Guide Linux Troubleshooting for System Administrators and Power Users

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Linux Troubleshooting for System Administrators and Power Users [James Kirkland, David Carmichael, Christopher L. Tinker, Gregory L. Tinker] on Amazon. com.
Table of contents

Advanced Qt Programming paperback Mark Summerfield. Other books in this series. Mobile Applications Heather Schneider. Modern Cryptography Wenbo Mao. Electronic Test Instruments Robert A. Mobilize Your Enterprise Patrick Brans. The Art of Measurement Ronald Potter. Halting the Hacker Donald L. Itanium Architecture for Programmers James S. Information Security Donald L. IP Telephony Bill Douskalis. Back cover copy Linux is a fast-growing operating system with power and appeal, and enterprises worldwide are quickly adopting the system to utilize its benefits.

Finally, there is a complete reference for troubleshooting Linux-quickly! This book not only teaches you how to troubleshoot Linux, it shows you how the system works-so you can attack any problem at its root. A troubleshooting guide for all Linux users: He has been working with UNIX variants for more than ten years.

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He earned a bachelors degree in computer science from West Virginia University in and has been helping customers resolve their IT problems ever since. Greg began his career while at Bellsouth in Atlanta, Georgia. Both Chris and Greg joined Hewlett-Packard in Chris resides with his wife, Bonnie, and Greg resides with his wife, Kristen, in Alpharetta, Georgia.

We explain how to force a panic when Linux is in a non-interruptible hang. An OS panic is a voluntary shutdown of the kernel in response to something unexpected. We discuss how to obtain a panic dump from Linux. The IA64 architecture dump mechanism is also explained.


Performance Tools In Chapter 3, we explain how to use some of the most popular Linux performance tools including top, sar, vmstat, iostat, and free. The examples show common syntaxes and options. Every system administrator should be familiar with these commands. Performance Chapter 4 discusses different approaches to isolating a performance problem. As with the majority of performance issues, storage always seems to draw significant attention.

The goal of this chapter is to provide a quick understanding of how a storage device should perform and easy ways to get a performance measurement without expensive software. In addition to troubleshooting storage performance, we touch on CPU bottlenecks and ways to find such events. An essential feature of an enterprise computing platform is being able to access storage on the SAN.

This chapter provides a detailed walkthrough and examples of installing and configuring Fibre Channel cards. We discuss driver issues, how the device files work, and how to add LUNs. We explain the partition table, and a lot of examples are given so that the reader will understand how the disk is carved up into extended and logical partitions. Many scenarios are provided explaining common disk and filesystem problems and their solutions. After reading this chapter, the reader will understand not only what MBA, LBA, extended partitions, and all the other buzzwords mean, but also how they look on the disk and how to fix problems related to them.

Device Failure and Replacement This chapter explains identifying problems with hardware devices and how to fix them.

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We begin with a discussion of supported devices. Whether a device is supported by the Linux distribution is a good thing to know before spending a lot of time trying to get it working. Next we show where to look for indications of hardware problems. The reader will learn how to decipher the hexadecimal error messages from dmesg and syslog. We explain how to use the lspci tool for troubleshooting. When the error is understood, the next goal is to resolve the device problem.

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We demonstrate techniques for determining what needs to be done to fix device issues including SAN devices. A system administrator should know what happens when a process is created to troubleshoot process issues. This chapter explains process creation and provides a foundation for troubleshooting.

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Linux is a multithreading kernel. The reader will learn how multithreading works and what heavyweight and lightweight processes are. The reader also will learn how to troubleshoot a process that seems to be hanging and not doing any work. Core dumps are also covered. A Practical Guide to Ubuntu Linux. Free as in Freedom [Paperback]. Cisco Unified Customer Voice Portal. Windows Server Administration Fundamentals. Ansible Configuration Management - Second Edition. Puppet 4 Essentials - Second Edition. Optimizing Hadoop for MapReduce. Exam Ref Networking with Windows Server Elders and Deacons and Saints, Oh My!

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