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Linux Server Hacks
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. This 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.
Contents:
How to Become a Hacker Preface Server Basics 1
Removing Unnecessary Services 2
Forgoing the Console Login 3
Common Boot Parameters 4
Creating a Persistent Daemon with init 5
Swap Standard Output and Standard Error 6
Building Complex Command Lines 7
Working with Tricky Files in xargs 8
Immutable Files in ext2/ext3 9
Speeding Up Compiles 10
At Home in Your Shell Environment 11
Finding and Eliminating setuid/setgid Binaries 12
Make sudo Work Harder 13
Using a Makefile to Automate Admin Tasks 14
Brute Forcing Your New Domain Name 15
Playing Hunt the Disk Hog 16
Fun with /proc 17
Manipulating Processes ymbolically with procps 18
Managing System Resources per Process 19
Cleaning Up after Ex-Users 20
Eliminating Unnecessary Drivers from the Kernel 21
Using Large Amounts of RAM 22
hdparm: Fine Tune IDE Drive Parameters Revision Control 23
Getting Started with RCS 24
Checking Out a Previous Revision in RCS 25
Tracking Changes with rcs2log 26
Getting Started with CVS 27
CVS: Checking Out a Module 28
CVS: Updating Your Working Copy 29
CVS: Using Tags 30
CVS: Making Changes to a Module 31
CVS: Merging Files 32
CVS: Adding and Removing Files and Directories 33
CVS: Branching Development 34
CVS: Watching and Locking Files 35
CVS: Keeping CVS Secure 36
CVS: Anonymous Repositories Backups 37
Backing Up with tar over ssh 38
Using rsync over ssh 39
Archiving with Pax 40
Backing Up Your Boot Sector 41
Keeping Parts of Filesystems in sync with rsync 42
Automated Snapshot-Style Incremental Backups with rsync 43
Working with ISOs and CDR/CDRWs 44
Burning a CD Without Creating an ISO File Networking 45
Creating a Firewall from the Command Line of any Server 46
Simple IP Masquerading 47
iptables Tips & Tricks 48
Forwarding TCP Ports to Arbitrary Machines 49
Using Custom Chains in iptables 50
Tunneling: IPIP Encapsulation 51
Tunneling: GRE Encapsulation 52
Using vtun over ssh to Circumvent NAT 53
Automatic vtund.conf Generator Monitoring 54
Steering syslog 55
Watching Jobs with watch 56
What's Holding That Port Open? 57
Checking On Open Files and Sockets with lsof 58
Monitor System Resources with top 59
Constant Load Average Display in the Titlebar 60
Network Monitoring with ngrep 61
Scanning Your Own Machines with nmap 62
Disk Age Analysis 63
Cheap IP Takeover 64
Running ntop for Real-Time Network Stats 65
Monitoring Web Traffic in Real Time with httptop SSH 66
Quick Logins with ssh Client Keys 67
Turbo-mode ssh Logins 68
Using ssh-Agent Effectively 69
Running the ssh-Agent in a GUI 70
X over ssh 71
Forwarding Ports over ssh Scripting 72
Get Settled in Quickly with movein.sh 73
Global Search and Replace with Perl 74
Mincing Your Data into Arbitrary Chunks (in bash) 75
Colorized Log Analysis in Your Terminal Information Servers 76
Running BIND in a chroot Jail 77
Views in BIND 9 78
Setting Up Caching DNS with Authority for Local Domains 79
Distributing Server Load with Round-Robin DNS 80
Runn
Brief Description:
This is a collection of 100 industrial-strength hacks, providing tips and tools that solve practical problems for Linux system administrators. It contains tips, tools and scripts and provides direct, hands-on solutions that can be by anyone running a network of Linux servers.
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