提供者网络¶

创建提供者网络¶

1. 在控制节点上，加载 admin 凭证来获取管理员能执行的命令访问权限：

   $ . admin-openrc
   

2. 创建网络：

   $ openstack network create  --share --external \
     --provider-physical-network provider \
     --provider-network-type flat provider
   
   Created a new network:
   
   +---------------------------+--------------------------------------+
   | Field                     | Value                                |
   +---------------------------+--------------------------------------+
   | admin_state_up            | UP                                   |
   | availability_zone_hints   |                                      |
   | availability_zones        |                                      |
   | created_at                | 2017-03-14T14:37:39Z                 |
   | description               |                                      |
   | dns_domain                | None                                 |
   | id                        | 54adb94a-4dce-437f-a33b-e7e2e7648173 |
   | ipv4_address_scope        | None                                 |
   | ipv6_address_scope        | None                                 |
   | is_default                | None                                 |
   | mtu                       | 1500                                 |
   | name                      | provider                             |
   | port_security_enabled     | True                                 |
   | project_id                | 4c7f48f1da5b494faaa66713686a7707     |
   | provider:network_type     | flat                                 |
   | provider:physical_network | provider                             |
   | provider:segmentation_id  | None                                 |
   | qos_policy_id             | None                                 |
   | revision_number           | 3                                    |
   | router:external           | External                             |
   | segments                  | None                                 |
   | shared                    | True                                 |
   | status                    | ACTIVE                               |
   | subnets                   |                                      |
   | updated_at                | 2017-03-14T14:37:39Z                 |
   +---------------------------+--------------------------------------+
   

   ``–share``选项允许所有项目使用虚拟网络

   The --external option defines the virtual network to be external. If you wish to create an internal network, you can use --internal instead. Default value is internal.

   The --provider-physical-network provider and --provider-network-type flat options connect the flat virtual network to the flat (native/untagged) physical network on the eth1 interface on the host using information from the following files:

   ml2_conf.ini:

   [ml2_type_flat]
   flat_networks = provider
   

   linuxbridge_agent.ini:

   [linux_bridge]
   physical_interface_mappings = provider:eth1
   

3. 在网络上创建一个子网：

   $ openstack subnet create --network provider \
     --allocation-pool start=START_IP_ADDRESS,end=END_IP_ADDRESS \
     --dns-nameserver DNS_RESOLVER --gateway PROVIDER_NETWORK_GATEWAY \
     --subnet-range PROVIDER_NETWORK_CIDR provider
   

   使用提供者物理网络的子网CIDR标记替换``PROVIDER_NETWORK_CIDR``。

   将``START_IP_ADDRESS``和``END_IP_ADDRESS``使用你想分配给实例的子网网段的第一个和最后一个IP地址。这个范围不能包括任何已经使用的IP地址。

   将 DNS_RESOLVER 替换为DNS解析服务的IP地址。在大多数情况下，你可以从主机``/etc/resolv.conf`` 文件选择一个使用。

   将``PUBLIC_NETWORK_GATEWAY`` 替换为公共网络的网关，一般的网关IP地址以 ”.1” 结尾。

   Example

   公共网络203.0.113.0/24的网关为203.0.113.1。DHCP服务为每个实例分配IP，IP从203.0.113.101 到 203.0.113.200。所有实例的DNS使用8.8.4.4。

   $ openstack subnet create --network provider \
     --allocation-pool start=203.0.113.101,end=203.0.113.250 \
     --dns-nameserver 8.8.4.4 --gateway 203.0.113.1 \
     --subnet-range 203.0.113.0/24 provider
   
   Created a new subnet:
   +-------------------+--------------------------------------+
   | Field             | Value                                |
   +-------------------+--------------------------------------+
   | allocation_pools  | 203.0.113.101-203.0.113.250          |
   | cidr              | 203.0.113.0/24                       |
   | created_at        | 2016-11-02T20:45:04Z                 |
   | description       |                                      |
   | dns_nameservers   | 8.8.4.4                              |
   | enable_dhcp       | True                                 |
   | gateway_ip        | 203.0.113.1                          |
   | headers           |                                      |
   | host_routes       |                                      |
   | id                | 2c65ef8c-a5f3-4f51-94c1-4df0daaaab5c |
   | ip_version        | 4                                    |
   | ipv6_address_mode | None                                 |
   | ipv6_ra_mode      | None                                 |
   | name              | provider                             |
   | network_id        | 9793a02d-4f05-40d2-a280-407c48db0161 |
   | project_id        | 7e188c33604d4b02ae0a99b5da68cae0     |
   | revision_number   | 2                                    |
   | service_types     | []                                   |
   | subnetpool_id     | None                                 |
   | updated_at        | 2016-11-02T20:45:04Z                 |
   +-------------------+--------------------------------------+
   

返回 Launch an instance - Create virtual networks。