玩转OpenStack网络Neutron(1)--热身

转载自：http://blog.csdn.net/yanheven1/article/details/44788581#0-tsina-1-32631-397232819ff9a47a7b7e80a40613cfe1OpenStack 网络介绍随着计算资源从物理机到虚拟机的迁移,相应地,虚拟机的网络也从以前的物理网络迁移到虚拟网络.而在OpenStack这个开源的云计算项目中,负责

liukuan73

2304人浏览 · 2015-05-25 19:23:17

liukuan73 · 2015-05-25 19:23:17 发布

转载自：http://blog.csdn.net/yanheven1/article/details/44788581#0-tsina-1-32631-397232819ff9a47a7b7e80a40613cfe1

OpenStack 网络介绍

随着计算资源从物理机到虚拟机的迁移,相应地,虚拟机的网络也从以前的物理网络迁移到虚拟网络.而在OpenStack这个开源的云计算项目中,负责网络虚拟化的是Neutron(曾用名:Quantum)和Nova-Network, 后者之前是作为Nova的一个服务来看待,而Neutron则是一个完整的子项目,当然,提供的功能也更多,支持更多的网络插件.本系列文章,将主要学习研究Neutron,学习不同插件的配置使用,不同网络类型的使用.由于侧重点为网络的配置使用,所以本文章假定读者已经拥有一个最小的两节点的OpenStack集群(布署可参考官方文档,或者陈沙克的博文:http://www.chenshake.com/install-openstack-openstack-juno-version/).安装如下:

控制节点:
keystone, glance, nova, neutron
计算节点:
nova-compute, neutron agent

在Neutron里面,有几个基本概念,其实跟物理网络一样.

网络Network:三层网络, 可以包含多个子网.
子网Subnet:三层网络, 每个子网有自己的网络号(CIDR).
接口Port:虚拟网络中的接口, 类比物理网络设备上的网线接口.
路由器Router: 类比物理网络中的路由器,用于不同三层网络之前通信.

通过 Horizon 创建网络

用有效的用户名密码登陆控制台, 找到”Network”,然后点击此栏目下面的”Networks”处,弹出网络信息页,显示当前项目的网络信息,然后通过点击”Create Network”来创建网络:

create network-2

随后, 填写网络名称, 然后可以直接不填子网信息, 直接下一步, 创建网络即可.

create network-2

通过 Horizon 创建子网

在网络信息页,找到刚才创建的网络,点击进去:

subnet-create-1

填写子网名称, 子网的网络CIDR, 网关不指定, 默认会帮你指定为网络的第一个可用IP, 此时是192.1168.1.1, 不禁用网关:

subnet-create-2

通过 Horizon 查看网络信息

通过进入网络信息页面,可以看到当前项目的所有网络,点击某个网络进去,可以看到这个网络的信息, 这个网络所包含的子网的信息, 以及这个网络里面创建的接口的信息.

network-info-1

点击某个子网或者某个接口,可以进去查看它的详细信息,比如点击子网”yan-in”

network-info-2

通过 Horizon 创建关联某个网络的实例

在”Compute”栏目,打开里面的”Instances”, 点击”Launch Instance”按钮, 即打开的创建实例(虚拟机)的工作流了

填写主机名,选择配置,镜像等

launch-instance-1

选择主机使用的网络,点击刚才我们创建的网络”yan-test”, 点击后它自动从下的”Available networks”面移动到上面的”Selected Networks”处

launch-instance-2

忽略其他标签的设置,点击”Launch”, 即可创建使用这个网络的实例了.
若干秒后,可以看到成功创建的实例:

launch-instance-3

还可以点击实例名称”yan-test”进入查看实例详情:

launch-instance-4

通过命令行创建网络

首先,创建一个网络:

<code class="hljs asciidoc has-numbering" style="display: block; padding: 0px; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background-image: initial; background-attachment: initial; background-color: transparent; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><span style="color: inherit;">$ </span><span style="color:#ff0000;">neutron net-create yan-net-test01</span><span style="color:rgba(0, 0, 0, 0);">

