Ubuntu 16.04
Sponsored Link

OpenStack Ocata : Neutron ネットワーク構成(VXLAN)
2017/03/15
 
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  |        |                       |eth1    |        Libvirt        |
     |  Memcached  httpd     |        |  L2,L3,Metadata Agent +----    |      Nova Compute     |
     |  Keystone   Glance    |        |                       |        |        L2 Agent       |
     |  Nova API             |        |                       |        |                       |
     |  Neutron Server       |        |                       |        |                       |
     +-----------------------+        +-----------------------+        +-----------------------+

[1] Control ノードで以下のように設定変更します。
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 115行目: tenant_network_types に値を追記

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@dlp ~(keystone)#
systemctl restart neutron-server

[2] Network ノードで以下のように設定変更します。
root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 115行目: tenant_network_types に値を追記

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/linuxbridge_agent.ini
# 114行目:追記

[agent]
prevent_arp_spoofing = True
# 145行目:追記

[linux_bridge]
physical_interface_mappings = physnet1:eth1
# 181行目:追記

[vxlan]
enable_vxlan = True
l2_population = True
root@network:~#
vi /etc/neutron/dhcp_agent.ini
# 83行目:追記

dnsmasq_config_file = /etc/neutron/dnsmasq-neutron.conf
root@network:~#
vi /etc/neutron/dnsmasq-neutron.conf
# 新規作成

dhcp-option-force=26,1450
root@network:~#
for service in l3-agent dhcp-agent metadata-agent linuxbridge-agent; do
systemctl restart neutron-$service
done

[3] Compute ノードで以下のように設定変更します。
root@node01:~#
echo 'net.bridge.bridge-nf-call-iptables=1' >> /etc/sysctl.conf

root@node01:~#
echo 'net.bridge.bridge-nf-call-ip6tables=1' >> /etc/sysctl.conf

root@node01:~#
sysctl -p

root@node01:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 115行目: tenant_network_types に値を追記

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/linuxbridge_agent.ini
# 114行目:追記

[agent]
prevent_arp_spoofing = True
# 181行目:追記

[vxlan]
enable_vxlan = True
l2_population = True
root@node01:~#
systemctl restart neutron-linuxbridge-agent

[4] 仮想ルータを作成しておきます。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。
# 仮想ルーター作成

root@dlp ~(keystone)#
openstack router create router01

Created a new router:
+-------------------------+--------------------------------------+
| Field                   | Value                                |
+-------------------------+--------------------------------------+
| admin_state_up          | UP                                   |
| availability_zone_hints |                                      |
| availability_zones      |                                      |
| created_at              | 2017-03-16T05:47:22Z                 |
| description             |                                      |
| distributed             | False                                |
| external_gateway_info   | None                                 |
| flavor_id               | None                                 |
| ha                      | False                                |
| id                      | 3dd71e78-6f72-4ea9-95cd-94f2fdfd58b7 |
| name                    | router01                             |
| project_id              | ef6b5d01da394383a1afba725735a727     |
| revision_number         | None                                 |
| routes                  |                                      |
| status                  | ACTIVE                               |
| updated_at              | 2017-03-16T05:47:22Z                 |
+-------------------------+--------------------------------------+
[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。
# 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                | 2017-03-16T05:47:59Z                 |
| description               |                                      |
| dns_domain                | None                                 |
| id                        | 428b6cd1-2df4-446c-a1c2-0cab74a730ac |
| ipv4_address_scope        | None                                 |
| ipv6_address_scope        | None                                 |
| is_default                | None                                 |
| mtu                       | 1450                                 |
| name                      | int_net                              |
| port_security_enabled     | True                                 |
| project_id                | ef6b5d01da394383a1afba725735a727     |
| provider:network_type     | vxlan                                |
| provider:physical_network | None                                 |
| provider:segmentation_id  | 80                                   |
| qos_policy_id             | None                                 |
| revision_number           | 3                                    |
| router:external           | Internal                             |
| segments                  | None                                 |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| updated_at                | 2017-03-16T05:47:59Z                 |
+---------------------------+--------------------------------------+

# 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        | 2017-03-16T05:48:40Z                 |
| description       |                                      |
| dns_nameservers   | 10.0.0.10                            |
| enable_dhcp       | True                                 |
| gateway_ip        | 192.168.100.1                        |
| host_routes       |                                      |
| id                | e4ad1184-3d88-4ac4-b89d-cf509cb0c52e |
| ip_version        | 4                                    |
| ipv6_address_mode | None                                 |
| ipv6_ra_mode      | None                                 |
| name              | subnet1                              |
| network_id        | 428b6cd1-2df4-446c-a1c2-0cab74a730ac |
| project_id        | ef6b5d01da394383a1afba725735a727     |
| revision_number   | 2                                    |
| segment_id        | None                                 |
| service_types     |                                      |
| subnetpool_id     | None                                 |
| updated_at        | 2017-03-16T05:48:40Z                 |
+-------------------+--------------------------------------+

