Linux Server Hacks: 100 Industrial-Strength Tips and Tools [NOOK Book]


A competent system administrator knows that a Linux server is a high performance system for routing large amounts of information through a network connection. Setting up and maintaining a Linux server requires understanding not only the hardware, but the ins and outs of the Linux operating system along with its supporting cast of utilities as well as layers of applications software. There's basic documentation online but there's a lot beyond the basics you have to know, and this only comes from people with ...

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Linux Server Hacks: 100 Industrial-Strength Tips and Tools

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A competent system administrator knows that a Linux server is a high performance system for routing large amounts of information through a network connection. Setting up and maintaining a Linux server requires understanding not only the hardware, but the ins and outs of the Linux operating system along with its supporting cast of utilities as well as layers of applications software. There's basic documentation online but there's a lot beyond the basics you have to know, and this only comes from people with hands-on, real-world experience. This kind of "know how" is what we sought to capture in Linux Server Hacks.Linux Server Hacks is a collection of 100 industrial-strength hacks, providing tips and tools that solve practical problems for Linux system administrators. Every hack can be read in just a few minutes but will save hours of searching for the right answer. Some of the hacks are subtle, many of them are non-obvious, and all of them demonstrate the power and flexibility of a Linux system. You'll find hacks devoted to tuning the Linux kernel to make your system run more efficiently, as well as using CVS or RCS to track the revision to system files. You'll learn alternative ways to do backups, how to use system monitoring tools to track system performance and a variety of secure networking solutions. Linux Server Hacks also helps you manage large-scale Web installations running Apache, MySQL, and other open source tools that are typically part of a Linux system.O'Reilly's new Hacks Series proudly reclaims the term "hacking" for the good guys. Hackers use their ingenuity to solve interesting problems. Rob Flickenger is an experienced system administrator, having managed the systems for O'Reilly Network for several years. (He's also into community wireless networking and he's written a book on that subject for O'Reilly.) Rob has also collected the best ideas and tools from a number of other highly skilled contributors.Written for users who already understand the basics, Linux Server Hacks is built upon the expertise of people who really know what they're doing.

This unique and valuable collection of tips, tools, and scripts provides direct, hands-on solutions that can be used by anyone running a network of Linux servers.

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Editorial Reviews

From Barnes & Noble
The Barnes & Noble Review
O’Reilly’s Rob Flickenger has compiled 100 of the world’s best ideas for optimizing Linux servers and system administration -- and, boy, are they ever useful.

Want to improve performance and security by removing unnecessary services and drivers? Track down people (or software) that are hogging disk space? Manage your system resources on a per-process basis? Eliminate setuid/setgid executables that make you susceptible to the ptrace attack? Accelerate compiles? Use makefiles to automate administration? Flickenger covers all that, and much more, in just the first quarter of the book.

Blessed with loads of RAM? Here are hacks that make the most of it. Running IDE drives? Here are hdparm tricks that dramatically improve throughput -- sometimes by as much as 6x to 10x.

You'll find excellent ideas for backup and archiving, copying arbitrary portions of your filesystem using ssh and tar, using rsync to back up incremental filesystem changes, applying pax to make portable archives that can be restored on other Unix systems, backing up your boot sector -- even burning CDs without creating ISO files.

Linux Server Hacks offers nifty solutions for firewalling and IP tunneling; server monitoring (local, network, and Web); CVS and revision control; and scripting. A full quarter of the book covers high-performance delivery of information services -- from BIND to DNS caching, MySQL server tuning to mass web site “ultrahosting.” Chances are, this book will save your organization thousands of dollars. It’ll certainly save you an enormous amount of time and hassle. Bill Camarda

Bill Camarda is a consultant, writer, and web/multimedia content developer. His 15 books include Special Edition Using Word 2000 and Upgrading & Fixing Networks For Dummies®, Second Edition.

Library Journal
Linux continues its surge in popularity-especially in the server market, which appreciates the lower cost and higher stability of this open source option. Red Hat provides basic coverage of one widely used distribution, from setting up a Linux server to setting up intranet services (like DHCP). This guide will be especially useful to network administrators moving from a Windows NT/2000 environment to Red Hat Linux; Linux's differences from Windows are stressed, and a background in NT/2000 network administration is assumed. Quizzes, projects, tips, notes, and summaries make it a good self-study resource. Clear explanations and examples recommend it for all libraries. Server Hacks, the first entry in O'Reilly's new series, contains real-world tips, tools, and scripts for working Linux administrators, allowing them to tweak their servers to maximum effectiveness and resolve common situations with minimal fuss. Hacks are broken down into common tasks, such as server basics (speeding up compiles) or monitoring (What's holding that port open?). Each tip explains why and how it can help maintain server efficiency or solve common problems, with a welcome balance of humor and practicality. Highly recommended. Copyright 2003 Reed Business Information.
From The Critics
Very easy to read. Flickenger has a "conversational" writing style I found easy to parse. If you hang out with Linux geeks very much, you'll recognize his way of communicating and easily assimilate what he has to say. His advice is sound, his skill level high (the same can be said for the other contributors as well). The book's layout and organization made it easy to find specifics and will ensure that it gets used as a reference later on.
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Product Details

  • ISBN-13: 9781449378929
  • Publisher: O'Reilly Media, Incorporated
  • Publication date: 1/20/2003
  • Sold by: Barnes & Noble
  • Format: eBook
  • Edition number: 1
  • Pages: 242
  • Sales rank: 916,877
  • File size: 2 MB

Meet the Author

Flickenger is the sysadmin of the O'Reilly Network.

