OpenStack Pike : Neutron ネットワークを構成する (VXLAN)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、VXLAN タイプの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
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| [1] | Control ノードで以下のように設定変更します。 |
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[root@dlp ~(keystone)]#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # 115行目：tenant_network_types に値を追記 [ml2] type_drivers = flat,vlan,gre,vxlan tenant_network_types = vxlan
# 166行目：追記 [ml2_type_flat]
flat_networks = physnet1
# 220行目：追記 [ml2_type_vxlan] vni_ranges = 1:1000
systemctl restart neutron-server |
| [2] | Network ノードで以下のように設定変更します。 |
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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 # 115行目：tenant_network_types に値を追記 [ml2] type_drivers = flat,vlan,gre,vxlan tenant_network_types = vxlan
# 166行目：追記 [ml2_type_flat]
flat_networks = physnet1
# 220行目：追記 [ml2_type_vxlan] vni_ranges = 1:1000
[root@network ~]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 114行目：追記 [agent]
tunnel_types = vxlan
l2_population = True prevent_arp_spoofing = True # 182行目：追記 ( local_ip はこのノードのローカルIPを指定) [ovs]
local_ip = 10.0.0.50
bridge_mappings = physnet1:br-eth1
[root@network ~]#
for service in dhcp-agent l3-agent metadata-agent openvswitch-agent; do
systemctl restart neutron-$service done # Firewalld 稼働中の場合は停止 [root@network ~]# systemctl stop firewalld [root@network ~]# systemctl disable firewalld |
| [3] | Compute ノードで以下のように設定変更します。 |
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[root@node01 ~]#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # 115行目：tenant_network_types に値を追記 [ml2] type_drivers = flat,vlan,gre,vxlan tenant_network_types = vxlan
# 166行目：追記 [ml2_type_flat]
flat_networks = physnet1
# 220行目：追記 [ml2_type_vxlan] vni_ranges = 1:1000
[root@node01 ~]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 114行目：追記 [agent]
tunnel_types = vxlan
l2_population = True prevent_arp_spoofing = True # 182行目：追記 ( local_ip はこのノードのローカルIPを指定) [ovs]
local_ip = 10.0.0.51
[root@node01 ~]#
systemctl restart neutron-openvswitch-agent
# Firewalld 稼働中の場合は停止 [root@node01 ~]# systemctl stop firewalld [root@node01 ~]# systemctl disable firewalld |
| [4] | 仮想ルータを作成します。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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# 仮想ルーター作成 [root@dlp ~(keystone)]# openstack router create router01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2017-09-06T07:49:37Z | | description | | | distributed | False | | external_gateway_info | None | | flavor_id | None | | ha | False | | id | 1408558e-f10e-4c37-af33-f302f048a44c | | name | router01 | | project_id | 09158bee8c6441519bf3a3743d936566 | | revision_number | None | | routes | | | status | ACTIVE | | tags | | | updated_at | 2017-09-06T07:49:37Z | +-------------------------+--------------------------------------+ |
| [5] | 内部用のネットワークを作成し、仮想ルーターに関連付けます。 |
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# 内部用ネットワーク作成 [root@dlp ~(keystone)]# openstack network create int_net --provider-network-type vxlan +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2017-09-06T07:49:58Z | | description | | | dns_domain | None | | id | b70e8cdc-8c61-4a3b-8dfc-060cba8f82f9 | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | False | | is_vlan_transparent | None | | mtu | 1450 | | name | int_net | | port_security_enabled | True | | project_id | 09158bee8c6441519bf3a3743d936566 | | provider:network_type | vxlan | | provider:physical_network | None | | provider:segmentation_id | 89 | | qos_policy_id | None | | revision_number | 2 | | router:external | Internal | | segments | None | | shared | False | | status | ACTIVE | | subnets | | | tags | | | updated_at | 2017-09-06T07:49:58Z | +---------------------------+--------------------------------------+ # 内部用ネットワークにサブネット作成 [root@dlp ~(keystone)]# openstack subnet create subnet1 --network int_net \ --subnet-range 192.168.100.0/24 --gateway 192.168.100.1 \ --dns-nameserver 10.0.0.10 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | allocation_pools | 192.168.100.2-192.168.100.254 | | cidr | 192.168.100.0/24 | | created_at | 2017-09-06T07:50:25Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | True | | gateway_ip | 192.168.100.1 | | host_routes | | | id | 3627d5d7-8196-469f-897e-2159f695052a | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | b70e8cdc-8c61-4a3b-8dfc-060cba8f82f9 | | project_id | 09158bee8c6441519bf3a3743d936566 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2017-09-06T07:50:25Z | | use_default_subnet_pool | None | +-------------------------+--------------------------------------+ # 仮想ルーターに内部ネットワークを設定 [root@dlp ~(keystone)]# openstack router add subnet router01 subnet1