</span><span class="hljs-header" style="color: inherit; box-sizing: border-box;">Created a new network:
+---------------------------+--------------------------------------+</span><span style="color:rgba(0, 0, 0, 0);">
</span><span class="hljs-header" style="color: inherit; box-sizing: border-box;">| Field                     | Value                                |
+---------------------------+--------------------------------------+</span><span style="color:rgba(0, 0, 0, 0);">
| admin</span><span class="hljs-emphasis" style="color: inherit; box-sizing: border-box;">_state_</span><span style="color:rgba(0, 0, 0, 0);">up            | True                                 |
| id                        | c20a2764-1c1a-4091-ac2a-bb82f7f1d20d |
| name                      | yan-net-test01                       |
| provider:physical</span><span class="hljs-emphasis" style="color: inherit; box-sizing: border-box;">_network |                                      |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_</span><span style="color:rgba(0, 0, 0, 0);">id                 | 0d896fe854f64e90915ce599aa1e1c0b     |
</span><span class="hljs-code" style="color: inherit; box-sizing: border-box;">+---------------------------+</span><span style="color:rgba(0, 0, 0, 0);">--------------------------------------+</span></code><ul class="pre-numbering" style="color: rgb(51, 51, 51); box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li></ul>

可以通过命令查看刚才创建的网络详细信息:

<code class="hljs asciidoc has-numbering" style="display: block; padding: 0px; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background-image: initial; background-attachment: initial; background-color: transparent; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><span class="hljs-header" style="box-sizing: border-box;"><span style="color:rgba(0, 0, 0, 0);">$ </span><span style="color:#ff0000;">neutron  net-show yan-net-test01</span><span style="color:rgba(0, 0, 0, 0);">
+---------------------------+--------------------------------------+</span></span><span style="color:rgba(0, 0, 0, 0);">
</span><span class="hljs-header" style="color: inherit; box-sizing: border-box;">| Field                     | Value                                |
+---------------------------+--------------------------------------+</span><span style="color:rgba(0, 0, 0, 0);">
| admin</span><span class="hljs-emphasis" style="color: inherit; box-sizing: border-box;">_state_</span><span style="color:rgba(0, 0, 0, 0);">up            | True                                 |
| id                        | c20a2764-1c1a-4091-ac2a-bb82f7f1d20d |
| name                      | yan-net-test01                       |
| provider:physical</span><span class="hljs-emphasis" style="color: inherit; box-sizing: border-box;">_network |                                      |
| router:external           | False                                |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_</span><span style="color:rgba(0, 0, 0, 0);">id                 | 0d896fe854f64e90915ce599aa1e1c0b     |
</span><span class="hljs-code" style="color: inherit; box-sizing: border-box;">+---------------------------+</span><span style="color:rgba(0, 0, 0, 0);">--------------------------------------+</span></code><ul class="pre-numbering" style="color: rgb(51, 51, 51); box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li></ul>

更多命令可以通过help出来查看:

<code class="hljs lasso has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">$ neutron help <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">|</span> grep <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" net-"</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-create</span>                     Create a network for a given tenant<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-delete</span>                     Delete a given network<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-external</span><span class="hljs-attribute" style="box-sizing: border-box;">-list</span>              <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">List</span> external networks that belong <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span> a given tenant<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-gateway</span><span class="hljs-attribute" style="box-sizing: border-box;">-connect</span>            Add an internal network interface <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span> a router<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-gateway</span><span class="hljs-attribute" style="box-sizing: border-box;">-create</span>             Create a network gateway<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-gateway</span><span class="hljs-attribute" style="box-sizing: border-box;">-delete</span>             Delete a given network gateway<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-gateway</span><span class="hljs-attribute" style="box-sizing: border-box;">-disconnect</span>         Remove a network from a network gateway<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-gateway</span><span class="hljs-attribute" style="box-sizing: border-box;">-list</span>               <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">List</span> network gateways for a given tenant<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-gateway</span><span class="hljs-attribute" style="box-sizing: border-box;">-show</span>               Show information of a given network gateway<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-gateway</span><span class="hljs-attribute" style="box-sizing: border-box;">-update</span>             Update the name for a network gateway<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-list</span>                       <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">List</span> networks that belong <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span> a given tenant<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-list</span><span class="hljs-attribute" style="box-sizing: border-box;">-on</span><span class="hljs-attribute" style="box-sizing: border-box;">-dhcp</span><span class="hljs-attribute" style="box-sizing: border-box;">-agent</span>         <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">List</span> the networks <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">on</span> a DHCP agent<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-show</span>                       Show information of a given network<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>
  net<span class="hljs-attribute" style="box-sizing: border-box;">-update</span>                     Update network<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'s information.
</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li></ul>

