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O'Reilly Platform
book
可编程网络自动化
by
Jason Edelman
,
Scott S. Lowe
,
Matt Oswalt
January 2023
Intermediate to advanced
458 pages
14h 16m
Chinese
Posts & Telecom Press
Content preview from
可编程网络自动化
408
|
附录
A
图
A-2
:为名称空间分配接口后的接口列表
如你所见,该接口从默认网络名称空间中消失了。
尽管这里只展示了为名称空间分配物理接口的例子,但并不仅限于物理接口。假设你想为
名称空间分配一个
VLAN
接口。
[vagrant@centos ~]$
ip link set ens33.150 netns blue
[vagrant@centos ~]$
或者,假设你想为特定的名称空间分配一个
macvlan
接口。
[vagrant@centos ~]$
ip link set macvlan0 netns red
[vagrant@centos ~]$
这赋予了你在决定如何将网络名称空间与外界连接方面很大的灵活性。
不管是哪种类型的接口,将其分配到名称空间的命令都是一样的:
ip link set
interface-
name
netns
namespace-name
。而且无论接口的类型如何,一旦将其分配到某个名称空间,
它就会从默认名称空间中消失。要想使用分配给非默认名称空间的接口,需要在其所处的
名称空间上下文中执行相关命令。换句话说,必须在特定的名称空间中执行命令。
A.3.4
在网络名称空间中执行命令
要想在特定的网络名称空间上下文中执行命令,需要使用
ip netns exec
命令。该命令的
一般语法为
ip netns exec
namespace-name command
。下面来看几个例子。
上一节使用
ip link set
命令将
Debian
8.
x
系统的
eth1
接口分配给了名称空间
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Publisher Resources
ISBN: 9787115606181