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| [6] | 外部接続用のネットワークを作成し、仮想ルーターに関連付けます。 |
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# 外部用ネットワーク作成 [root@dlp ~(keystone)]# openstack network create \ --provider-physical-network physnet1 \ --provider-network-type flat --external ext_net +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2017-09-06T07:51:02Z | | description | | | dns_domain | None | | id | e27d7f02-773f-4e11-8aa9-e70ebc05ab76 | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | False | | is_vlan_transparent | None | | mtu | 1500 | | name | ext_net | | port_security_enabled | True | | project_id | 09158bee8c6441519bf3a3743d936566 | | provider:network_type | flat | | provider:physical_network | physnet1 | | provider:segmentation_id | None | | qos_policy_id | None | | revision_number | 3 | | router:external | External | | segments | None | | shared | False | | status | ACTIVE | | subnets | | | tags | | | updated_at | 2017-09-06T07:51:02Z | +---------------------------+--------------------------------------+ # 外部用ネットワークにサブネット作成 [root@dlp ~(keystone)]# openstack subnet create subnet2 \ --network ext_net --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 --no-dhcp +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2017-09-06T07:51:24Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | False | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 85f3a6a0-07ab-493d-91a3-cd60ecd908c7 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet2 | | network_id | e27d7f02-773f-4e11-8aa9-e70ebc05ab76 | | project_id | 09158bee8c6441519bf3a3743d936566 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2017-09-06T07:51:24Z | | use_default_subnet_pool | None | +-------------------------+--------------------------------------+ # 仮想ルーターにゲートウェイを設定 [root@dlp ~(keystone)]# openstack router set router01 --external-gateway ext_net |
| [7] | 内部ネットワークを関連付けた仮想マシンインスタンスを作成して起動します。 |
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[root@dlp ~(keystone)]#
[root@dlp ~(keystone)]# Int_Net_ID=`openstack network list | grep int_net | awk '{ print $2 }'` openstack image list +--------------------------------------+---------+--------+ | ID | Name | Status | +--------------------------------------+---------+--------+ | 68132026-60aa-4afe-8976-398b0482cfd6 | CentOS7 | active | +--------------------------------------+---------+--------+ # キーペア作成 [root@dlp ~(keystone)]# ssh-keygen -q -N "" Enter file in which to save the key (/root/.ssh/id_rsa): # 公開鍵登録 [root@dlp ~(keystone)]# openstack keypair create --public-key ~/.ssh/id_rsa.pub mykey +-------------+-------------------------------------------------+ | Field | Value | +-------------+-------------------------------------------------+ | fingerprint | 35:15:20:3f:b9:51:9e:b3:91:41:6a:ac:91:30:3d:22 | | name | mykey | | user_id | 09d8dfa20e0f40eaae448d369943b195 | +-------------+-------------------------------------------------+
[root@dlp ~(keystone)]#
[root@dlp ~(keystone)]# openstack server create --flavor m1.small --image CentOS7 --security-group default --nic net-id=$Int_Net_ID --key-name mykey CentOS_7
openstack server list +--------------------------------------+----------+--------+-----------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------+--------+-----------------------+---------+----------+ | 4f43ccb8-68b0-4406-9c4d-46990285cf8e | CentOS_7 | ACTIVE | int_net=192.168.100.7 | CentOS7 | m1.small | +--------------------------------------+----------+--------+-----------------------+---------+----------+ |
| [8] | 作成した仮想マシンインスタンスにフローティングIP を割り当てます。 |