某个具体命令的用法,也可以通过help来查看使用方法,可以查看命令需要哪些参数,以及它的功能. 比如刚才我们用的show命令:

<code class="hljs sql has-numbering" style="display: block; padding: 0px; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background-image: initial; background-attachment: initial; background-color: transparent; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><span style="color: inherit;">$ neutron </span><span style="color:#ff0000;">help</span><span style="color:rgba(0, 0, 0, 0);"> </span>net-<span class="hljs-operator" style="box-sizing: border-box;"><span class="hljs-keyword" style="box-sizing: border-box;">show</span><span style="color:rgba(0, 0, 0, 0);">
</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">usage</span><span style="color:rgba(0, 0, 0, 0);">: neutron net-</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">show</span><span style="color:rgba(0, 0, 0, 0);"> [-h] [-f {shell,</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">table</span><span style="color:rgba(0, 0, 0, 0);">,</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span><span style="color:rgba(0, 0, 0, 0);">}] [-c </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">COLUMN</span><span style="color:rgba(0, 0, 0, 0);">]
                        [--</span><span class="hljs-aggregate" style="color: inherit; box-sizing: border-box;">max</span><span style="color:rgba(0, 0, 0, 0);">-width <</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">integer</span><span style="color:rgba(0, 0, 0, 0);">>] [--prefix PREFIX]
                        [--request-format {json,xml}] [-D] [-F FIELD]
                        NETWORK

</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">Show</span><span style="color:rgba(0, 0, 0, 0);"> information </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">of</span><span style="color:rgba(0, 0, 0, 0);"> a given network.

positional arguments:
  NETWORK               ID </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">or</span><span style="color:rgba(0, 0, 0, 0);"> name </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">of</span><span style="color:rgba(0, 0, 0, 0);"> network </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span><span style="color:rgba(0, 0, 0, 0);"> look up.

optional arguments:
  -h, --help            </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">show</span><span style="color:rgba(0, 0, 0, 0);"> this help message </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">and</span><span style="color:rgba(0, 0, 0, 0);"> exit
  --request-format {json,xml}
                        The XML </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">or</span><span style="color:rgba(0, 0, 0, 0);"> JSON request format.
  -D, --</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">show</span><span style="color:rgba(0, 0, 0, 0);">-details    </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">Show</span><span style="color:rgba(0, 0, 0, 0);"> detailed information.
  -F FIELD, --field FIELD
                        Specify the field(s) </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span><span style="color:rgba(0, 0, 0, 0);"> be returned </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">by</span><span style="color:rgba(0, 0, 0, 0);"> server. You can
                        repeat this </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">option</span><span style="color:rgba(0, 0, 0, 0);">.

</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">output</span><span style="color:rgba(0, 0, 0, 0);"> formatters:
  </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">output</span><span style="color:rgba(0, 0, 0, 0);"> formatter options

