OpenStack Icehouse : ネットワーク構成#22014/06/25 |
OpenStack Network Service(Neutron)による仮想ネットワークの構成です。
また、ここでは、Network ノードが三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。さらに、Compute ノードは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。 | +-------------+ +----+----+ | 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 | | eth2| 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 | +-----------------+ |
[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 # 36行目あたりに追記 [ml2_type_vlan] network_vlan_ranges = physnet1:1000:2999
# 最終行に追記
[ovs]
tenant_network_type = vlan bridge_mappings = physnet1:br-eth1 /etc/rc.d/init.d/neutron-server restart Stopping neutron: [ OK ] Starting neutron: [ OK ] |
[2] | Network ノード、および、Compute ノードの両方で以下のように設定変更します。 |
[root@network ~]# ovs-vsctl add-br br-eth1 # ブリッジ追加 [root@network ~]# ovs-vsctl add-port br-eth1 eth1 # 追加したブリッジのポートにeth1を追加
[root@network ~]#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # 36行目あたりに追記 [ml2_type_vlan] network_vlan_ranges = physnet1:1000:2999
# 最終行に追記
[ovs]
tenant_network_type = vlan bridge_mappings = physnet1:br-eth1 /etc/rc.d/init.d/neutron-openvswitch-agent restart Stopping neutron-openvswitch-agent: [ OK ] Starting neutron-openvswitch-agent: [ OK ] |
[3] | Network ノードで外部接続用のブリッジの作成と定義をしておきます。 |
[root@network ~]# ovs-vsctl add-br br-ext [root@network ~]# ovs-vsctl add-port br-ext eth2
[root@network ~]#
vi /etc/neutron/l3_agent.ini # 47行目:追記 external_network_bridge = br-ext
/etc/rc.d/init.d/neutron-l3-agent restart Stopping neutron-l3-agent: [ OK ] Starting neutron-l3-agent: [ OK ] |
[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)]# neutron router-create router01 Created a new router: +-----------------------+--------------------------------------+ | Field | Value | +-----------------------+--------------------------------------+ | admin_state_up | True | | external_gateway_info | | | id | 272a5007-2c61-4cd0-b69f-feae268a82ce | | name | router01 | | status | ACTIVE | | tenant_id | 6af6c82883db4dd399833237e64609bf | +-----------------------+--------------------------------------+[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。 |
# 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 | 58daad73-ae23-4337-ad2b-fd4f1d9b46ea | | name | int_net | | provider:network_type | vlan | | provider:physical_network | physnet1 | | provider:segmentation_id | 1000 | | shared | False | | status | ACTIVE | | subnets | | | tenant_id | 6af6c82883db4dd399833237e64609bf | +---------------------------+--------------------------------------+ # 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 10.0.0.10 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 | 10.0.0.10 | | enable_dhcp | True | | gateway_ip | 192.168.100.1 | | host_routes | | | id | a4f25d5b-4069-4f72-a8a7-b3d5dc5b6edd | | ip_version | 4 | | name | | | network_id | 58daad73-ae23-4337-ad2b-fd4f1d9b46ea | | tenant_id | 6af6c82883db4dd399833237e64609bf | +------------------+------------------------------------------------------+
[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 9f6da48a-6e63-4dd5-aa41-74a9a8b8dea6 to router 272a5007-2c61-4cd0-b69f-feae268a82ce. |
[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)]# neutron net-create ext_net --router:external=True Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | id | ac62454d-7be4-411d-946c-8ffcd59bfb39 | | name | ext_net | | provider:network_type | vlan | | provider:physical_network | physnet1 | | provider:segmentation_id | 1001 | | router:external | True | | shared | False | | status | ACTIVE | | subnets | | | tenant_id | 6af6c82883db4dd399833237e64609bf | +---------------------------+--------------------------------------+ # 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 10.0.0.10 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 | 10.0.0.10 | | enable_dhcp | False | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 12f71209-1730-41bb-84d1-7fbdd5069350 | | ip_version | 4 | | name | | | network_id | ac62454d-7be4-411d-946c-8ffcd59bfb39 | | tenant_id | 6af6c82883db4dd399833237e64609bf | +------------------+----------------------------------------------+
