January 2023
Intermediate to advanced
458 pages
14h 16m
Chinese
Content preview from 可编程网络自动化
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Linux
高级联网
｜
411
--- 10.0.3.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3002ms
rtt min/avg/max/mdev = 0.046/0.066/0.078/0.016 ms
vagrant@trusty:~$
刚才我们都做了些什么？
veth pair
已经有了，所以我们创建了一个名为
green
的名称空间
并将
veth1
置入其中
。然后给
veth1
分配
IP
地址并启用了该接口。为了使默认名称空间有
一条通往目的地的路由，我们给
veth0
添加了
IP
地址
。接下来，在两个网络名称空间之间
执行了
ping
命令。
如果想使用
veth pair
将
网络名称空间连接到外界呢？没问题——创建
veth pair
，将其中一
个
veth
接口放置在网络名称空间
，然后将另外一个
veth
接口放入带有物理接口的网桥。
这样一来，你的网络名称空间就被桥接到外界了。（我们会将此留给你作为练习。）
当然，我们还能创建出更复杂的拓扑结构，但这个可以使你了解使用
veth pair
连
接网络名
称空间能实现什么功能。
下一节将介绍网络名称空间的实践应用程序：
Linux
容器。
A.4
Linux
容器联网
上一节谈到了
Linux
是如何将网络名称空间作为将网络接口“界定”（或限制）在整个系
统的特定资源子集上的一种手段。换句话说，就是把网络接口隔离在自己的一小块空间
（网络名称空间）里。
Linux
内核还支持其他类型的名称空间 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.