  -f {shell,</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">table</span><span style="color:rgba(0, 0, 0, 0);">,</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span><span style="color:rgba(0, 0, 0, 0);">}, --format {shell,</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">table</span><span style="color:rgba(0, 0, 0, 0);">,</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">value</span><span style="color:rgba(0, 0, 0, 0);">}
                        the </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">output</span><span style="color:rgba(0, 0, 0, 0);"> format, defaults </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span><span style="color:rgba(0, 0, 0, 0);"> </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">table</span><span style="color:rgba(0, 0, 0, 0);">
  -c </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">COLUMN</span><span style="color:rgba(0, 0, 0, 0);">, --</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">column</span><span style="color:rgba(0, 0, 0, 0);"> </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">COLUMN</span><span style="color:rgba(0, 0, 0, 0);">
                        specify the </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">column</span><span style="color:rgba(0, 0, 0, 0);">(s) </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span><span style="color:rgba(0, 0, 0, 0);"> include, can be repeated

</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">table</span><span style="color:rgba(0, 0, 0, 0);"> formatter:
  --</span><span class="hljs-aggregate" style="color: inherit; box-sizing: border-box;">max</span><span style="color:rgba(0, 0, 0, 0);">-width <</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">integer</span><span style="color:rgba(0, 0, 0, 0);">>
                        Maximum display width, </span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span><span style="color:rgba(0, 0, 0, 0);"> </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span><span style="color:rgba(0, 0, 0, 0);"> disable

shell formatter:
  a format a UNIX shell can parse (variable=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"value"</span><span style="color:rgba(0, 0, 0, 0);">)

  --prefix PREFIX       </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">add</span><span style="color:rgba(0, 0, 0, 0);"> a prefix </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span><span style="color:rgba(0, 0, 0, 0);"> </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">all</span><span style="color:rgba(0, 0, 0, 0);"> variable </span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">names</span><span style="color:rgba(0, 0, 0, 0);">
</span></span></code><ul class="pre-numbering" style="color: rgb(51, 51, 51); box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li></ul>

看到可以改变输出的格式,比如让输出为shell格式:

<code class="hljs lasso has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">$ neutron  net<span class="hljs-attribute" style="box-sizing: border-box;">-show</span> yan<span class="hljs-attribute" style="box-sizing: border-box;">-net</span><span class="hljs-attribute" style="box-sizing: border-box;">-test01</span> <span class="hljs-attribute" style="box-sizing: border-box;">-f</span> shell
admin_state_up<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"True"</span>
id<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"c20a2764-1c1a-4091-ac2a-bb82f7f1d20d"</span>
name<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"yan-net-test01"</span>
provider:physical_network<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">""</span>
router:external<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"False"</span>
shared<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"False"</span>
status<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"ACTIVE"</span>
subnets<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">""</span>
tenant_id<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"0d896fe854f64e90915ce599aa1e1c0b"</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li></ul>

通过命令行创建子网

查看子网,有哪些相关命令:

<code class="hljs sql has-numbering" style="display: block; padding: 0px; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background-image: initial; background-attachment: initial; background-color: transparent; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><span style="color: inherit;">$ </span><span style="color:#ff0000;">neutron  help | grep subnet</span><span style="color:rgba(0, 0, 0, 0);">
  subnet-</span><span class="hljs-operator" style="color: inherit; box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">create</span>                  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">Create</span> a subnet <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> a given tenant.
  subnet-<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">delete</span>                  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">Delete</span> a given subnet.
  subnet-list                    List subnets that belong <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span> a given tenant.
  subnet-<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">show</span>                    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">Show</span> information <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">of</span> a given subnet.
  subnet-<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">update</span>                  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">Update</span> subnet<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'s information.
</span></span></code><ul class="pre-numbering" style="color: rgb(51, 51, 51); box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li></ul>

创建子网,就跟在horizon页面创建类似,指定网络,以及子网的CIDR等这些具体信息:

<code class="hljs asciidoc has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">$ neutron subnet-create yan-net-test01 --name yan-test01-subnet  --gateway 192.168.1.1 192.168.1.0/24