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[root@dlp ~(keystone)]# openstack floating ip create ext_net +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2017-09-06T07:55:10Z | | description | | | fixed_ip_address | None | | floating_ip_address | 10.0.0.201 | | floating_network_id | e27d7f02-773f-4e11-8aa9-e70ebc05ab76 | | id | af5feb8b-2d11-42ea-9ea4-f0df0886e255 | | name | 10.0.0.201 | | port_id | None | | project_id | 09158bee8c6441519bf3a3743d936566 | | revision_number | 0 | | router_id | None | | status | DOWN | | updated_at | 2017-09-06T07:55:10Z | +---------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack server add floating ip CentOS_7 10.0.0.201 # 設定確認 [root@dlp ~(keystone)]# openstack floating ip show 10.0.0.201 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2017-09-06T07:55:10Z | | description | | | fixed_ip_address | 192.168.100.7 | | floating_ip_address | 10.0.0.201 | | floating_network_id | e27d7f02-773f-4e11-8aa9-e70ebc05ab76 | | id | af5feb8b-2d11-42ea-9ea4-f0df0886e255 | | name | 10.0.0.201 | | port_id | cf1722ca-84b9-4857-9791-dfa9fa71991a | | project_id | 09158bee8c6441519bf3a3743d936566 | | revision_number | 1 | | router_id | 1408558e-f10e-4c37-af33-f302f048a44c | | status | ACTIVE | | updated_at | 2017-09-06T07:55:29Z | +---------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack server list +-----------+----------+--------+-----------------------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +-----------+----------+--------+-----------------------------------+---------+----------+ | 4f43ccb8- | CentOS_7 | ACTIVE | int_net=192.168.100.7, 10.0.0.201 | CentOS7 | m1.small | +-----------+----------+--------+-----------------------------------+---------+----------+ |
| [9] | 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 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2017-09-06T07:56:43Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 912d420b-074e-4385-b0c9-6614ae0ccef6 | | 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 | 223c2ca2-ee19-45e8-8d90-24c785c69624 | | updated_at | 2017-09-06T07:56:43Z | +-------------------+--------------------------------------+ # SSH 許可 [root@dlp ~(keystone)]# openstack security group rule create --protocol tcp --dst-port 22:22 default +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2017-09-06T07:56:57Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 1c12b037-2620-42a4-af36-b66016c06778 | | 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 | 223c2ca2-ee19-45e8-8d90-24c785c69624 | | updated_at | 2017-09-06T07:56:57Z | +-------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack security group rule list +--------------+-------------+-----------+------------+-----------------------------+-------------------+ | ID | IP Protocol | IP Range | Port Range | Remote Security Group | Security Group | +--------------+-------------+-----------+------------+-----------------------------+-------------------+ | 1c12b037-... | tcp | 0.0.0.0/0 | 22:22 | None | 223c2ca2-ee19-... | | 4678dc3a-... | None | None | | 223c2ca2-ee19-45e8-8d90-... | 223c2ca2-ee19-... | | 46e00d97-... | None | None | | None | 223c2ca2-ee19-... | | 6c315c95-... | None | None | | 223c2ca2-ee19-45e8-8d90-... | 223c2ca2-ee19-... | | 7673b04c-... | None | None | | None | 223c2ca2-ee19-... | | 912d420b-... | icmp | 0.0.0.0/0 | | None | 223c2ca2-ee19-... | +--------------+-------------+-----------+------------+-----------------------------+-------------------+ |
| [10] | 仮想マシンインスタンスに割りあてられたフローティング IP 宛てに SSH 接続することで、インスタンスにログインできます。 |
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[root@dlp ~(keystone)]# openstack server list +-----------+----------+--------+-----------------------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +-----------+----------+--------+-----------------------------------+---------+----------+ | 4f43ccb8- | CentOS_7 | ACTIVE | int_net=192.168.100.7, 10.0.0.201 | CentOS7 | m1.small | +-----------+----------+--------+-----------------------------------+---------+----------+[root@dlp ~(keystone)]# ssh centos@10.0.0.201
The authenticity of host '10.0.0.201 (10.0.0.201)' 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 '10.0.0.201' (ECDSA) to the list of known hosts.
[centos@centos-7 ~]$ # ログインできた
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