[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 272a5007-2c61-4cd0-b69f-feae268a82ce |
[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)]#
[root@dlp ~(keystone)]# Int_Net_ID=`neutron net-list | grep int_net | awk '{ print $2 }'` nova image-list +--------------------------------------+---------+--------+--------+ | ID | Name | Status | Server | +--------------------------------------+---------+--------+--------+ | bbbe2faf-f533-4f06-855c-ac33fb9e4209 | CentOS6 | ACTIVE | | +--------------------------------------+---------+--------+--------+[root@dlp ~(keystone)]# nova boot --flavor 2 --image CentOS6 --security_group default --nic net-id=$Int_Net_ID CentOS_66 [root@dlp ~(keystone)]# nova list +-----------+-----------+--------+------------+-------------+-----------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+-----------+--------+------------+-------------+-----------------------+ | 11be97d4- | CentOS_66 | ACTIVE | - | Running | int_net=192.168.100.2 | +-----------+-----------+--------+------------+-------------+-----------------------+ |
[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)]# neutron floatingip-create ext_net Created a new floatingip: +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | fixed_ip_address | | | floating_ip_address | 10.0.0.201 | | floating_network_id | ac62454d-7be4-411d-946c-8ffcd59bfb39 | | id | d1ef564f-507b-4552-9a3c-19403d8498e1 | | port_id | | | router_id | | | status | DOWN | | tenant_id | 6af6c82883db4dd399833237e64609bf | +---------------------+--------------------------------------+
[root@dlp ~(keystone)]#
Device_ID=`nova list | grep CentOS_66 | awk '{ print $2 }'` [root@dlp ~(keystone)]# Port_ID=`neutron port-list -- --device_id $Device_ID | grep 192.168.100.2 | 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 floatingip d1ef564f-507b-4552-9a3c-19403d8498e1 # 設定確認 [root@dlp ~(keystone)]# neutron floatingip-show $Floating_ID +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | fixed_ip_address | 192.168.100.2 | | floating_ip_address | 10.0.0.201 | | floating_network_id | ac62454d-7be4-411d-946c-8ffcd59bfb39 | | id | d1ef564f-507b-4552-9a3c-19403d8498e1 | | port_id | 8e9c0edf-fddf-4b50-b645-4a4325874285 | | router_id | 272a5007-2c61-4cd0-b69f-feae268a82ce | | status | ACTIVE | | tenant_id | 6af6c82883db4dd399833237e64609bf | +---------------------+--------------------------------------+ |
[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。 |
# SSH 許可 [root@dlp ~(keystone)]# nova secgroup-add-rule default tcp 22 22 0.0.0.0/0 +-------------+-----------+---------+-----------+--------------+ | IP Protocol | From Port | To Port | IP Range | Source Group | +-------------+-----------+---------+-----------+--------------+ | tcp | 22 | 22 | 0.0.0.0/0 | | +-------------+-----------+---------+-----------+--------------+ # ICMP 許可 [root@dlp ~(keystone)]# nova secgroup-add-rule default icmp -1 -1 0.0.0.0/0 +-------------+-----------+---------+-----------+--------------+ | IP Protocol | From Port | To Port | IP Range | Source Group | +-------------+-----------+---------+-----------+--------------+ | icmp | -1 | -1 | 0.0.0.0/0 | | +-------------+-----------+---------+-----------+--------------+[root@dlp ~(keystone)]# nova secgroup-list-rules default +-------------+-----------+---------+-----------+--------------+ | IP Protocol | From Port | To Port | IP Range | Source Group | +-------------+-----------+---------+-----------+--------------+ | tcp | 22 | 22 | 0.0.0.0/0 | | | icmp | -1 | -1 | 0.0.0.0/0 | | +-------------+-----------+---------+-----------+--------------+ |
[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 10.0.0.201 The authenticity of host '10.0.0.201 (10.0.0.201)' can't be established. RSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:76:84:a6. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '10.0.0.201' (RSA) to the list of known hosts. root@192.168.100.3's password: Last login: Thu Jun 26 01:50:50 2014 [root@host-10.0.0.201 ~]# # ログインできた
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