<span class="hljs-header" style="box-sizing: border-box;">Created a new subnet:
+------------------+--------------------------------------------------+</span>
<span class="hljs-header" style="box-sizing: border-box;">| Field            | Value                                            |
+------------------+--------------------------------------------------+</span>
| allocation<span class="hljs-emphasis" style="box-sizing: border-box;">_pools | {"start": "192.168.1.2", "end": "192.168.1.254"} |
| cidr             | 192.168.1.0/24                                   |
| dns_</span>nameservers  |                                                  |
| enable<span class="hljs-emphasis" style="box-sizing: border-box;">_dhcp      | True                                             |
| gateway_</span>ip       | 192.168.1.1                                      |
| host<span class="hljs-emphasis" style="box-sizing: border-box;">_routes      |                                                  |
| id               | ee2c7da4-083b-4510-9fef-21a58dc47b3d             |
| ip_</span>version       | 4                                                |
| name             | yan-test01-subnet                                |
| network<span class="hljs-emphasis" style="box-sizing: border-box;">_id       | c20a2764-1c1a-4091-ac2a-bb82f7f1d20d             |
| tenant_</span>id        | 0d896fe854f64e90915ce599aa1e1c0b                 |
<span class="hljs-code" style="box-sizing: border-box;">+------------------+</span>--------------------------------------------------+
</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li></ul>

通过命令行创建Port

查看port都有哪些相关命令:

<code class="hljs vhdl has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">$ neutron  help | grep <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span>-
  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span>-create                    Create a <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> a given tenant.
  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span>-delete                    Delete a given <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span>.
  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span>-list                      List ports that belong <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span> a given tenant.
  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span>-show                      Show information <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">of</span> a given <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span>.
  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span>-update                    Update <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span><span class="hljs-attribute" style="box-sizing: border-box;">'s</span> information.
  router-<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">port</span>-list               List ports that belong <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">to</span> a given tenant, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">with</span> specified router.
</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li></ul>

创建port:

<code class="hljs asciidoc has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">$ neutron port-create yan-net-test01

<span class="hljs-header" style="box-sizing: border-box;">Created a new port:
+-----------------------+------------------------------------------------------------------------------------+</span>
<span class="hljs-header" style="box-sizing: border-box;">| Field                 | Value                                                                              |
+-----------------------+------------------------------------------------------------------------------------+</span>
| admin<span class="hljs-emphasis" style="box-sizing: border-box;">_state_</span>up        | True                                                                               |
| allowed<span class="hljs-emphasis" style="box-sizing: border-box;">_address_</span>pairs |                                                                                    |
| binding:host<span class="hljs-emphasis" style="box-sizing: border-box;">_id       |                                                                                    |
| binding:profile       | {}                                                                                 |
| binding:vif_</span>details   | {}                                                                                 |
| binding:vif<span class="hljs-emphasis" style="box-sizing: border-box;">_type      | unbound                                                                            |
| binding:vnic_</span>type     | normal                                                                             |
| device<span class="hljs-emphasis" style="box-sizing: border-box;">_id             |                                                                                    |
| device_</span>owner          |                                                                                    |
| fixed<span class="hljs-emphasis" style="box-sizing: border-box;">_ips             | {"subnet_</span>id": "ee2c7da4-083b-4510-9fef-21a58dc47b3d", "ip<span class="hljs-emphasis" style="box-sizing: border-box;">_address": "192.168.1.2"} |
| id                    | c1e9efdb-aa67-4a77-b80c-dd4321b39f1c                                               |
| mac_</span>address           | fa:16:3e:1a:f8:5b                                                                  |
| name                  |                                                                                    |
| network<span class="hljs-emphasis" style="box-sizing: border-box;">_id            | c20a2764-1c1a-4091-ac2a-bb82f7f1d20d                                               |
| security_</span>groups       | 5e179e17-f641-429b-a876-1361e9b4792a                                               |
| status                | DOWN                                                                               |
<span class="hljs-header" style="box-sizing: border-box;">| tenant_id             | 0d896fe854f64e90915ce599aa1e1c0b                                                   |
+-----------------------+------------------------------------------------------------------------------------+</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li></ul>

其实创建接口,我们还可以指定很多信息,比如接口的名称,接口的IP地址, 绑定的安全组信息等, 详细可以help一下:

