OpenStack Liberty : Neutron ネットワーク構成(FLAT)2015/11/15 |
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。
| +-------------+ +----+----+ | Name Server | | Gateway | +------+------+ +----+----+ |10.0.0.10 |10.0.0.1 | | +------------+-----------------+------------------+ | | | | 10.0.0.200-10.0.0.250 eth0|10.0.0.30 | eth0|10.0.0.50 | +-----------------+ +--------+---------+ | +-----------+----------+ | +---| Virtual Machine | | [ Control Node ] | | | [ Network Node ] | | | +-----------------+ | Keystone | | | DHCP Agent | | | +-----------------+ | Glance | | | L3 Agent |eth1 | |---| Virtual Machine | | Nova API | | | L2 Agent | | | +-----------------+ | Neutron Server | | | Metadata Agent | | | +-----------------+ +------------------+ | +----------------------+ +-----+---| Virtual Machine | | | +-----------------+ | +----------------------+ | +-----------------+ | eth0| [ Compute Node ] | |---| Virtual Machine | +-----| Nova Compute |eth1 | +-----------------+ 10.0.0.51| L2 Agent | | +-----------------+ +----------------------+ +---| Virtual Machine | +-----------------+ |
[1] | Network ノード、および Compute ノードの両方で以下のように設定します。 |
# 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 # 65行目あたり:追記 [ml2_type_flat]
flat_networks = physnet1
[root@network ~]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 2行目:追記 [ovs]
bridge_mappings = physnet1:br-eth1
systemctl restart neutron-openvswitch-agent |
[2] | ネットワークを作成します。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。 |
[root@dlp ~(keystone)]#
tenantID=`openstack project list | grep service | awk '{print $2}'` # 「sharednet1」という名前のネットワークを作成 [root@dlp ~(keystone)]# neutron net-create --tenant-id $tenantID sharednet1 \ --shared --provider:network_type flat --provider:physical_network physnet1 Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | id | 0ff058fc-b4bf-4d94-b467-fb51090b613d | | mtu | 0 | | name | sharednet1 | | provider:network_type | flat | | provider:physical_network | physnet1 | | provider:segmentation_id | | | router:external | False | | shared | True | | status | ACTIVE | | subnets | | | tenant_id | 11a4bfa2b8c748ad860efb34b5fefb7f | +---------------------------+--------------------------------------+ # 作成した「sharednet1」に「10.0.0.0/24」のサブネットを作成 [root@dlp ~(keystone)]# neutron subnet-create \ --tenant-id $tenantID --gateway 10.0.0.1 --dns-nameserver 10.0.0.1 \ --allocation-pool start=10.0.0.200,end=10.0.0.250 sharednet1 10.0.0.0/24 Created a new subnet: +-------------------+----------------------------------------------+ | Field | Value | +-------------------+----------------------------------------------+ | allocation_pools | {"start": "10.0.0.200", "end": "10.0.0.250"} | | cidr | 10.0.0.0/24 | | dns_nameservers | 10.0.0.1 | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 44f0c8f5-53d3-4cf4-acc0-529212b307b2 | | ip_version | 4 | | ipv6_address_mode | | | ipv6_ra_mode | | | name | | | network_id | 0ff058fc-b4bf-4d94-b467-fb51090b613d | | subnetpool_id | | | tenant_id | 11a4bfa2b8c748ad860efb34b5fefb7f | +-------------------+----------------------------------------------+ # 設定確認 [root@dlp ~(keystone)]# neutron net-list +--------------------------------------+------------+--------------------------------------------------+ | id | name | subnets | +--------------------------------------+------------+--------------------------------------------------+ | 0ff058fc-b4bf-4d94-b467-fb51090b613d | sharednet1 | 44f0c8f5-53d3-4cf4-acc0-529212b307b2 10.0.0.0/24 | +--------------------------------------+------------+--------------------------------------------------+ |
[3] | 作成したネットワークをインスタンスに紐付けてインスタンスを作成・起動します。 |
[root@dlp ~(keystone)]# netID=`neutron net-list | grep sharednet1 | awk '{print $2}'` [root@dlp ~(keystone)]# nova image-list +--------------------------------------+---------+--------+--------+ | ID | Name | Status | Server | +--------------------------------------+---------+--------+--------+ | 34beed31-2971-43f0-9c5a-d39d3df1d501 | CentOS7 | ACTIVE | | +--------------------------------------+---------+--------+--------+
[root@dlp ~(keystone)]#
[root@dlp ~(keystone)]# nova boot --flavor 2 --image CentOS7 --security_group default --nic net-id=$netID CentOS_7
nova list +-----------+----------+--------+------------+-------------+-----------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+----------+--------+------------+-------------+-----------------------+ | d2940d50- | CentOS_7 | ACTIVE | - | Running | sharednet1=10.0.0.201 | +-----------+----------+--------+------------+-------------+-----------------------+ |
[4] | 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。 |
# 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 | db4c60a3-cc3a-402d-94e0-e0484d8e68c9 | | port_range_max | | | port_range_min | | | protocol | icmp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 7a196ffd-a7d0-49ff-8771-cde18d299d72 | | 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 | f19c4f1f-7055-4a8e-8b6a-67282ea5819a | | port_range_max | 22 | | port_range_min | 22 | | protocol | tcp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 7a196ffd-a7d0-49ff-8771-cde18d299d72 | | tenant_id | d625e02b3d394afbad250def2f88fefa | +-------------------+--------------------------------------+[root@dlp ~(keystone)]# neutron security-group-rule-list +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | id | security_group | direction | ethertype | protocol/port | remote | +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | 08262f7f-584f-4f26-933b-ab7a4dc888a9 | default | ingress | IPv4 | any | default (group) | | aff0d3dc-ed67-4e8b-85c6-e2eb42311fe3 | default | egress | IPv4 | any | any | | bcacccd1-5424-4407-8b9b-5002ef035be4 | default | egress | IPv6 | any | any | | cbd0e7e6-a372-410e-9d33-0f6ae7c7a2e0 | default | ingress | IPv6 | any | default (group) | | db4c60a3-cc3a-402d-94e0-e0484d8e68c9 | default | ingress | IPv4 | icmp | any | | f19c4f1f-7055-4a8e-8b6a-67282ea5819a | default | ingress | IPv4 | 22/tcp | any | +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ |
[5] | インスタンスにログインします。 |
[root@dlp ~(keystone)]# ssh 10.0.0.201 The authenticity of host '10.0.0.201 (10.0.0.201)' can't be established. 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-10-0-0-201 ~]# # ログインできた
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