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This chapter revisits some aspects we already described, with a different perspective: instead of installing one single computer, we will study mass-deployment systems; instead of creating RAID or LVM volumes at install time, we'll learn to do it by hand so we can later revise our initial choices. Finally, we will discuss monitoring tools and virtualization techniques. As a consequence, this chapter is more particularly targeting professional administrators, and focuses somewhat less on individuals responsible for their home network.
SourceTranslationState
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Monitoring
监控
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Virtualization
虚拟化
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Xen
Xen
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LXC
LXC
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Advanced Administration
高级管理
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This chapter revisits some aspects we already described, with a different perspective: instead of installing one single computer, we will study mass-deployment systems; instead of creating RAID or LVM volumes at install time, we'll learn to do it by hand so we can later revise our initial choices. Finally, we will discuss monitoring tools and virtualization techniques. As a consequence, this chapter is more particularly targeting professional administrators, and focuses somewhat less on individuals responsible for their home network.
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RAID and LVM
RAID 和 LVM
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<xref linkend="installation" /> presented these technologies from the point of view of the installer, and how it integrated them to make their deployment easy from the start. After the initial installation, an administrator must be able to handle evolving storage space needs without having to resort to an expensive reinstallation. They must therefore understand the required tools for manipulating RAID and LVM volumes.
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RAID and LVM are both techniques to abstract the mounted volumes from their physical counterparts (actual hard-disk drives or partitions thereof); the former secures the data against hardware failure by introducing redundancy, the latter makes volume management more flexible and independent of the actual size of the underlying disks. In both cases, the system ends up with new block devices, which can be used to create filesystems or swap space, without necessarily having them mapped to one physical disk. RAID and LVM come from quite different backgrounds, but their functionality can overlap somewhat, which is why they are often mentioned together.
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<emphasis>PERSPECTIVE</emphasis> Btrfs combines LVM and RAID
<emphasis>观点</emphasis> Btrfs 融合 LVM 和 RAID
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While LVM and RAID are two distinct kernel subsystems that come between the disk block devices and their filesystems, <emphasis>btrfs</emphasis> is a new filesystem, initially developed at Oracle, that purports to combine the featuresets of LVM and RAID and much more. It is mostly functional, and although it is still tagged “experimental” because its development is incomplete (some features aren't implemented yet), it has already seen some use in production environments. <ulink type="block" url="http://btrfs.wiki.kernel.org/" />

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Glossary

Source Translation
and
BACK TO BASICS 基本知识
collection of tools 工具集
Installing 安装
system 系统
target 对象
TOOL 工具

Source information

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xml-text
Source string age
4 years ago
Translation file
zh-CN/​12_advanced-administration.po, string 10
String priority
Medium