OpenStack Mitaka (三鷹) : Neutron ネットワーク構成(VXLAN)2016/05/30 |
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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 # 101行目： tenant_network_types に値を追記 tenant_network_types = vxlan
# 152行目：追記 [ml2_type_flat]
flat_networks = physnet1
# 206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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root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # 101行目： tenant_network_types に値を追記 tenant_network_types = vxlan
# 152行目：追記 [ml2_type_flat]
flat_networks = physnet1
# 206行目：追記 [ml2_type_vxlan]
vni_ranges = 1:1000
root@network:~#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini # 128行目：追記 [linux_bridge]
physical_interface_mappings = physnet1:eth1
# 171行目あたり：変更 & 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 # 100行目：追記 [agent]
prevent_arp_spoofing = True
root@network:~#
vi /etc/neutron/dhcp_agent.ini # 81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
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。 |
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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 # 101行目： tenant_network_types に値を追記 tenant_network_types = vxlan
# 152行目：追記 [ml2_type_flat]
flat_networks = physnet1
# 206行目：追記 [ml2_type_vxlan]
vni_ranges = 1:1000
root@node01:~#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini # 128行目：追記 [linux_bridge]
physical_interface_mappings = physnet1:eth1
# 171行目：変更 & 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 # 100行目：追記 [agent]
prevent_arp_spoofing = True
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。 |
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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 | | availability_zone_hints | | | availability_zones | | | description | | | distributed | False | | external_gateway_info | | | ha | False | | id | 70a2c69f-6a5c-42f6-b46a-33ac9f0b81bf | | name | router01 | | routes | | | status | ACTIVE | | tenant_id | 61bb62a97e394b8db8f95aa05a678771 | +-------------------------+--------------------------------------+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)# neutron net-create int_net --provider:network_type vxlan Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | availability_zone_hints | | | availability_zones | | | created_at | 2016-05-31T11:03:26 | | description | | | id | b8f55572-e940-4d48-ac34-08a842982a33 | | ipv4_address_scope | | | ipv6_address_scope | | | mtu | 1450 | | name | int_net | | port_security_enabled | True | | provider:network_type | vxlan | | provider:physical_network | | | provider:segmentation_id | 78 | | router:external | False | | shared | False | | status | ACTIVE | | subnets | | | tags | | | tenant_id | 61bb62a97e394b8db8f95aa05a678771 | | updated_at | 2016-05-31T11:03:26 | +---------------------------+--------------------------------------+ # 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 |
| created_at | 2016-05-31T11:04:16 |
| description | |
| dns_nameservers | 10.0.0.1 |
| enable_dhcp | True |
| gateway_ip | 192.168.100.1 |
| host_routes | |
| id | 86305acd-a037-4050-804c-34f6f0d8d1ee |
| ip_version | 4 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | |
| network_id | b8f55572-e940-4d48-ac34-08a842982a33 |
| subnetpool_id | |
| tenant_id | 61bb62a97e394b8db8f95aa05a678771 |
| updated_at | 2016-05-31T11:04:16 |
+-------------------+------------------------------------------------------+
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 230ac899-054c-4b53-893e-432968685874 to router 70a2c69f-6a5c-42f6-b46a-33ac9f0b81bf. |
| [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 | | availability_zone_hints | | | availability_zones | | | created_at | 2016-05-31T11:04:58 | | description | | | id | c106a185-c9d9-45b2-93f7-c124c080da97 | | ipv4_address_scope | | | ipv6_address_scope | | | is_default | False | | mtu | 1500 | | 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 | | | tags | | | tenant_id | 61bb62a97e394b8db8f95aa05a678771 | | updated_at | 2016-05-31T11:04:59 | +---------------------------+--------------------------------------+ # 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 |
| created_at | 2016-05-31T11:05:17 |
| description | |
| dns_nameservers | 10.0.0.1 |
| enable_dhcp | False |
| gateway_ip | 10.0.0.1 |
| host_routes | |
| id | f9da6488-df9c-4f40-8998-304a5632a0a9 |
| ip_version | 4 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | |
| network_id | c106a185-c9d9-45b2-93f7-c124c080da97 |
| subnetpool_id | |
| tenant_id | 61bb62a97e394b8db8f95aa05a678771 |
| updated_at | 2016-05-31T11:05:17 |
