OpenStack Victoria : Neutron ネットワークを構成する (FLAT)2020/11/17 |
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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 2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 # [eth1] は環境によって異なるため自身の名称に置き換え [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 | 2020-11-17T05:40:56Z | | description | | | dns_domain | None | | id | a055cd15-90ac-4a92-8fee-62125d09f9dc | | 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 | 4e42859fe8704e8aaddb5369551b6c52 | | 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 | 2020-11-17T05:40:57Z | +---------------------------+--------------------------------------+ # [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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 Created a new subnet: +----------------------+--------------------------------------+ | Field | Value | +----------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2020-11-17T05:41:15Z | | description | | | dns_nameservers | 10.0.0.10 | | dns_publish_fixed_ip | None | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | ca63331e-13e7-4639-bef0-92a1da48cc89 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | a055cd15-90ac-4a92-8fee-62125d09f9dc | | prefix_length | None | | project_id | 4e42859fe8704e8aaddb5369551b6c52 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2020-11-17T05:41:15Z | +----------------------+--------------------------------------+ # 設定確認 [root@dlp ~(keystone)]# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | a055cd15-90ac-4a92-8fee-62125d09f9dc | sharednet1 | ca63331e-13e7-4639-bef0-92a1da48cc89 | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに紐付けてインスタンスを作成/起動します。 |
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# 利用可能な [flavor] 確認 [cent@dlp ~(keystone)]$ 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 | +--------------------------------------+---------+--------+ | 8507b98f-3e9d-4ac9-92f9-9ee8d7f69339 | CentOS8 | active | +--------------------------------------+---------+--------+ # 利用可能なネットワーク確認 [cent@dlp ~(keystone)]$ openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | a055cd15-90ac-4a92-8fee-62125d09f9dc | sharednet1 | ca63331e-13e7-4639-bef0-92a1da48cc89 | +--------------------------------------+------------+--------------------------------------+ # 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 | 2020-11-17T05:44:20Z | | description | secgroup01 | | id | 684a3bb5-c41c-4ec7-b62a-3e6bc6e10866 | | name | secgroup01 | | project_id | 8cc9f93ed89f40e28a610d025462c020 | | revision_number | 1 | | rules | created_at='2020-11-17T05:44:20Z', direction='egress', ethertype='IPv4', ... | | | created_at='2020-11-17T05:44:20Z', direction='egress', ethertype='IPv6', ... | | stateful | True | | tags | [] | | updated_at | 2020-11-17T05:44:20Z | +-----------------+------------------------------------------------------------------------------+ # 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 | 7e:a9:19:01:1b:b8:14:97:87:2a:14:fd:31:72:1c:2e | | name | mykey | | user_id | bb4ae84eefc04357987ec43b8e93118c | +-------------+-------------------------------------------------+[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 CentOS8 --security-group secgroup01 --nic net-id=$netID --key-name mykey CentOS-8
openstack server list +--------------------------------------+----------+--------+-----------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------+--------+-----------------------+---------+----------+ | 496c3ca3-f10e-4d8d-b29f-49db274b2826 | CentOS-8 | ACTIVE | sharednet1=10.0.0.239 | CentOS8 | m1.small | +--------------------------------------+----------+--------+-----------------------+---------+----------+ |
| [4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
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# ICMP 許可 [cent@dlp ~(keystone)]$ openstack security group rule create --protocol icmp --ingress secgroup01 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2020-11-17T05:47:25Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | bae2c23b-1e30-42e5-a452-9cad7584d95f | | name | None | | port_range_max | None | | port_range_min | None | | project_id | 8cc9f93ed89f40e28a610d025462c020 | | protocol | icmp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 684a3bb5-c41c-4ec7-b62a-3e6bc6e10866 | | tags | [] | | updated_at | 2020-11-17T05:47:25Z | +-------------------+--------------------------------------+ # SSH 許可 [cent@dlp ~(keystone)]$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2020-11-17T05:47:57Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | e31087a5-340a-41b4-a9ff-dc505e4c4824 | | name | None | | port_range_max | 22 | | port_range_min | 22 | | project_id | 8cc9f93ed89f40e28a610d025462c020 | | protocol | tcp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | 684a3bb5-c41c-4ec7-b62a-3e6bc6e10866 | | tags | [] | | updated_at | 2020-11-17T05:47:57Z | +-------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack security group rule list +--------------------------------------+-------------+-----------+-----------+------------+-----------+ | ID | IP Protocol | Ethertype | IP Range | Port Range | Remote Se | +--------------------------------------+-------------+-----------+-----------+------------+-----------+ | 0e9a18c5-1fe2-4a1e-b2c2-2ead9959ecde | None | IPv6 | ::/0 | | None | | 12daa3ff-442b-4634-a592-1211e00d9e01 | None | IPv4 | 0.0.0.0/0 | | None | | 18baceb3-6585-4f41-8cda-573cfc480116 | None | IPv4 | 0.0.0.0/0 | | None | | 554cfb39-2e9c-4143-968c-e130654036f6 | None | IPv6 | ::/0 | | None | | 9848c262-be1f-4fe4-9342-3c39ab862eb8 | None | IPv6 | ::/0 | | 23b606... | | bae2c23b-1e30-42e5-a452-9cad7584d95f | icmp | IPv4 | 0.0.0.0/0 | | None | | e008a02c-7e1a-4a13-a5c6-f2ffdacfc70d | None | IPv4 | 0.0.0.0/0 | | 23b606... | | e31087a5-340a-41b4-a9ff-dc505e4c4824 | tcp | IPv4 | 0.0.0.0/0 | 22:22 | None | +--------------------------------------+-------------+-----------+-----------+------------+-----------+ |
| [5] | インスタンスにログインします。 |
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[cent@dlp ~(keystone)]$ ssh centos@10.0.0.239 The authenticity of host '10.0.0.239 (10.0.0.239)' can't be established. ECDSA key fingerprint is SHA256:MrZv8Ecki7TpOJPHL/tWEXyQOvv6Z6LHBBknu8pVzgo. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '10.0.0.239' (ECDSA) to the list of known hosts. [centos@centos-8 ~]$ # ログインできた |
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