OpenStack Queens : Neutron ネットワークを構成する (FLAT)2018/03/07 |
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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 |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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# 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 # 181行目：追記 [ml2_type_flat]
flat_networks = physnet1
[root@network ~]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 194行目：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 | 2018-03-08T04:37:03Z | | description | | | dns_domain | None | | id | 5ffea5aa-33d8-4a43-8517-481aedc8c728 | | 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 | b1da1070c8af427886d0202f8bbe414f | | 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 | 2018-03-08T04:37:03Z | +---------------------------+--------------------------------------+ # [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 Created a new subnet: +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2018-03-08T04:37:28Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | ef33af75-9db0-4342-9e8d-e8c487cf3e4a | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | 5ffea5aa-33d8-4a43-8517-481aedc8c728 | | project_id | b1da1070c8af427886d0202f8bbe414f | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2018-03-08T04:37:28Z | +-------------------+--------------------------------------+ # 設定確認 [root@dlp ~(keystone)]# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | 5ffea5aa-33d8-4a43-8517-481aedc8c728 | sharednet1 | ef33af75-9db0-4342-9e8d-e8c487cf3e4a | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに紐付けてインスタンスを作成・起動します。 |
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# 利用可能な flavor 確認 [cent@dlp ~(keystone)]$ 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 | +--------------------------------------+---------+--------+ | 88551fbc-ce7e-4719-a67a-dd7cad478019 | CentOS7 | active | +--------------------------------------+---------+--------+ # 利用可能なネットワーク確認 [cent@dlp ~(keystone)]$ openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | 5ffea5aa-33d8-4a43-8517-481aedc8c728 | sharednet1 | ef33af75-9db0-4342-9e8d-e8c487cf3e4a | +--------------------------------------+------------+--------------------------------------+ # 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 | 2018-03-08T04:42:07Z | | description | secgroup01 | | id | d32a7faf-8de1-4a30-8d95-c8efa6b72548 | | name | secgroup01 | | project_id | e2236920f07b4fedb55d4ea454173b79 | | revision_number | 2 | | rules | created_at='2018-03-08T04:42:07Z', direction='egress', ethertype='IPv6', ...' | | | created_at='2018-03-08T04:42:07Z', direction='egress', ethertype='IPv4', ...' | | updated_at | 2018-03-08T04:42:07Z | +-----------------+-------------------------------------------------------------------------------+ # 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 | 36:fe:4c:e4:7f:a3:27:1a:f7:a3:4f:fa:b9:a6:16:92 | | name | mykey | | user_id | a1ecf467167542bdb615ba4311f4bf0a | +-------------+-------------------------------------------------+[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=$netID --key-name mykey CentOS_7
openstack server list +--------------------------------------+----------+--------+-----------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------+--------+-----------------------+---------+----------+ | 2a890645-1249-42fe-bb54-99d43f1bee82 | CentOS_7 | ACTIVE | sharednet1=10.0.0.208 | CentOS7 | m1.small | +--------------------------------------+----------+--------+-----------------------+---------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 [cent@dlp ~(keystone)]$ openstack security group rule create --protocol icmp --ingress secgroup01 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2018-03-08T04:51:13Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 3fbcdca5-c5db-40b6-87f8-f09ddd952434 | | name | None | | port_range_max | None | | port_range_min | None | | project_id | e2236920f07b4fedb55d4ea454173b79 | | protocol | icmp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | d32a7faf-8de1-4a30-8d95-c8efa6b72548 | | updated_at | 2018-03-08T04:51:13Z | +-------------------+--------------------------------------+ # SSH 許可 [cent@dlp ~(keystone)]$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2018-03-08T04:51:30Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 88c61ff7-4dfc-42f4-bd70-744a42afa712 | | name | None | | port_range_max | 22 | | port_range_min | 22 | | project_id | e2236920f07b4fedb55d4ea454173b79 | | protocol | tcp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | d32a7faf-8de1-4a30-8d95-c8efa6b72548 | | updated_at | 2018-03-08T04:51:30Z | +-------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack security group rule list +--------------+-------------+-----------+------------+-----------------------------+---------------------+ | ID | IP Protocol | IP Range | Port Range | Remote Security Group | Security Group | +--------------+-------------+-----------+------------+-----------------------------+---------------------+ | 1bf389ef-... | None | None | | 7d6d93eb-05b0-4dd7-87cb-... | 7d6d93eb-05b0-4d... | | 3fbcdca5-... | icmp | 0.0.0.0/0 | | None | d32a7faf-8de1-4a... | | 5e217486-... | None | None | | 7d6d93eb-05b0-4dd7-87cb-... | 7d6d93eb-05b0-4d... | | 68c424ae-... | None | None | | None | 7d6d93eb-05b0-4d... | | 88c61ff7-... | tcp | 0.0.0.0/0 | 22:22 | None | d32a7faf-8de1-4a... | | 8f685930-... | None | None | | None | 7d6d93eb-05b0-4d... | | aa9dbb1d-... | None | None | | None | d32a7faf-8de1-4a... | | f730d562-... | None | None | | None | d32a7faf-8de1-4a... | +--------------+-------------+-----------+------------+-----------------------------+---------------------+ |
| [5] | インスタンスにログインします。 |
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[cent@dlp ~(keystone)]$ ssh centos@10.0.0.208
The authenticity of host '10.0.0.208 (10.0.0.208)' can't be established.
ECDSA key fingerprint is SHA256:xHIBEd/rhh5IPJGv7rXS/VmbM+4i2FJMA6UWPA0UUT8.
ECDSA key fingerprint is MD5:5b:01:d5:5a:40:c5:1a:d7:05:40:f6:96:0a:db:52:6d.
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.
[centos@centos-7 ~]$ # ログインできた
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