OpenStack Mitaka (三鷹) : Neutron ネットワーク構成(FLAT)2016/05/28 |
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OpenStack Network Service（Neutron）による仮想ネットワークの構成です。
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。
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+-------------+ +----+----+
| 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 |
+-----------------+
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| [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。 |
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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/linuxbridge_agent.ini # 128行目：追記 [linux_bridge]
physical_interface_mappings = physnet1:eth1
# 171行目：コメント解除して変更 enable_vxlan = false
systemctl restart neutron-linuxbridge-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。 |
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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 | 2016-05-29T16:01:56 | | description | | | id | 8579942d-402f-403a-9713-be18b9bc546a | | 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 | 004097e8a2da45e6a68f6474b5bd7207 | | updated_at | 2016-05-29T16:01:56 | +---------------------------+--------------------------------------+ # 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 | 2016-05-29T16:02:12 |
| description | |
| dns_nameservers | 10.0.0.1 |
| enable_dhcp | True |
| gateway_ip | 10.0.0.1 |
| host_routes | |
| id | 24723118-8f1e-4530-aca7-b1dca4b6995d |
| ip_version | 4 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | |
| network_id | 8579942d-402f-403a-9713-be18b9bc546a |
| subnetpool_id | |
| tenant_id | 004097e8a2da45e6a68f6474b5bd7207 |
| updated_at | 2016-05-29T16:02:12 |
+-------------------+----------------------------------------------+
# 設定確認 root@dlp ~(keystone)# neutron net-list +--------------------------------------+------------+--------------------------------------------------+ | id | name | subnets | +--------------------------------------+------------+--------------------------------------------------+ | 8579942d-402f-403a-9713-be18b9bc546a | sharednet1 | 24723118-8f1e-4530-aca7-b1dca4b6995d 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。 |
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root@dlp ~(keystone)# netID=`neutron net-list | grep sharednet1 | awk '{print $2}'` root@dlp ~(keystone)# nova image-list +--------------------------------------+------------+--------+--------+ | ID | Name | Status | Server | +--------------------------------------+------------+--------+--------+ | d7e743c4-c1f5-458b-abc5-2d9176c07a93 | Ubuntu1604 | ACTIVE | | +--------------------------------------+------------+--------+--------+
root@dlp ~(keystone)#
root@dlp ~(keystone)# nova boot --flavor 2 --image Ubuntu1604 --security-groups default --nic net-id=$netID Ubuntu_1604
nova list +--------------------------------------+-------------+--------+------------+-------------+-----------------------+ | ID | Name | Status | Task State | Power State | Networks | +--------------------------------------+-------------+--------+------------+-------------+-----------------------+ | c600c707-59b2-4377-a2a0-830a13713b83 | Ubuntu_1604 | 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。 |
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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 | +-------------------+--------------------------------------+ | description | | | direction | ingress | | ethertype | IPv4 | | id | 67699149-a85e-4334-91cc-48865147b7fd | | port_range_max | | | port_range_min | | | protocol | icmp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 04d72bc2-a73e-4803-b93a-0e22e69bae9f | | tenant_id | 61bb62a97e394b8db8f95aa05a678771 | +-------------------+--------------------------------------+ # 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 | 492eb253-3314-420a-98ee-3d652aecbe86 | | port_range_max | 22 | | port_range_min | 22 | | protocol | tcp | | remote_group_id | | | remote_ip_prefix | | | security_group_id | 04d72bc2-a73e-4803-b93a-0e22e69bae9f | | tenant_id | 61bb62a97e394b8db8f95aa05a678771 | +-------------------+--------------------------------------+root@dlp ~(keystone)# neutron security-group-rule-list +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | id | security_group | direction | ethertype | port/protocol | remote | +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ | 492eb253-3314-420a-98ee-3d652aecbe86 | default | ingress | IPv4 | 22/tcp | any | | 67699149-a85e-4334-91cc-48865147b7fd | default | ingress | IPv4 | icmp | any | | 6976acfc-c439-44f1-b8a1-be9b917ebef2 | default | ingress | IPv4 | any | default (group) | | 710640ac-f8ac-4d29-b708-861476758f83 | default | ingress | IPv6 | any | default (group) | | 7ab15e66-e89b-4c72-b7b9-a7a216d14a81 | default | egress | IPv4 | any | any | | 825efe36-22a0-4037-9cb9-3622b798fea0 | default | egress | IPv6 | any | any | +--------------------------------------+----------------+-----------+-----------+---------------+-----------------+ |
| [5] | インスタンスにログインします。 |
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root@dlp ~(keystone)# ssh xerus@10.0.0.201
The authenticity of host '10.0.0.201 (10.0.0.201)' can't be established.
ECDSA key fingerprint is SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
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.
xerus@10.0.0.201's password:
Welcome to Ubuntu 16.04 LTS (GNU/Linux 4.4.0-22-generic x86_64)
* Documentation: https://help.ubuntu.com/
0 packages can be updated.
0 updates are security updates.
The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.
xerus@ubuntu:~$ # ログインできた
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