# 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

[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。
# 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                | 2017-03-16T05:49:43Z                 |
| description               |                                      |
| dns_domain                | None                                 |
| id                        | febd4268-45ce-4690-8252-d4ebdab9bccc |
| ipv4_address_scope        | None                                 |
| ipv6_address_scope        | None                                 |
| is_default                | False                                |
| mtu                       | 1500                                 |
| name                      | ext_net                              |
| port_security_enabled     | True                                 |
| project_id                | ef6b5d01da394383a1afba725735a727     |
| provider:network_type     | flat                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | None                                 |
| qos_policy_id             | None                                 |
| revision_number           | 4                                    |
| router:external           | External                             |
| segments                  | None                                 |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| updated_at                | 2017-03-16T05:49:44Z                 |
+---------------------------+--------------------------------------+

# 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        | 2017-03-16T05:50:21Z                 |
| description       |                                      |
| dns_nameservers   | 10.0.0.10                            |
| enable_dhcp       | False                                |
| gateway_ip        | 10.0.0.1                             |
| host_routes       |                                      |
| id                | 4059076f-63b8-4167-bb04-79258025fb81 |
| ip_version        | 4                                    |
| ipv6_address_mode | None                                 |
| ipv6_ra_mode      | None                                 |
| name              | subnet2                              |
| network_id        | febd4268-45ce-4690-8252-d4ebdab9bccc |
| project_id        | ef6b5d01da394383a1afba725735a727     |
| revision_number   | 2                                    |
| segment_id        | None                                 |
| service_types     |                                      |
| subnetpool_id     | None                                 |
| updated_at        | 2017-03-16T05:50:21Z                 |
+-------------------+--------------------------------------+

# 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。
root@dlp ~(keystone)#
Int_Net_ID=`openstack network list | grep int_net | awk '{ print $2 }'`

root@dlp ~(keystone)#
openstack image list

+--------------------------------------+------------+--------+
| ID                                   | Name       | Status |
+--------------------------------------+------------+--------+
| 94b334bf-178f-46b2-ac6f-4e49de6442a1 | Ubuntu1604 | active |
+--------------------------------------+------------+--------+

root@dlp ~(keystone)#
openstack server create --flavor m1.small --image Ubuntu1604 --security-group default --nic net-id=$Int_Net_ID Ubuntu_1604

root@dlp ~(keystone)#
openstack server list

+--------------------+-------------+--------+---------------------+------------+
| ID                 | Name        | Status | Networks            | Image Name |
+--------------------+-------------+--------+---------------------+------------+
| 17ae3ad9-0a0d-     | Ubuntu_1604 | ACTIVE | int_net=192.168.100 | Ubuntu1604 |
| 485d-              |             |        | .8                  |            |
| b1c1-461821b0b1d2  |             |        |                     |            |
+--------------------+-------------+--------+---------------------+------------+
[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。
root@dlp ~(keystone)#
openstack floating ip create ext_net

Created a new floatingip:
+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| created_at          | 2017-03-16T05:53:04Z                 |
| description         |                                      |
| fixed_ip_address    | None                                 |
| floating_ip_address | 10.0.0.205                           |
| floating_network_id | febd4268-45ce-4690-8252-d4ebdab9bccc |
| id                  | 14425492-59c8-41eb-b2ce-5a396789b4ea |
| name                | None                                 |
| port_id             | None                                 |
| project_id          | ef6b5d01da394383a1afba725735a727     |
| revision_number     | 1                                    |
| router_id           | None                                 |
| status              | DOWN                                 |
| updated_at          | 2017-03-16T05:53:04Z                 |
+---------------------+--------------------------------------+

root@dlp ~(keystone)#
openstack server add floating ip Ubuntu_1604 10.0.0.205

# 設定確認

root@dlp ~(keystone)#
openstack floating ip show 10.0.0.205

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| created_at          | 2017-03-16T05:53:04Z                 |
| description         |                                      |
| fixed_ip_address    | 192.168.100.8                        |
| floating_ip_address | 10.0.0.205                           |
| floating_network_id | febd4268-45ce-4690-8252-d4ebdab9bccc |
| id                  | 14425492-59c8-41eb-b2ce-5a396789b4ea |
| name                | None                                 |
| port_id             | 223f7838-ae6b-404a-b524-63715a8055d6 |
| project_id          | ef6b5d01da394383a1afba725735a727     |
| revision_number     | 2                                    |
| router_id           | 3dd71e78-6f72-4ea9-95cd-94f2fdfd58b7 |
| status              | ACTIVE                               |
| updated_at          | 2017-03-16T05:53:45Z                 |
+---------------------+--------------------------------------+
[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。
# ICMP 許可

root@dlp ~(keystone)#
openstack security group rule create --protocol icmp --ingress default