+-------------------+----------------------------------------------+
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 70a2c69f-6a5c-42f6-b46a-33ac9f0b81bf |
| [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 $2 }'` nova image-list +--------------------------------------+------------+--------+--------+ | ID | Name | Status | Server | +--------------------------------------+------------+--------+--------+ | d7e743c4-c1f5-458b-abc5-2d9176c07a93 | Ubuntu1604 | ACTIVE | | +--------------------------------------+------------+--------+--------+root@dlp ~(keystone)# nova boot --flavor 2 --image Ubuntu1604 --security-groups default --nic net-id=$Int_Net_ID Ubuntu_1604 root@dlp ~(keystone)# nova list +--------------------------------------+-------------+--------+------------+-------------+-----------------------+ | ID | Name | Status | Task State | Power State | Networks | +--------------------------------------+-------------+--------+------------+-------------+-----------------------+ | 8baaabf3-d89e-4cc2-adf8-70420b425c84 | Ubuntu_1604 | 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 | +---------------------+--------------------------------------+ | description | | | dns_domain | | | dns_name | | | fixed_ip_address | | | floating_ip_address | 10.0.0.201 | | floating_network_id | c106a185-c9d9-45b2-93f7-c124c080da97 | | id | 2af3610a-ad49-4cdf-ac41-d1bd0e57916b | | port_id | | | router_id | | | status | DOWN | | tenant_id | 61bb62a97e394b8db8f95aa05a678771 | +---------------------+--------------------------------------+
root@dlp ~(keystone)#
Device_ID=`nova list | grep Ubuntu_1604 | 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 2af3610a-ad49-4cdf-ac41-d1bd0e57916b # 設定確認 root@dlp ~(keystone)# neutron floatingip-show $Floating_ID +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | description | | | dns_domain | | | dns_name | | | fixed_ip_address | 192.168.100.3 | | floating_ip_address | 10.0.0.201 | | floating_network_id | c106a185-c9d9-45b2-93f7-c124c080da97 | | id | 2af3610a-ad49-4cdf-ac41-d1bd0e57916b | | port_id | a0043817-b893-49d6-83ab-8ed60700117d | | router_id | 70a2c69f-6a5c-42f6-b46a-33ac9f0b81bf | | status | DOWN | | tenant_id | 61bb62a97e394b8db8f95aa05a678771 | +---------------------+--------------------------------------+ |
| [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 | +-------------------+--------------------------------------+ | description | | | direction | ingress | | ethertype | IPv4 | | id | 67699149-a85e-4334-91cc-48865147b7fd | | port_range_max | | | port_range_min | | | protocol | icmp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 04d72bc2-a73e-4803-b93a-0e22e69bae9f | | tenant_id | 61bb62a97e394b8db8f95aa05a678771 | +-------------------+--------------------------------------+ # 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 | +-------------------+--------------------------------------+ | description | | | direction | ingress | | ethertype | IPv4 | | id | 492eb253-3314-420a-98ee-3d652aecbe86 | | port_range_max | 22 | | port_range_min | 22 | | protocol | tcp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 04d72bc2-a73e-4803-b93a-0e22e69bae9f | | tenant_id | 61bb62a97e394b8db8f95aa05a678771 | +-------------------+--------------------------------------+root@dlp ~(keystone)# neutron security-group-rule-list +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | id | security_group | direction | ethertype | port/protocol | remote | +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | 492eb253-3314-420a-98ee-3d652aecbe86 | default | ingress | IPv4 | 22/tcp | any | | 67699149-a85e-4334-91cc-48865147b7fd | default | ingress | IPv4 | icmp | any | | 6976acfc-c439-44f1-b8a1-be9b917ebef2 | default | ingress | IPv4 | any | default (group) | | 710640ac-f8ac-4d29-b708-861476758f83 | default | ingress | IPv6 | any | default (group) | | 7ab15e66-e89b-4c72-b7b9-a7a216d14a81 | default | egress | IPv4 | any | any | | 825efe36-22a0-4037-9cb9-3622b798fea0 | default | egress | IPv6 | 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 xerus@10.0.0.201
The authenticity of host '10.0.0.201 (10.0.0.201)' can't be established.
ECDSA key fingerprint is SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
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.
xerus@10.0.0.201's password:
Welcome to Ubuntu 16.04 LTS (GNU/Linux 4.4.0-22-generic x86_64)
* Documentation: https://help.ubuntu.com/
0 packages can be updated.
0 updates are security updates.
The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.
xerus@ubuntu:~$ # ログインできた
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