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
｜
415
用
yum repolist
来验证仓库是否已被添加。然而，
Fedora
在默认的
Fedora
仓库中附带了
OVS
包，无须再添加或启用额外的仓库。
获得可用的包后，要想在
RHEL/CentOS/Fedora
中安装
OVS
，只需执行
yum install
就可
以安装
openvswitch
包。
注意，到目前为止，
RHEL/CentOS/Fedora
并未提供可以从
OVS
树安装内核模块的包
。如
果需要内核模块，则只能手动编译并安装。考虑到手动编译和安装内核模块是一个相当艰
深的话题，本书不打算在此讨论。不过，网上有很多可用的指南手册。
安装好
OVS
，就可以进入下一节了：配置
OVS
。
A.5.2
配置
OVS
OVS
有多种配置方式：既可以使用
OVS
专用的命令行工具，也可以利用
Linux
网络配置
脚本的
OVS
集
成（
Debian/Linux
中的
/etc/network/interfaces
和
RHEL/CentOS/Fedora
中的
/etc/sysconfig/network-scripts
）
。本节重点关注
OVS
专用的命令行工具。原因在于为了使配
置持久化，
OVS
并未
遵循
Linux
配置文件编辑的一般约定。
没错，使用
OVS
专用的命令行工具对
OVS
做出的改动才是持久的
。
OVS
维护着自己的配
置数据库，
OVS
命令行工具用于操作数据库
。当系统重启时，
OVS
会从配置数据库中重
新读取其配置。因此，使用
OVS
命令行工具对
OVS
所做的每一处改动都是持久的
。这是
OVS
与第
3
章和本附录中所讨论的许多其他网络配置的关键区别。 ...
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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.