OpenStack Mitaka (三鷹) : Neutron ネットワーク構成 (FLAT)2016/04/28 |
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 # 152行目:追記 [ml2_type_flat]
flat_networks = physnet1
[root@network ~]#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # 176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 | | availability_zone_hints | | | availability_zones | | | created_at | 2016-04-29T09:20:28 | | description | | | id | 2ac59cb1-3d1c-45a4-a9af-2957274432bc | | ipv4_address_scope | | | ipv6_address_scope | | | mtu | 1500 | | name | sharednet1 | | port_security_enabled | True | | provider:network_type | flat | | provider:physical_network | physnet1 | | provider:segmentation_id | | | router:external | False | | shared | True | | status | ACTIVE | | subnets | | | tags | | | tenant_id | 4a80b177558b49d7a58038770a344aeb | | updated_at | 2016-04-29T09:20:28 | +---------------------------+--------------------------------------+ # 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 | | created_at | 2016-04-29T09:21:03 | | description | | | dns_nameservers | 10.0.0.1 | | enable_dhcp | True | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 8db73b65-6792-4f46-8872-1a9cec5e7957 | | ip_version | 4 | | ipv6_address_mode | | | ipv6_ra_mode | | | name | | | network_id | 2ac59cb1-3d1c-45a4-a9af-2957274432bc | | subnetpool_id | | | tenant_id | 4a80b177558b49d7a58038770a344aeb | | updated_at | 2016-04-29T09:21:03 | +-------------------+----------------------------------------------+ # 設定確認 [root@dlp ~(keystone)]# neutron net-list +--------------------------------------+------------+--------------------------------------------------+ | id | name | subnets | +--------------------------------------+------------+--------------------------------------------------+ | 2ac59cb1-3d1c-45a4-a9af-2957274432bc | sharednet1 | 8db73b65-6792-4f46-8872-1a9cec5e7957 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 $2}'` [root@dlp ~(keystone)]# nova image-list +--------------------------------------+---------+--------+--------+ | ID | Name | Status | Server | +--------------------------------------+---------+--------+--------+ | cd41a1b9-9ba6-4681-9310-e4befaf71fa5 | CentOS7 | ACTIVE | | +--------------------------------------+---------+--------+--------+
[root@dlp ~(keystone)]#
[root@dlp ~(keystone)]# nova boot --flavor 2 --image CentOS7 --security-groups default --nic net-id=$netID CentOS_7
nova list +-----------+----------+--------+------------+-------------+-----------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+----------+--------+------------+-------------+-----------------------+ | 6f6b330b- | 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 | +-------------------+--------------------------------------+ | description | | | direction | ingress | | ethertype | IPv4 | | id | 2ee46326-17cf-4b0a-89ff-84d91e5522db | | port_range_max | | | port_range_min | | | protocol | icmp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | daeb3c1f-67e1-4129-990c-49ca0504f841 | | tenant_id | 7a160aeddebd4e398fd22e6491f10baa | +-------------------+--------------------------------------+ # 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 | e99bc736-a85c-4471-ba43-105b4cb8bd99 | | port_range_max | 22 | | port_range_min | 22 | | protocol | tcp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | daeb3c1f-67e1-4129-990c-49ca0504f841 | | tenant_id | 7a160aeddebd4e398fd22e6491f10baa | +-------------------+--------------------------------------+[root@dlp ~(keystone)]# neutron security-group-rule-list +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | id | security_group | direction | ethertype | port/protocol | remote | +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | 2ee46326-17cf-4b0a-89ff-84d91e5522db | default | ingress | IPv4 | icmp | any | | 312684a0-534d-4053-98ed-ce8ddfd529f4 | default | ingress | IPv6 | any | default (group) | | 4ea4aa8d-792c-438f-966e-d01386786e97 | default | egress | IPv6 | any | any | | 5761e89a-f57f-48c6-866a-11a7f1a0e719 | default | ingress | IPv4 | any | default (group) | | 988eba63-3fb0-456d-a94a-c21aab5fedf3 | default | egress | IPv4 | any | any | | e99bc736-a85c-4471-ba43-105b4cb8bd99 | 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 00:e7:be:4a:ff:1f:08:da:a5:86:23:51:5c:30:86:73.
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: Fri Apr 29 02:31:00 2016
[root@host-10-0-0-201 ~]# # ログインできた
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