Tru64 UNIX Troubleshooting: Diagnosing and Correcting System Problems
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Table of contents
- Cover
- Contentsvii
- Prefacexi
- Acknowledgmentsxiii
- Chapter 1. Introduction1
- 1.1 Tru64 UNIX History1
- 1.2 Scope2
- 1.3 Organization3
- Chapter 2. Principles and Techniques5
- 2.1 The Troubleshooting Process5
- 2.2 Troubleshooting Techniques15
- 2.3 Troubleshooting Principles22
- 2.4 Summary26
- Chapter 3. Tools and Resources27
- 3.1 System-Level Error-Reporting Facilities28
- 3.2 Process-Level Reporting Facilities49
- 3.3 System Troubleshooting Tools53
- 3.4 Kernel Debugging Tools62
- 3.5 Summary66
- Chapter 4. User Accounts and Security67
- 4.1 User Account Problems67
- 4.2 Security Problems90
- Chapter 5. System Failures101
- 5.1 Boot Failures101
- 5.2 System Crashes119
- 5.3 System Hangs136
- Chapter 6. System Performance145
- 6.1 General Principles146
- 6.2 Memory Resources and Performance151
- 6.3 CPU Resources and Performance160
- 6.4 I/O Resources and Performance163
- 6.5 Checking System Performance167
- Chapter 7. Networking173
- 7.1 Networking Hardware Problems174
- 7.2 Networking Software Issues183
- 7.3 Summary200
- Chapter 8. Storage203
- 8.1 Disks204
- 8.2 Tapes211
- 8.3 Logical Storage Manager216
- 8.4 LSM Performance225
- 8.5 Summary226
- Chapter 9. File Systems227
- 9.1 Generic File Systems Issues227
- 9.2 AdvFS236
- 9.3 UFS246
- 9.4 Summary249
- Chapter 10. System Configuration251
- 10.1 Installation Problems252
- 10.2 Installing Patches260
- 10.3 Kernel Configuration260
- 10.4 Timezone Issues270
- 10.5 Summary274
- Chapter 11. System Administration277
- 11.1 Software Licenses277
- 11.2 Printing284
- 11.3 The cron Facility294
- Chapter 12. Display Problems299
- 12.1 GeneraI Troubleshooting Techniques299
- 12.2 No Display301
- 12.3 Incorrect Display Appearance305
- 12.4 CDE Problems307
- A Electronic Resources311
- A.1 Mailing Lists311
- A.2 USENET Newsgroups313
- A.3 Web Resources313
- B Recommended Reading319
- B.1 UNIX System Administration319
- B.2 File Systems and Storage319
- B.3 Backup and Recovery319
- B.4 TruCluster320
- B.5 Networking320
- B.6 Sendmail320
- B.7 UNIX Internals320
- B.8 Security321
- B.9 XWindows321
- Index323
Dealing with system problems—from user login failures to server crashes--is a critical part of a system administrator's job. A down system can cost a business thousands of dollars per minute. But there is little or no information available on how to troubleshoot and correct system problems; in most cases, these skills are learned in an ad-hoc manner, usually in the pressure-cooker environment of a crisis. This is the first book to address this lack of information.
The authors (both experienced Tru64 UNIX support engineer for Compaq) systematically present the techniques and tools needed to find and fix system problems. The first part of the book presents the general principles and techniques needed in system troubleshooting. These principles and techniques are useful not only for UNIX system administrators, but for anyone who needs to find and fix system problems. After this foundation, the authors describe troubleshooting tools used in the UNIX environment. The remainder of the book covers specific areas of the Tru64 UNIX operating system in detail: listing common problems, their causes, how to detect them, and how to correct them. Each chapter includes a "Before You Call Support" section that details the most important things to check and correct before it's necessary to call Compaq technical support. The authors also include decision trees to help the reader systematically isolate particular problem types.
· "Before You Call Tech Support" sections
· Tables and diagrams for quick access to precise data
· Decision trees to help choose the best way to troubleshoot a particular problem
The authors (both experienced Tru64 UNIX support engineer for Compaq) systematically present the techniques and tools needed to find and fix system problems. The first part of the book presents the general principles and techniques needed in system troubleshooting. These principles and techniques are useful not only for UNIX system administrators, but for anyone who needs to find and fix system problems. After this foundation, the authors describe troubleshooting tools used in the UNIX environment. The remainder of the book covers specific areas of the Tru64 UNIX operating system in detail: listing common problems, their causes, how to detect them, and how to correct them. Each chapter includes a "Before You Call Support" section that details the most important things to check and correct before it's necessary to call Compaq technical support. The authors also include decision trees to help the reader systematically isolate particular problem types.
· "Before You Call Tech Support" sections
· Tables and diagrams for quick access to precise data
· Decision trees to help choose the best way to troubleshoot a particular problem