OpenStack Ocata : Neutron ネットワークを構成する (VXLAN)2017/02/28 |
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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 |eth1 | Libvirt |
| Memcached httpd | | L2,L3,Metadata Agent +---- | Nova Compute |
| Keystone Glance | | | | Open vSwitch |
| Nova API | | | | L2 Agent |
| Neutron Server | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
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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
# 248行目：変更 firewall_driver = iptables_hybrid
[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 # 195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 |
| [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
# 248行目：変更 firewall_driver = iptables_hybrid
[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 # 195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 |
| [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 | 2017-03-04T13:49:15Z | | description | | | distributed | False | | external_gateway_info | None | | flavor_id | None | | ha | False | | id | 82ec16e7-19c0-4e2f-afd9-afeeaf1de0d2 | | name | router01 | | project_id | c654e2e098b14356b97b6e613775cc54 | | revision_number | None | | routes | | | status | ACTIVE | | updated_at | 2017-03-04T13:49:15Z | +-------------------------+--------------------------------------+ |
| [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 | 2017-03-04T13:50:37Z | | description | | | dns_domain | None | | id | eab3a11e-930b-4eb6-a87d-9512ed460bed | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | None | | mtu | 1450 | | name | int_net | | port_security_enabled | True | | project_id | c654e2e098b14356b97b6e613775cc54 | | provider:network_type | vxlan | | provider:physical_network | None | | provider:segmentation_id | 32 | | qos_policy_id | None | | revision_number | 3 | | router:external | Internal | | segments | None | | shared | False | | status | ACTIVE | | subnets | | | updated_at | 2017-03-04T13:50:37Z | +---------------------------+--------------------------------------+ # 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 | 2017-03-04T13:51:11Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | True | | gateway_ip | 192.168.100.1 | | host_routes | | | id | 4e93c50e-c147-4fa5-8916-f794ed262689 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet1 | | network_id | eab3a11e-930b-4eb6-a87d-9512ed460bed | | project_id | c654e2e098b14356b97b6e613775cc54 | | revision_number | 2 | | segment_id | None | | service_types | | | subnetpool_id | None | | updated_at | 2017-03-04T13:51:11Z | +-------------------+--------------------------------------+ # 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 | 2017-03-04T13:53:53Z | | description | | | dns_domain | None | | id | 0eb12bc2-4375-4cf0-bedb-e8cae969976e | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | False | | mtu | 1500 | | name | ext_net | | port_security_enabled | True | | project_id | c654e2e098b14356b97b6e613775cc54 | | 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 | 2017-03-04T13:53:53Z | +---------------------------+--------------------------------------+ # 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 | 2017-03-04T13:55:15Z | | description | | | dns_nameservers | 10.0.0.10 | | enable_dhcp | False | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 26cd73d2-d2a4-4d6b-a527-1ec58ebbdac4 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | subnet2 | | network_id | 0eb12bc2-4375-4cf0-bedb-e8cae969976e | | project_id | c654e2e098b14356b97b6e613775cc54 | | revision_number | 2 | | segment_id | None | | service_types | | | subnetpool_id | None | | updated_at | 2017-03-04T13:55:15Z | +-------------------+--------------------------------------+ # 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 $2 }'` openstack image list +--------------------------------------+---------+--------+ | ID | Name | Status | +--------------------------------------+---------+--------+ | c13b45a8-5664-4169-93c7-625ae2e561e9 | CentOS7 | active | +--------------------------------------+---------+--------+[root@dlp ~(keystone)]# openstack server create --flavor m1.small --image CentOS7 --security-group default --nic net-id=$Int_Net_ID CentOS_7 [root@dlp ~(keystone)]# openstack server list +-----------+----------+--------+-----------------------+------------+ | ID | Name | Status | Networks | Image Name | +-----------+----------+--------+-----------------------+------------+ | e45e43eb- | CentOS_7 | ACTIVE | int_net=192.168.100.9 | CentOS7 | +-----------+----------+--------+-----------------------+------------+ |