+-------------------+--------------------------------------+
| Field             | Value                                |
+-------------------+--------------------------------------+
| created_at        | 2017-03-10T06:45:14Z                 |
| description       |                                      |
| direction         | ingress                              |
| ether_type        | IPv4                                 |
| id                | faf40532-ceea-41ad-a5fb-11b857c022ce |
| name              | None                                 |
| port_range_max    | None                                 |
| port_range_min    | None                                 |
| project_id        | 763d3fd7411e4b42982d4d7022f1e335     |
| protocol          | icmp                                 |
| remote_group_id   | None                                 |
| remote_ip_prefix  | 0.0.0.0/0                            |
| revision_number   | 1                                    |
| security_group_id | cb6894d3-846b-4135-8cc6-25842b67c6a6 |
| updated_at        | 2017-03-10T06:45:14Z                 |
+-------------------+--------------------------------------+

# SSH 許可

root@dlp ~(keystone)#
openstack security group rule create --protocol tcp --dst-port 22:22 default

+-------------------+--------------------------------------+
| Field             | Value                                |
+-------------------+--------------------------------------+
| created_at        | 2017-03-10T06:45:31Z                 |
| description       |                                      |
| direction         | ingress                              |
| ether_type        | IPv4                                 |
| id                | 15421d61-0343-40f9-8086-2e53e526248d |
| name              | None                                 |
| port_range_max    | 22                                   |
| port_range_min    | 22                                   |
| project_id        | 763d3fd7411e4b42982d4d7022f1e335     |
| protocol          | tcp                                  |
| remote_group_id   | None                                 |
| remote_ip_prefix  | 0.0.0.0/0                            |
| revision_number   | 1                                    |
| security_group_id | cb6894d3-846b-4135-8cc6-25842b67c6a6 |
| updated_at        | 2017-03-10T06:45:31Z                 |
+-------------------+--------------------------------------+

root@dlp ~(keystone)#
openstack security group rule list

+------------+-------------+-----------+------------+-----------------------+----------------+
| ID         | IP Protocol | IP Range  | Port Range | Remote Security Group | Security Group |
+------------+-------------+-----------+------------+-----------------------+----------------+
| 15421d61-0 | tcp         | 0.0.0.0/0 | 22:22      | None                  | cb6894d3-846b- |
| 343-40f9-8 |             |           |            |                       | 4135-8cc6-2584 |
| 086-2e53e5 |             |           |            |                       | 2b67c6a6       |
| 26248d     |             |           |            |                       |                |
| 9928f5fc-8 | None        | None      |            | None                  | cb6894d3-846b- |
| c94-4458-8 |             |           |            |                       | 4135-8cc6-2584 |
| 3a6-9a8678 |             |           |            |                       | 2b67c6a6       |
| 8fb5ee     |             |           |            |                       |                |
| bce04897-a | None        | None      |            | cb6894d3-846b-4135-8c | cb6894d3-846b- |
| 9b2-4b80-8 |             |           |            | c6-25842b67c6a6       | 4135-8cc6-2584 |
| 709-6fbcbf |             |           |            |                       | 2b67c6a6       |
| 459ef7     |             |           |            |                       |                |
| faf40532   | icmp        | 0.0.0.0/0 |            | None                  | cb6894d3-846b- |
| -ceea-     |             |           |            |                       | 4135-8cc6-2584 |
| 41ad-a5fb- |             |           |            |                       | 2b67c6a6       |
| 11b857c022 |             |           |            |                       |                |
| ce         |             |           |            |                       |                |
| fba7a2cb-  | None        | None      |            | cb6894d3-846b-4135-8c | cb6894d3-846b- |
| 03fa-4c11  |             |           |            | c6-25842b67c6a6       | 4135-8cc6-2584 |
| -aadd-ebab |             |           |            |                       | 2b67c6a6       |
| 85838be9   |             |           |            |                       |                |
| fe1ae047   | None        | None      |            | None                  | cb6894d3-846b- |
| -9bdd-43b1 |             |           |            |                       | 4135-8cc6-2584 |
| -b6bd-62fa |             |           |            |                       | 2b67c6a6       |
| 17442d87   |             |           |            |                       |                |
+------------+-------------+-----------+------------+-----------------------+----------------+
[10] 仮想マシンインスタンスに割りあてたフローティングIPあてに SSH 接続することで、インスタンスにログインできます。
root@dlp ~(keystone)#
ssh ubuntu@10.0.0.205

The authenticity of host '10.0.0.205 (10.0.0.205)' can't be established.
ECDSA key fingerprint is SHA256:hb0tkx8NUhkoyhBHfEEY2Hs0L+wXHRwfE953hgK0CpQ.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.0.0.205' (ECDSA) to the list of known hosts.
ubuntu@10.0.0.205's password:
Welcome to Ubuntu 16.04.2 LTS (GNU/Linux 4.4.0-66-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage
Last login: Wed Mar 15 09:46:46 2017
ubuntu@ubuntu:~$    
# ログインできた
 
Tweet