<code class="hljs livecodeserver has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">$ neutron  help port-<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">create</span>
usage: neutron port-<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">create</span> [-h] [-f {<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">shell</span>,table,<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">value</span>}] [-c COLUMN]
                           [<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--max-width <integer>] [--prefix PREFIX]</span>
                           [<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--request-format {json,xml}]</span>
                           [<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--tenant-id TENANT_ID] [--name NAME]</span>
                           [<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--fixed-ip subnet_id=SUBNET,ip_address=IP_ADDR]</span>
                           [<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--device-id DEVICE_ID]</span>
                           [<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--device-owner DEVICE_OWNER] [--admin-state-down]</span>
                           [<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--mac-address MAC_ADDRESS]</span>
                           [<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--security-group SECURITY_GROUP | --no-security-groups]</span>
                           [<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--extra-dhcp-opt EXTRA_DHCP_OPTS]</span>
                           NETWORK

Create <span class="hljs-operator" style="box-sizing: border-box;">a</span> port <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> <span class="hljs-operator" style="box-sizing: border-box;">a</span> given tenant.

positional arguments:
  NETWORK               Network ID <span class="hljs-operator" style="box-sizing: border-box;">or</span> name this port belongs <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">to</span>.

optional arguments:
  -h, <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--help            show this help message and exit</span>
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--request-format {json,xml}</span>
                        The XML <span class="hljs-operator" style="box-sizing: border-box;">or</span> JSON request <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">format</span>.
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--tenant-id TENANT_ID</span>
                        The owner tenant ID.
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--name NAME           Name of this port.</span>
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--fixed-ip subnet_id=SUBNET,ip_address=IP_ADDR</span>
                        Desired IP <span class="hljs-operator" style="box-sizing: border-box;">and</span>/<span class="hljs-operator" style="box-sizing: border-box;">or</span> subnet <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> this port:
                        subnet_id=<name_or_id>,ip_address=<ip>. You can <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">repeat</span>
                        this option.
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--device-id DEVICE_ID</span>
                        Device ID <span class="hljs-operator" style="box-sizing: border-box;">of</span> this port.
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--device-owner DEVICE_OWNER</span>
                        Device owner <span class="hljs-operator" style="box-sizing: border-box;">of</span> this port.
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--admin-state-down    Set admin state up to false.</span>
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--mac-address MAC_ADDRESS</span>
                        MAC address <span class="hljs-operator" style="box-sizing: border-box;">of</span> this port.
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--security-group SECURITY_GROUP</span>
                        Security group associated <span class="hljs-operator" style="box-sizing: border-box;">with</span> <span class="hljs-operator" style="box-sizing: border-box;">the</span> port. You can
                        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">repeat</span> this option.
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--no-security-groups  Associate no security groups with the port.</span>
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--extra-dhcp-opt EXTRA_DHCP_OPTS</span>
                        Extra dhcp options <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">to</span> be assigned <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">to</span> this port: opt_na
                        me=<dhcp_option_name>,opt_value=<<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">value</span>>,ip_version={<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>,
                        <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">6</span>}. You can <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">repeat</span> this option.

output formatters:
  output formatter options

  -f {<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">shell</span>,table,<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">value</span>}, <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--format {shell,table,value}</span>
                        <span class="hljs-operator" style="box-sizing: border-box;">the</span> output <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">format</span>, defaults <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">to</span> table
  -c COLUMN, <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--column COLUMN</span>
                        specify <span class="hljs-operator" style="box-sizing: border-box;">the</span> column(s) <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">to</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">include</span>, can be repeated

table formatter:
  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--max-width <integer></span>
                        Maximum display width, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">to</span> disable

<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">shell</span> formatter:
  <span class="hljs-operator" style="box-sizing: border-box;">a</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">format</span> <span class="hljs-operator" style="box-sizing: border-box;">a</span> UNIX <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">shell</span> can parse (<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">variable</span>=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"value"</span>)

  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">--prefix PREFIX       add a prefix to all variable names</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li></ul>

通过命令行创建指定Port的实例

首先要确定创建实例的配置大小,镜像,然后指定使用刚才创建的接口Port来创建实例:

