OpenStack Liberty : Neutron ネットワーク構成(VXLAN)2015/12/27 |
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OpenStack Network Service（Neutron）による仮想ネットワークの構成です。
また、Network ノードと Compute ノードはネットワークインターフェースを二つ持っていることを前提とします。
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+-------------+ +----+----+
| Name Server | | Gateway |
+------+------+ +----+----+
|10.0.0.10 |10.0.0.1
| |
+------------+-----------------+------------------------+
| | | |
| | | 10.0.0.200-10.0.0.254
eth0|10.0.0.30 | 10.0.0.50| eth0 +--------+-------+
+--------+---------+ | +-----------+----------+ | Virtual Router |
| [ Control Node ] | | | [ Network Node ] | +--------+-------+
| Keystone | | | DHCP Agent | 192.168.100.1
| Glance | | | L3 Agent |eth1 | 192.168.100.0/24
| Nova API | | | L2 Agent | | +-----------------+
| Neutron Server | | | Metadata Agent | | +---| Virtual Machine |
+------------------+ | +----------------------+ | | +-----------------+
| | | +-----------------+
| +----------------------+ +-------+---| Virtual Machine |
| eth0| [ Compute Node ] |eth1 | +-----------------+
+-----| Nova Compute | | +-----------------+
10.0.0.51| L2 Agent | |---| Virtual Machine |
+----------------------+ | +-----------------+
| +-----------------+
+---| Virtual Machine |
+-----------------+
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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 # 8行目あたり： tenant_network_types に値を追記 tenant_network_types = vxlan
# 66行目あたり：追記 [ml2_type_flat]
flat_networks = physnet1
# 89行目あたり：追記 [ml2_type_vxlan]
vni_ranges = 1:1000
initctl 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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root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # 8行目あたり： tenant_network_types に値を追記 tenant_network_types = vxlan
# 66行目あたり：追記 [ml2_type_flat]
flat_networks = physnet1
# 89行目あたり：追記 [ml2_type_vxlan]
vni_ranges = 1:1000
root@network:~#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini # 2行目：追記 [linux_bridge]
physical_interface_mappings = vlan:eth0,physnet1:eth1
# 14行目あたり：追記 (local_ip は物理インターフェースのIPを指定) [vxlan]
enable_vxlan = True
local_ip = 10.0.0.50 l2_population = True # 48行目あたり：追記 [agent]
prevent_arp_spoofing = True
root@network:~#
vi /etc/neutron/dhcp_agent.ini # 75行目あたり：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
for service in l3-agent dhcp-agent metadata-agent plugin-linuxbridge-agent; do initctl restart neutron-$service done |
| [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:~# 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 # 8行目あたり： tenant_network_types に値を追記 tenant_network_types = vxlan
# 66行目あたり：追記 [ml2_type_flat]
flat_networks = physnet1
# 89行目あたり：追記 [ml2_type_vxlan]
vni_ranges = 1:1000
root@node01:~#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini # 2行目：追記 [linux_bridge]
physical_interface_mappings = vlan:eth0
# 14行目あたり：追記 (local_ip は物理インターフェースのIPを指定) [vxlan]
enable_vxlan = True
local_ip = 10.0.0.51 l2_population = True # 48行目あたり：追記 [agent]
prevent_arp_spoofing = True
initctl restart neutron-plugin-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。 |
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# 仮想ルーター作成 root@dlp ~(keystone)# neutron router-create router01 Created a new router: +-----------------------+--------------------------------------+ | Field | Value | +-----------------------+--------------------------------------+ | admin_state_up | True | | distributed | False | | external_gateway_info | | | ha | False | | id | 267273d2-2509-4824-96e9-6ed879896abb | | name | router01 | | routes | | | status | ACTIVE | | tenant_id | fa7d34414b8c45c4a2fdc29403fb5cd2 | +-----------------------+--------------------------------------+root@dlp ~(keystone)# Router_ID=`neutron router-list | grep router01 | awk '{ print $2 }'` |