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Table of Contents

How to Become a Hacker
Server Basics 1
1 Removing Unnecessary Services 3
2 Forgoing the Console Login 6
3 Common Boot Parameters 7
4 Creating a Persistent Daemon with init 8
5 n>&m: Swap Standard Output and Standard Error 10
6 Building Complex Command Lines 12
7 Working with Tricky Files in xargs 15
8 Immutable Files in ext2/ext3 17
9 Speeding Up Compiles 18
10 At Home in Your Shell Environment 19
11 Finding and Eliminating setuid/setgid Binaries 22
12 Make sudo Work Harder 25
13 Using a Makefile to Automate Admin Tasks 27
14 Brute Forcing Your New Domain Name 29
15 Playing Hunt the Disk Hog 29
16 Fun with /proc 31
17 Manipulating Processes Symbolically with procps 34
18 Managing System Resources per Process 35
19 Cleaning Up after Ex-Users 37
20 Eliminating Unnecessary Drivers from the Kernel 39
21 Using Large Amounts of RAM 42
22 hdparm: Fine Tune IDE Drive Parameters 43
Revision Control 46
23 Getting Started with RCS 47
24 Checking Out a Previous Revision in RCS 48
25 Tracking Changes with rcs2log 49
26 Getting Started with CVS 51
27 CVS: Checking Out a Module 54
28 CVS: Updating Your Working Copy 54
29 CVS: Using Tags 55
30 CVS: Making Changes to a Module 56
31 CVS: Merging Files 57
32 CVS: Adding and Removing Files and Directories 57
33 CVS: Branching Development 58
34 CVS: Watching and Locking Files 59
35 CVS: Keeping CVS Secure 60
36 CVS: Anonymous Repositories 61
Backups 63
37 Backing Up with tar over ssh 64
38 Using rsync over ssh 65
39 Archiving with Pax 66
40 Backing Up Your Boot Sector 72
41 Keeping Parts of Filesystems in sync with rsync 73
42 Automated Snapshot-style Incremental Backups with rsync 78
43 Working with ISOs and CDR/CDRWs 84
44 Burning a CD Without Creating an ISO File 85
Networking 87
45 Creating a Firewall from the Command Line of any Server 87
46 Simple IP Masquerading 90
47 iptables Tips & Tricks 91
48 Forwarding TCP Ports to Arbitrary Machines 93
49 Using Custom Chains in iptables 94
50 Tunneling: IPIP Encapsulation 96
51 Tunneling: GRE Encapsulation 98
52 Using vtun over ssh to Circumvent NAT 99
53 Automatic vtund.conf Generator 105
Monitoring 110
54 Steering syslog 110
55 Watching Jobs with watch 113
56 What's Holding That Port Open? 114
57 Checking On Open Files and Sockets with lsof 115
58 Monitor System Resources with top 118
59 Constant Load Average Display in the Titlebar 119
60 Network Monitoring with ngrep 121
61 Scanning Your Own Machines with nmap 123
62 Disk Age Analysis 124
63 Cheap IP Takeover 126
64 Running ntop for Real-Time Network Stats 129
65 Monitoring Web Traffic in Real Time with httptop 131
SSH 139
66 Quick Logins with ssh Client Keys 139
67 Turbo-mode ssh Logins 141
68 Using ssh-Agent Effectively 142
69 Running the ssh-Agent in a GUI 144
70 X over ssh 145
71 Forwarding Ports over ssh 146
Scripting 149
72 Get Settled in Quickly with 149
73 Global Search and Replace with Perl 151
74 Mincing Your Data into Arbitrary Chunks (in bash) 153
75 Colorized Log Analysis in Your Terminal 155
Information Servers 157
76 Running BIND in a chroot Jail 158
77 Views in BIND 9 160
78 Setting Up Caching DNS with Authority for Local Domains 165
79 Distributing Server Load with Round-Robin DNS 167
80 Running Your Own Top-Level Domain 168
81 Monitoring MySQL Health with mtop 169
82 Setting Up Replication in MySQL 172
83 Restoring a Single Table from a Large MySQL Dump 175
84 MySQL Server Tuning 175
85 Using proftpd with a mysql Authentication Source 178
86 Optimizing glibc, linuxthreads, and the Kernel for a Super MySQL Server 180
87 Apache Toolbox 182
88 Display the Full Filename in Indexes 185
89 Quick Configuration Changes with lfDefine 186
90 Simplistic Ad Referral Tracking 188
91 Mimicking FTP Servers with Apache 191
92 Rotate and compress Apache Server Logs 193
93 Generating an SSL cert and Certificate Signing Request 194
94 Creating Your Own CA 196
95 Distributing Your CA to Client Browsers 198
96 Serving multiple sites with the same DocumentRoot 201
97 Delivering Content Based on the Query String Using modörewrite 203
98 Using modöproxy on Apache for Speed 204
99 Distributing Load with Apache RewriteMap 206
100 Ultrahosting: Mass Web Site Hosting with Wildcards, Proxy, and Rewrite 208
Index 213
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