OpenStack Stein : Neutron ネットワークを構成する (FLAT)2019/05/16 |
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) |
[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。 |
# 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。 |
[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 $projectID --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 Created a new subnet: +-------------------+--------------------------------------------------------------------------------+ | Field | Value | +-------------------+--------------------------------------------------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2019-05-16T05:09:03Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | aa2459e8-11ce-4eee-a49a-cb904954f004 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | location | Munch({'project': Munch({'domain_name': None, 'domain_id': None, 'name': ...}) | | name | subnet1 | | network_id | d1972b24-d8ca-4e18-8c91-5132908badcd | | prefix_length | None | | project_id | c5e87c9b460e4f16801b4102019c97e6 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2019-05-16T05:09:03Z | +-------------------+--------------------------------------------------------------------------------+ # 設定確認 [root@dlp ~(keystone)]# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | d1972b24-d8ca-4e18-8c91-5132908badcd | sharednet1 | aa2459e8-11ce-4eee-a49a-cb904954f004 | +--------------------------------------+------------+--------------------------------------+ |
[3] | 任意のユーザーでログインし、作成したネットワークをインスタンスに紐付けてインスタンスを作成・起動します。 |
# 利用可能な flavor 確認 [cent@dlp ~(keystone)]$ 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=$netID --key-name mykey CentOS_7
openstack server list +--------------------------------------+----------+--------+-----------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------+--------+-----------------------+---------+----------+ | a19e0420-8cb7-47a1-bf07-1a0e0569212f | CentOS_7 | ACTIVE | sharednet1=10.0.0.219 | CentOS7 | m1.small | +--------------------------------------+----------+--------+-----------------------+---------+----------+ |
[4] | 起動した仮想マシンインスタンスに SSH 接続できるように、先に作成したセキュリティグループにポート許可の設定を追加します。 |
# ICMP 許可 [cent@dlp ~(keystone)]$ 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。 |
[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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