Linux内核崩溃指南：全面解析与配置

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《Linux Kernel Crash Debugging Book》(简称LKCD)是一本深入解析Linux内核崩溃调试的实用指南，由Igor Ljubuncic aka Dedoimedo撰写。本书旨在提供所有必要的知识，帮助读者理解和解决Linux系统内核崩溃问题，从而提高系统的稳定性和故障排查能力。第1章是介绍，它阐述了LKCD的工作原理。分为两个主要阶段：阶段1涉及理解崩溃发生的基本原理，包括可能的原因（如内存错误、驱动程序故障或硬件问题）；阶段2则侧重于如何通过收集和分析崩溃日志和核心转储文件来定位问题。这个阶段的内容涵盖了如何设置合适的内核崩溃捕获工具，以便在系统出现问题时自动保存核心转储文件。第2章介绍了LKCD的安装过程，确保读者知道如何在Linux系统上安装并配置所需的软件和依赖项。这包括检查和安装必要的包，如调试工具和系统监控工具。第3章详细讲解了本地核心转储的配置步骤，涉及到设置dump设备、指定转储目录、控制转储级别、添加压缩选项以及配置额外的参数。这一部分强调了确保系统在遇到异常时能正确保存核心转储文件的重要性。第4章扩展到网络环境下的核心转储，探讨了如何在服务器上设置网络转储服务，配置dump_flags、source_port，以及确保网络用户能够访问转储目录，以便远程诊断。第5章专门讲解如何配置网络转储服务器，包括必要的软件安装、配置文件调整，以及安全设置，如确保转储目录的权限设置正确，以便数据传输顺利进行。《Linux Kernel Crash Debugging Book》是一本非常实用的参考资源，适合系统管理员、开发者和深度技术爱好者，它不仅教会如何防止和应对Linux内核崩溃，还提供了深入分析和修复此类问题的具体方法和策略。通过阅读这本书，读者将增强对Linux内核底层工作的理解，并提升处理系统故障的效率。

Foreword

Writing books is not a new experience for me. I’ve been doing it since the age of 10.

Most of these books gather proverbial dust on this or that hard disk, others are being

pampered for limelight, others yet have been abandoned. There’s no better place to

announce the demise of one project as at the birth of another. As you may have guessed,

my super-extensive mother-of-all Linux topics book is not going to be published any time

soon, as simple system administration no longer excites me. The single Apache chapter

remains a proof-of-concept poetic demonstration, an orphan of what might have been.

Instead, I have started casting my eye toward more advanced, more complex topics. Like

Linux crash analysis. This is a subject that has lots of unanswered mail threads and plain

text documents scattered all over the place, inaccessible to almost everyone, save the

tiny percentage of super geeks. Whether this should be so or not makes no diﬀerence.

There comes a need, there comes a man with an idea, and that man writes a book.

My personal and professional interest in the last three years has taken me down the path

of Linux kernel secrets, all the way into assembly code, where magic happens. I felt the

desire to learn what happens in the heart of the system. Like most technical topics, there

was some information to be found online, but it was cryptic, ambiguous, partial, nerdy,

or just not there at all. Dedoimedo is a reﬂection of how things ought to be after all.

I’m writing guides and tutorials and reviews the way I perceive the world - friendly and

accessible toward normal human beings. In a way, every article is an attempt to make

things a little clearer, a little more understandable. Step by step, nothing omitted, you

know the mantra.

Linux kernel crash is no exception. If you’re familiar with my website, you know this book

is just a compilation of seven in-depth tutorials already posted and available freely for

everyone’s use. But there’s a diﬀerence between some HTML code, scattered around,

and a beautiful stylish book written in L

X. Not much diﬀerence, I admit, but still

worth this fancy foreword.

This book is a product of several factors. First, my ego demands recognition, so I’m

making the best eﬀort of appearing smart in the posh circles. Nothing like a book to

make you look wise and whatnot. Second, the book really makes sense, when you take

the entire crash series into consideration. Starting with crash tools via collection all the

way to analysis, plus some extras and general tips. It’s an entire world, really, and it

belongs inside a single, comprehensive volume. Third, half a dozen Dedoimedo readers

contacted me by mail, asking that I compile my crash material into one document. I did

hint at a possible PDF given popular demand, so here we go.

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如何在Linux系统中配置和执行本地核心转储（core dump）和网络转储（netdump）的流程？

在Linux系统中配置和执行本地核心转储（core dump）和网络转储（netdump）的流程是怎样的？

请详细说明在Linux系统中如何配置和执行本地核心转储（core dump）和网络转储（netdump）的流程。

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