---------+--------+ # 利用可能なネットワーク確認 [cent@dlp ~(keystone)]$ openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | d1972b24-d8ca-4e18-8c91-5132908badcd | sharednet1 | aa2459e8-11ce-4eee-a49a-cb904954f004 | +--------------------------------------+------------+--------------------------------------+ # 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 | 2019-05-16T05:11:17Z |
| description | secgroup01 |
| id | 448cbb81-75f8-452d-bc88-4e3c9ce8c7d9 |
| location | Munch({'project': Munch({'domain_name': 'default', 'domain_id': None, 'name': 'hiroshima', 'id': u'caab6ec580994e6481cd104b9d210f3f'}), 'cloud': '', 'region_name': '', 'zone': None}) |
| name | secgroup01 |
| project_id | caab6ec580994e6481cd104b9d210f3f |
| revision_number | 1 |
| rules | created_at='2019-05-16T05:11:17Z', direction='egress', ethertype='IPv6', id='b98ee0ef-4018-4416-868b-3827a05946ca', updated_at='2019-05-16T05:11:17Z' |
| | created_at='2019-05-16T05:11:17Z', direction='egress', ethertype='IPv4', id='d6bbe952-a308-41e9-9b4d-f021e63c0e43', updated_at='2019-05-16T05:11:17Z' |
| tags | [] |
| updated_at | 2019-05-16T05:11:17Z |
+-----------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
# 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 | d8:78:b4:66:2a:e3:25:9f:92:bc:36:59:84:0a:64:93 | | name | mykey | | user_id | b5dd128c2fd744c892ad7d1fb39d21a0 | +-------------+-------------------------------------------------+[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=$netID --key-name mykey CentOS_7
openstack server list +--------------------------------------+----------+--------+-----------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------+--------+-----------------------+---------+----------+ | a19e0420-8cb7-47a1-bf07-1a0e0569212f | CentOS_7 | ACTIVE | sharednet1=10.0.0.219 | CentOS7 | m1.small | +--------------------------------------+----------+--------+-----------------------+---------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 [cent@dlp ~(keystone)]$ openstack security group rule create --protocol icmp --ingress secgroup01
+-------------------+--------------------------------------------------------------------------------+
| Field | Value |
+-------------------+--------------------------------------------------------------------------------+
| created_at | 2019-05-16T05:20:20Z |
| description | |
| direction | ingress |
| ether_type | IPv4 |
| id | af4776ca-6f39-4d26-aed9-06b09d3c3d85 |
| location | Munch({'project': Munch({'domain_name': 'default', 'domain_id': None, 'na...}) |
| name | None |
| port_range_max | None |
| port_range_min | None |
| project_id | caab6ec580994e6481cd104b9d210f3f |
| protocol | icmp |
| remote_group_id | None |
| remote_ip_prefix | 0.0.0.0/0 |
| revision_number | 0 |
| security_group_id | 448cbb81-75f8-452d-bc88-4e3c9ce8c7d9 |
| tags | [] |
| updated_at | 2019-05-16T05:20:20Z |
+-------------------+--------------------------------------------------------------------------------+
# SSH 許可 [cent@dlp ~(keystone)]$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01
+-------------------+--------------------------------------------------------------------------------+
| Field | Value |
+-------------------+--------------------------------------------------------------------------------+
| created_at | 2019-05-16T05:20:51Z |
| description | |
| direction | ingress |
| ether_type | IPv4 |
| id | 4c765423-dc8b-447a-b407-351e98e645f5 |
| location | Munch({'project': Munch({'domain_name': 'default', 'domain_id': None, 'na...}) |
| name | None |
| port_range_max | 22 |
| port_range_min | 22 |
| project_id | caab6ec580994e6481cd104b9d210f3f |
| protocol | tcp |
| remote_group_id | None |
| remote_ip_prefix | 0.0.0.0/0 |
| revision_number | 0 |
| security_group_id | 448cbb81-75f8-452d-bc88-4e3c9ce8c7d9 |
| tags | [] |
| updated_at | 2019-05-16T05:20:51Z |
+-------------------+--------------------------------------------------------------------------------+
[cent@dlp ~(keystone)]$ openstack security group rule list +--------------------------------------+-------------+-----------+------------+--------------------------------------+--------------------------------------+ | ID | IP Protocol | IP Range | Port Range | Remote Security Group | Security Group | +--------------------------------------+-------------+-----------+------------+--------------------------------------+--------------------------------------+ | 4c765423-dc8b-447a-b407-351e98e645f5 | tcp | 0.0.0.0/0 | 22:22 | None | 448cbb81-75f8-452d-bc88-4e3c9ce8c7d9 | | 665074cc-31af-4195-9924-7b2082a4e8db | None | None | | None | f32328f7-b100-4f3a-a3aa-c10b98f24026 | | 828a02bb-c1c9-4f4a-b8af-6bfb3f76a07f | None | None | | None | f32328f7-b100-4f3a-a3aa-c10b98f24026 | | aa49bf4a-a63f-4008-9b8f-1f4a9c217ff1 | None | None | | f32328f7-b100-4f3a-a3aa-c10b98f24026 | f32328f7-b100-4f3a-a3aa-c10b98f24026 | | af4776ca-6f39-4d26-aed9-06b09d3c3d85 | icmp | 0.0.0.0/0 | | None | 448cbb81-75f8-452d-bc88-4e3c9ce8c7d9 | | b98ee0ef-4018-4416-868b-3827a05946ca | None | None | | None | 448cbb81-75f8-452d-bc88-4e3c9ce8c7d9 | | d6bbe952-a308-41e9-9b4d-f021e63c0e43 | None | None | | None | 448cbb81-75f8-452d-bc88-4e3c9ce8c7d9 | | ff674b2c-a4be-4f85-abd2-c05c23280ce5 | None | None | | f32328f7-b100-4f3a-a3aa-c10b98f24026 | f32328f7-b100-4f3a-a3aa-c10b98f24026 | +--------------------------------------+-------------+-----------+------------+--------------------------------------+--------------------------------------+ |
| [5] | インスタンスにログインします。 |
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[cent@dlp ~(keystone)]$ ssh centos@10.0.0.219
The authenticity of host '10.0.0.219 (10.0.0.219)' can't be established.
ECDSA key fingerprint is SHA256:8JIQDmNwua3M1autPC3YjFOpTuP525whYxaWojC9fbw.
ECDSA key fingerprint is MD5:8e:78:d9:bf:0f:25:e4:14:b2:a2:0a:d7:58:cc:f4:66.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.0.0.219' (ECDSA) to the list of known hosts.
Last login: Wed May 15 00:33:45 2019
[centos@centos-7 ~]$ # ログインできた
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