| [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)# tenantID=`openstack project list | grep service | awk '{print $2}'` root@dlp ~(keystone)# neutron net-create int_net --tenant-id $tenantID --provider:network_type vxlan Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | id | c352c783-37d5-40c4-8e50-0d0d6e44fa21 | | mtu | 0 | | name | int_net | | port_security_enabled | True | | provider:network_type | vxlan | | provider:physical_network | | | provider:segmentation_id | 16 | | router:external | False | | shared | False | | status | ACTIVE | | subnets | | | tenant_id | ba3f5997c2474c13b36e6f6bc47a264c | +---------------------------+--------------------------------------+ # 内部用ネットワークにサブネット作成 root@dlp ~(keystone)# neutron subnet-create \ --gateway 192.168.100.1 --dns-nameserver 10.0.0.1 int_net 192.168.100.0/24 Created a new subnet:
+-------------------+------------------------------------------------------+
| Field | Value |
+-------------------+------------------------------------------------------+
| allocation_pools | {"start": "192.168.100.2", "end": "192.168.100.254"} |
| cidr | 192.168.100.0/24 |
| dns_nameservers | 10.0.0.1 |
| enable_dhcp | True |
| gateway_ip | 192.168.100.1 |
| host_routes | |
| id | 7e3e5878-b69b-427c-b24d-ac9cbdf284ce |
| ip_version | 4 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | |
| network_id | c352c783-37d5-40c4-8e50-0d0d6e44fa21 |
| subnetpool_id | |
| tenant_id | fa7d34414b8c45c4a2fdc29403fb5cd2 |
+-------------------+------------------------------------------------------+
root@dlp ~(keystone)#
Int_Subnet_ID=`neutron net-list | grep int_net | awk '{ print $6 }'`
# 仮想ルーターに内部ネットワークを設定 root@dlp ~(keystone)# neutron router-interface-add $Router_ID $Int_Subnet_ID Added interface 4c2fba63-b262-45ec-8043-11033446f5fa to router 267273d2-2509-4824-96e9-6ed879896abb. |
| [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)# neutron net-create ext_net --router:external True --provider:physical_network physnet1 --provider:network_type flat Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | id | f1c05750-2dbe-4e9e-9b56-ca4107f54160 | | mtu | 0 | | name | ext_net | | port_security_enabled | True | | provider:network_type | flat | | provider:physical_network | physnet1 | | provider:segmentation_id | | | router:external | True | | shared | False | | status | ACTIVE | | subnets | | | tenant_id | fa7d34414b8c45c4a2fdc29403fb5cd2 | +---------------------------+--------------------------------------+ # 外部用ネットワークにサブネット作成 root@dlp ~(keystone)# neutron subnet-create ext_net \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.1 10.0.0.0/24 --disable-dhcp Created a new subnet:
+-------------------+----------------------------------------------+
| Field | Value |
+-------------------+----------------------------------------------+
| allocation_pools | {"start": "10.0.0.200", "end": "10.0.0.254"} |
| cidr | 10.0.0.0/24 |
| dns_nameservers | 10.0.0.1 |
| enable_dhcp | False |
| gateway_ip | 10.0.0.1 |
| host_routes | |
| id | 30dee5b0-0504-4575-be0e-455ac25a68d4 |
| ip_version | 4 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | |
| network_id | f1c05750-2dbe-4e9e-9b56-ca4107f54160 |
| subnetpool_id | |
| tenant_id | fa7d34414b8c45c4a2fdc29403fb5cd2 |
+-------------------+----------------------------------------------+
root@dlp ~(keystone)#
Ext_Net_ID=`neutron net-list | grep ext_net | awk '{ print $2 }'` # 仮想ルーターにゲートウェイを設定 root@dlp ~(keystone)# neutron router-gateway-set $Router_ID $Ext_Net_ID Set gateway for router 267273d2-2509-4824-96e9-6ed879896abb |
| [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=`neutron net-list | grep int_net | awk '{ print $2 }'` nova image-list +--------------------------------------+------------+--------+--------+ | ID | Name | Status | Server | +--------------------------------------+------------+--------+--------+ | f29a589b-595a-4f0c-bbce-f6f3537f2a7c | Ubuntu1404 | ACTIVE | | +--------------------------------------+------------+--------+--------+root@dlp ~(keystone)# nova boot --flavor 2 --image Ubuntu1404 --security_group default --nic net-id=$Int_Net_ID Ubuntu_1404 root@dlp ~(keystone)# nova list +-----------+-------------+--------+------------+-------------+-----------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+-------------+--------+------------+-------------+-----------------------+ | a25ba5e7- | Ubuntu_1404 | ACTIVE | - | Running | int_net=192.168.100.3 | +-----------+-------------+--------+------------+-------------+-----------------------+ |