| [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 | 2017-03-04T14:01:13Z | | description | | | fixed_ip_address | None | | floating_ip_address | 10.0.0.210 | | floating_network_id | 0eb12bc2-4375-4cf0-bedb-e8cae969976e | | id | 8b8efd26-01cc-426b-bb7c-35e6b2a389a4 | | name | None | | port_id | None | | project_id | c654e2e098b14356b97b6e613775cc54 | | revision_number | 1 | | router_id | None | | status | DOWN | | updated_at | 2017-03-04T14:01:13Z | +---------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack server add floating ip CentOS_7 10.0.0.210 # 設定確認 [root@dlp ~(keystone)]# openstack floating ip show 10.0.0.210 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2017-03-04T14:01:13Z | | description | | | fixed_ip_address | 192.168.100.9 | | floating_ip_address | 10.0.0.210 | | floating_network_id | 0eb12bc2-4375-4cf0-bedb-e8cae969976e | | id | 8b8efd26-01cc-426b-bb7c-35e6b2a389a4 | | name | None | | port_id | 2cea5e35-38cd-4ca9-92f8-10c5427ba544 | | project_id | c654e2e098b14356b97b6e613775cc54 | | revision_number | 2 | | router_id | 82ec16e7-19c0-4e2f-afd9-afeeaf1de0d2 | | status | ACTIVE | | updated_at | 2017-03-04T14:01:33Z | +---------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack server list +-----------+----------+--------+-----------------------------------+------------+ | ID | Name | Status | Networks | Image Name | +-----------+----------+--------+-----------------------------------+------------+ | e45e43eb- | CentOS_7 | ACTIVE | int_net=192.168.100.9, 10.0.0.210 | CentOS7 | +-----------+----------+--------+-----------------------------------+------------+ |
| [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 | 2017-02-28T07:54:12Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 180e4ec7-9221-42fb-bdba-382c5a06a8f4 | | name | None | | port_range_max | None | | port_range_min | None | | project_id | c654e2e098b14356b97b6e613775cc54 | | protocol | icmp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 1 | | security_group_id | 160e1d9e-72b9-4ed3-a434-276518f22a7b | | updated_at | 2017-02-28T07:54:12Z | +-------------------+--------------------------------------+ # SSH 許可 [root@dlp ~(keystone)]# openstack security group rule create --protocol tcp --dst-port 22:22 default +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | created_at | 2017-02-28T07:55:14Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 93a858de-87b5-4544-8d23-ef4f24da5f3b | | name | None | | port_range_max | 22 | | port_range_min | 22 | | project_id | c654e2e098b14356b97b6e613775cc54 | | protocol | tcp | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 1 | | security_group_id | 160e1d9e-72b9-4ed3-a434-276518f22a7b | | updated_at | 2017-02-28T07:55:14Z | +-------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack security group rule list +-------------------+-------------+-----------+------------+--------------------------------------+--------------+ | ID | IP Protocol | IP Range | Port Range | Remote Security Group | Security Gro | +-------------------+-------------+-----------+------------+--------------------------------------+--------------+ | 180e4ec7-9221-... | icmp | 0.0.0.0/0 | | None | 160e1d9e-... | | 29b38eb3-2004-... | None | None | | 160e1d9e-72b9-4ed3-a434-276518f22a7b | 160e1d9e-... | | 93a858de-87b5-... | tcp | 0.0.0.0/0 | 22:22 | None | 160e1d9e-... | | 9f86c90e-6357-... | None | None | | None | 160e1d9e-... | | a1feacc0-c8ea-... | None | None | | None | 160e1d9e-... | | f46d96c3-235a-... | None | None | | 160e1d9e-72b9-4ed3-a434-276518f22a7b | 160e1d9e-... | +-------------------+-------------+-----------+------------+--------------------------------------+--------------+ |
| [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 Name | +-----------+----------+--------+-----------------------------------+------------+ | e45e43eb- | CentOS_7 | ACTIVE | int_net=192.168.100.9, 10.0.0.210 | CentOS7 | +-----------+----------+--------+-----------------------------------+------------+[root@dlp ~(keystone)]# ssh 10.0.0.210
The authenticity of host '10.0.0.195 (10.0.0.210)' can't be established.
ECDSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.0.0.210' (ECDSA) to the list of known hosts.
root@10.0.0.210's password:
Last login: Wed Mar 1 16:30:10 2017
[root@host-192-168-100-9 ~]# # ログインできた
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