OpenStack Liberty : Neutron ネットワーク構成(GRE)2015/11/15 |
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OpenStack Network Service（Neutron）による仮想ネットワークの構成です。
想定する構成は 以下のように VLAN タイプのネットワーク構成例と同様の構成で設定します。ここでは 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 ] | | +-----------------+
+-----| 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 = gre
# 83行目あたりに追記 [ml2_type_gre] tunnel_id_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-ext # 追加したブリッジのポートにeth1を追加 [root@network ~]# ovs-vsctl add-port br-ext eth1
[root@network ~]#
vi /etc/neutron/l3_agent.ini # 69行目：追記 external_network_bridge = br-ext
[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 = gre
# 83行目あたりに追記 [ml2_type_gre] tunnel_id_ranges = 1:1000
[root@network ~]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 2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
enable_tunneling = True bridge_mappings = external:br-ext # 89行目あたりに追記 [agent] tunnel_types = gre
systemctl restart neutron-l3-agent neutron-openvswitch-agent |
| [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 # 8行目あたり： tenant_network_types に値を追記 tenant_network_types = gre
# 83行目あたりに追記 [ml2_type_gre] tunnel_id_ranges = 1:1000
[root@node01 ~]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 2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
enable_tunneling = True # 88行目あたりに追記 [agent] tunnel_types = gre
systemctl restart neutron-openvswitch-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 | 8c37760a-4b8e-4c9e-8d53-3158e44e1c19 | | name | router01 | | routes | | | status | ACTIVE | | tenant_id | d625e02b3d394afbad250def2f88fefa | +-----------------------+--------------------------------------+[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 Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | id | 0940cbc6-aa15-483a-ac36-4df923c750a0 | | mtu | 0 | | name | int_net | | provider:network_type | gre | | provider:physical_network | | | provider:segmentation_id | 15 | | router:external | False | | shared | False | | status | ACTIVE | | subnets | | | tenant_id | d625e02b3d394afbad250def2f88fefa | +---------------------------+--------------------------------------+ # 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 | 772fcfea-1660-45ef-8241-2905bd107d40 |
| ip_version | 4 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | |
| network_id | 0940cbc6-aa15-483a-ac36-4df923c750a0 |
| subnetpool_id | |
| tenant_id | d625e02b3d394afbad250def2f88fefa |
+-------------------+------------------------------------------------------+
[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 c28ca272-18a1-4af5-9cf2-de321df8b724 to router 8c37760a-4b8e-4c9e-8d53-3158e44e1c19. |
| [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 Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | id | 5ce8e2d6-06a5-48e2-8465-2f642ad85e0f | | mtu | 0 | | name | ext_net | | provider:network_type | gre | | provider:physical_network | | | provider:segmentation_id | 71 | | router:external | True | | shared | False | | status | ACTIVE | | subnets | | | tenant_id | d625e02b3d394afbad250def2f88fefa | +---------------------------+--------------------------------------+ # 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 | 9c42866c-1157-45dd-afc0-73454388533c |
| ip_version | 4 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | |
| network_id | 5ce8e2d6-06a5-48e2-8465-2f642ad85e0f |
| subnetpool_id | |
| tenant_id | d625e02b3d394afbad250def2f88fefa |
+-------------------+----------------------------------------------+
[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 8c37760a-4b8e-4c9e-8d53-3158e44e1c19 |
| [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 $2 }'` nova image-list +--------------------------------------+---------+--------+--------+ | ID | Name | Status | Server | +--------------------------------------+---------+--------+--------+ | 34beed31-2971-43f0-9c5a-d39d3df1d501 | CentOS7 | ACTIVE | | +--------------------------------------+---------+--------+--------+[root@dlp ~(keystone)]# nova boot --flavor 2 --image CentOS7 --security_group default --nic net-id=$Int_Net_ID CentOS_7 [root@dlp ~(keystone)]# nova list +-----------+----------+--------+------------+-------------+-----------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+----------+--------+------------+-------------+-----------------------+ | 028bf570- | CentOS_7 | 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 | 5ce8e2d6-06a5-48e2-8465-2f642ad85e0f | | id | de3f08e1-05a9-4571-9154-20a37f192f2e | | port_id | | | router_id | | | status | DOWN | | tenant_id | d625e02b3d394afbad250def2f88fefa | +---------------------+--------------------------------------+
[root@dlp ~(keystone)]#
Device_ID=`nova list | grep CentOS_7 | 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 de3f08e1-05a9-4571-9154-20a37f192f2e # 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 | 5ce8e2d6-06a5-48e2-8465-2f642ad85e0f | | id | de3f08e1-05a9-4571-9154-20a37f192f2e | | port_id | 01d9c16e-983f-4148-9990-3bec994519cd | | router_id | 8c37760a-4b8e-4c9e-8d53-3158e44e1c19 | | status | ACTIVE | | tenant_id | d625e02b3d394afbad250def2f88fefa | +---------------------+--------------------------------------+ |
| [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 | 03d76de0-7d74-45b1-b19a-174a4c6a04a2 | | port_range_max | | | port_range_min | | | protocol | icmp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 26defc29-1ab4-48ce-a842-f79dd30f2bd5 | | tenant_id | d625e02b3d394afbad250def2f88fefa | +-------------------+--------------------------------------+ # 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 | ab2df1cf-c052-4ddc-9a06-2a0119ad74ec | | port_range_max | 22 | | port_range_min | 22 | | protocol | tcp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 26defc29-1ab4-48ce-a842-f79dd30f2bd5 | | tenant_id | d625e02b3d394afbad250def2f88fefa | +-------------------+--------------------------------------+[root@dlp ~(keystone)]# neutron security-group-rule-list +----------------+----------------+-----------+-----------+---------------+-----------------+ | id | security_group | direction | ethertype | protocol/port | remote | +----------------+----------------+-----------+-----------+---------------+-----------------+ | 03d76de0-7d74- | default | ingress | IPv4 | icmp | any | | 66bf77aa-1594- | default | egress | IPv6 | any | any | | 8d508297-6157- | default | ingress | IPv6 | any | default (group) | | ab2df1cf-c052- | default | ingress | IPv4 | 22/tcp | any | | c5c0c9ef-0949- | default | ingress | IPv4 | any | default (group) | | d4145098-f6d2- | 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 10.0.0.201 The authenticity of host '10.0.0.201 (10.0.0.201)' can't be established. ECDSA key fingerprint is 03:3d:a6:2c:21:0d:03:cc:de:29:d1:c0:3b:4d:4c:e7. 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. root@10.0.0.201's password: Last login: Sat Nov 14 21:10:58 2015 [root@host-192-168-100-3 ~]# # ログインできた
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