| [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)# neutron floatingip-create ext_net Created a new floatingip: +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | fixed_ip_address | | | floating_ip_address | 10.0.0.201 | | floating_network_id | f1c05750-2dbe-4e9e-9b56-ca4107f54160 | | id | 8b3abead-1695-4f11-8e62-3f18d160a776 | | port_id | | | router_id | | | status | DOWN | | tenant_id | fa7d34414b8c45c4a2fdc29403fb5cd2 | +---------------------+--------------------------------------+
root@dlp ~(keystone)#
Device_ID=`nova list | grep Ubuntu_1404 | awk '{ print $2 }'` root@dlp ~(keystone)# Port_ID=`neutron port-list -- --device_id $Device_ID | grep 192.168.100.3 | awk '{ print $2 }'` root@dlp ~(keystone)# Floating_ID=`neutron floatingip-list | grep 10.0.0.201 | awk '{ print $2 }'`
root@dlp ~(keystone)#
neutron floatingip-associate $Floating_ID $Port_ID Associated floating IP 8b3abead-1695-4f11-8e62-3f18d160a776 # 設定確認 root@dlp ~(keystone)# neutron floatingip-show $Floating_ID +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | fixed_ip_address | 192.168.100.3 | | floating_ip_address | 10.0.0.201 | | floating_network_id | f1c05750-2dbe-4e9e-9b56-ca4107f54160 | | id | 8b3abead-1695-4f11-8e62-3f18d160a776 | | port_id | a80f5a55-3956-4f0a-9fa8-43ea5521c968 | | router_id | 267273d2-2509-4824-96e9-6ed879896abb | | status | ACTIVE | | tenant_id | fa7d34414b8c45c4a2fdc29403fb5cd2 | +---------------------+--------------------------------------+ |
| [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)# neutron security-group-rule-create --direction ingress --protocol icmp default Created a new security_group_rule: +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | direction | ingress | | ethertype | IPv4 | | id | eb5f5557-397b-4662-aa28-a85e67a6d5c1 | | port_range_max | | | port_range_min | | | protocol | icmp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 29cb0389-e33a-4e65-9db5-6e3e18901a07 | | tenant_id | fa7d34414b8c45c4a2fdc29403fb5cd2 | +-------------------+--------------------------------------+ # SSH 許可 root@dlp ~(keystone)# neutron security-group-rule-create --direction ingress --protocol tcp --port_range_min 22 --port_range_max 22 default Created a new security_group_rule: +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | direction | ingress | | ethertype | IPv4 | | id | 96c37376-3cd2-4499-abb0-cb6efc0702fd | | port_range_max | 22 | | port_range_min | 22 | | protocol | tcp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 29cb0389-e33a-4e65-9db5-6e3e18901a07 | | tenant_id | fa7d34414b8c45c4a2fdc29403fb5cd2 | +-------------------+--------------------------------------+root@dlp ~(keystone)# neutron security-group-rule-list +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | id | security_group | direction | ethertype | protocol/port | remote | +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | 67c6be2e-640f-4c3b-9b46-367366c0afeb | default | ingress | IPv4 | any | default (group) | | 96c37376-3cd2-4499-abb0-cb6efc0702fd | default | ingress | IPv4 | 22/tcp | any | | a3779b4e-2042-4264-b8d0-3d3ffb5c6fec | default | ingress | IPv6 | any | default (group) | | d8566bc8-46ac-4118-adca-2dd0b3d61893 | default | egress | IPv6 | any | any | | eb5f5557-397b-4662-aa28-a85e67a6d5c1 | default | ingress | IPv4 | icmp | any | | ee3585ff-23fb-42db-baa7-c3271bdd8c77 | default | egress | IPv4 | any | any | +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ |
| [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。 |
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root@dlp ~(keystone)# ssh trusty@10.0.0.201 trusty@10.0.0.201's password: Welcome to Ubuntu 14.04.3 LTS (GNU/Linux 3.13.0-74-generic x86_64) * Documentation: https://help.ubuntu.com/ 0 packages can be updated. 0 updates are security updates. Last login: Mon Dec 28 22:43:11 2015trusty@ubuntu:~$ # ログインできた
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