OpenStack Pike : Neutron ネットワークを構成する (FLAT)2017/09/04 |
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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 # 166行目：追記 [ml2_type_flat]
flat_networks = physnet1
[root@network ~]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 180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、ここでは 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 | 2017-09-05T08:27:04Z | | description | | | dns_domain | None | | id | a738c6d8-126b-4b2b-bb35-305c3372f54a | | 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 | c9ab6e9feb4d444c8f637fcfe7a67305 | | 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 | 2017-09-05T08:27:04Z | +---------------------------+--------------------------------------+ # [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 | 2017-09-05T08:29:09Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 60004ac5-89f9-48be-a09f-661c76ff5d58 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | a738c6d8-126b-4b2b-bb35-305c3372f54a | | project_id | c9ab6e9feb4d444c8f637fcfe7a67305 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2017-09-05T08:29:09Z | | use_default_subnet_pool | None | +-------------------------+--------------------------------------+ # 設定確認 [root@dlp ~(keystone)]# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | a738c6d8-126b-4b2b-bb35-305c3372f54a | sharednet1 | 60004ac5-89f9-48be-a09f-661c76ff5d58 | +--------------------------------------+------------+--------------------------------------+ |
| [3] | 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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[root@dlp ~(keystone)]# netID=`openstack network list | grep sharednet1 | awk '{ print $2 }'` [root@dlp ~(keystone)]# openstack image list +--------------------------------------+---------+--------+ | ID | Name | Status | +--------------------------------------+---------+--------+ | 68132026-60aa-4afe-8976-398b0482cfd6 | CentOS7 | active | +--------------------------------------+---------+--------+ # キーペア作成 [root@dlp ~(keystone)]# ssh-keygen -q -N "" Enter file in which to save the key (/root/.ssh/id_rsa): # 公開鍵登録 [root@dlp ~(keystone)]# openstack keypair create --public-key ~/.ssh/id_rsa.pub mykey +-------------+-------------------------------------------------+ | Field | Value | +-------------+-------------------------------------------------+ | fingerprint | b3:d6:64:1a:6f:4e:14:63:88:76:15:a4:bd:af:a6:34 | | name | mykey | | user_id | 09d8dfa20e0f40eaae448d369943b195 | +-------------+-------------------------------------------------+
[root@dlp ~(keystone)]#
[root@dlp ~(keystone)]# openstack server create --flavor m1.small --image CentOS7 --security-group default --nic net-id=$netID --key-name mykey CentOS_7
openstack server list +--------------------------------------+----------+--------+-----------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------+--------+-----------------------+---------+----------+ | 344a5689-1512-4bba-af64-43b580e5dcbb | CentOS_7 | ACTIVE | sharednet1=10.0.0.202 | CentOS7 | m1.small | +--------------------------------------+----------+--------+-----------------------+---------+----------+ |
| [4] | 起動した仮想マシンインスタンスにSSHで接続できるように、デフォルトセキュリティグループにポート許可の設定をしておきます。 |
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# ICMP 許可 [root@dlp ~(keystone)]# openstack security group rule create --protocol icmp --ingress default Created a new security_group_rule: +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2017-09-05T08:36:23Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 99059300-c8ba-4680-b4ea-654c95766462 | | name | None | | port_range_max | None | | port_range_min | None | | project_id | 09158bee8c6441519bf3a3743d936566 | | protocol | icmp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | b5e75eee-2435-4b69-afd9-d097179ce150 | | updated_at | 2017-09-05T08:36:23Z | +-------------------+--------------------------------------+ # SSH 許可 [root@dlp ~(keystone)]# openstack security group rule create --protocol tcp --dst-port 22:22 default Created a new security_group_rule: +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2017-09-05T08:36:38Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | d655a400-08d6-4275-b3f4-a7a0681502b6 | | name | None | | port_range_max | 22 | | port_range_min | 22 | | project_id | 09158bee8c6441519bf3a3743d936566 | | protocol | tcp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | b5e75eee-2435-4b69-afd9-d097179ce150 | | updated_at | 2017-09-05T08:36:38Z | +-------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack security group rule list +--------------+-------------+-----------+------------+-----------------------------+-------------------+ | ID | IP Protocol | IP Range | Port Range | Remote Security Group | Security Group | +--------------+-------------+-----------+------------+-----------------------------+-------------------+ | 1ac6e187-... | None | None | | None | b5e75eee-2435-... | | 655ac54e-... | None | None | | None | b5e75eee-2435-... | | 76f54486-... | None | None | | b5e75eee-2435-4b69-afd9-... | b5e75eee-2435-... | | 99059300-... | icmp | 0.0.0.0/0 | | None | b5e75eee-2435-... | | 9fd12567-... | None | None | | b5e75eee-2435-4b69-afd9-... | b5e75eee-2435-... | | d655a400-... | tcp | 0.0.0.0/0 | 22:22 | None | b5e75eee-2435-... | +--------------+-------------+-----------+------------+-----------------------------+-------------------+ |
| [5] | インスタンスにログインします。 |
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[root@dlp ~(keystone)]# ssh centos@10.0.0.202
The authenticity of host '10.0.0.202 (10.0.0.202)' can't be established.
ECDSA key fingerprint is 94:11:48:02:fa:62:ff:9c:c4:75:8f:eb:16:62:a9:ff.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.0.0.202' (ECDSA) to the list of known hosts.
[centos@centos-7 ~]$ # ログインできた
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