<code class="hljs 1c has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">$ nova boot yan-instance01 --flavor m1.small --image Ubuntu-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">14.04</span>-Server-amd64 --nic port-id=c1e9efdb-aa67-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>a77-b80c-dd4321b39f1c 

+--------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| Property                             | Value                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |</span>
+--------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| OS-DCF:diskConfig                    | MANUAL                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| OS-EXT-AZ:availability_zone          | nova                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| OS-EXT-STS:power_state               | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| OS-EXT-STS:task_state                | -                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| OS-EXT-STS:vm_state                  | building                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| OS-SRV-USG:launched_at               | -                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| OS-SRV-USG:terminated_at             | -                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| accessIPv4                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| accessIPv6                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| config_drive                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| created                              | 2015-04-11T08:44:30Z                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| default_ephemeral_device             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| default_swap_device                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| flavor                               | m1.small (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| hostId                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| id                                   | 01a2a55e-f1d4-4b4b-a81d-e6aaf8ee4693                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| image                                | Ubuntu-14.04-Server-amd64 (7991bbbd-ab70-4b66-93fe-5813aac5c6c5)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| key_name                             | -                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| metadata                             | {}                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| name                                 | yan-instance01                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| os-extended-volumes:volumes_attached | []                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| progress                             | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| root_device_name                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| security_groups                      | default                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| status                               | BUILD                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| tenant_id                            | 0d896fe854f64e90915ce599aa1e1c0b                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| updated                              | 2015-04-11T08:44:30Z                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |</span>
<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">| user_id                              | dd446a6b042c4ecab7175dc07f91fef2                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |</span>
+--------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li></ul>

当然,创建实例时,关于网络的选择,除了可以指定port外,你还可以指定创建实例的IP地址,如果只指定网络,其实OPENSTACK的创建流程,也会先帮你创建这个网络的一个port,只不过这个步骤没暴露出来而已.

扩展网络地址范围

之前创建网络时只创建了一个子网,而子网的网络号(CIDR)信息是不能修改的.这里我们想要增加这个网络的地址范围,就只能在这个网络下创建多个子网,而且创建的子网不能有地址重叠,否则会报错,创建失败.

创建流程与创建第一个子网时一样.

subnet-create-3

当然,扩展网络地址范围还有种情况,就是我们创建子网时指定的地址池”Allocation Pools”,则可以通过命令行下子网修改命令来进行这个地址池的扩展,但无论怎样,地址范围都限定在创建时指定的CIDR范围里.

<code class="hljs lasso has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">$ neutron help subnet<span class="hljs-attribute" style="box-sizing: border-box;">-updateusage</span>: neutron subnet<span class="hljs-attribute" style="box-sizing: border-box;">-update</span> <span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-attribute" style="box-sizing: border-box;">-h</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;"> </span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">--</span>request<span class="hljs-attribute" style="box-sizing: border-box;">-format</span> {json,<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">xml</span>}<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;"> </span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">--</span>name NAME<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;">
                             </span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">--</span>gateway GATEWAY_IP<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;"> </span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">--</span>no<span class="hljs-attribute" style="box-sizing: border-box;">-gateway</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;">
                             </span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">--</span>allocation<span class="hljs-attribute" style="box-sizing: border-box;">-pool</span> start<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span>IP_ADDR,end<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span>IP_ADDR<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;">
                             </span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">--</span>host<span class="hljs-attribute" style="box-sizing: border-box;">-route</span> destination<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span>CIDR,nexthop<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span>IP_ADDR<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;">
                             </span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">--</span>dns<span class="hljs-attribute" style="box-sizing: border-box;">-nameserver</span> DNS_NAMESERVER<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;">
                             </span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">--</span>disable<span class="hljs-attribute" style="box-sizing: border-box;">-dhcp</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;"> </span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">[</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">--</span>enable<span class="hljs-attribute" style="box-sizing: border-box;">-dhcp</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">]</span><span class="hljs-markup" style="box-sizing: border-box;">
                             SUBNET</span></code>