Linux administration : a beginners guide

Format:

Book

Author/Creator:

Soyinka, Wale, Author.

Contributor:

Lane, David

Language:

English

Subjects (All):

Linux.

Operating systems (Computers).

Physical Description:

1 online resource (688 pages)

Edition:

6th edition

Place of Publication:

[Place of publication not identified] McGraw Hill Osborne Media 2012

Language Note:

English

System Details:

text file

Summary:

Essential Linux Management Skills Made Easy Effectively deploy and maintain Linux and other Free and Open Source Software (FOSS) on your servers or entire network using this practical resource. Linux Administration: A Beginner's Guide, Sixth Edition provides up-to-date details on the latest Linux distributions, including Fedora, Red Hat Enterprise Linux, CentOS, Debian, and Ubuntu. Learn how to install and customize Linux, work from the GUI or command line, configure Internet and intranet services, interoperate with Windows systems, and create reliable backups. Performance tuning, security, and virtualization are also covered and real-world examples help you put the techniques presented into practice. Install and configure popular Linux distributions, including the latest versions of Fedora, CentOS, openSUSE, Debian, and Ubuntu Administer Linux servers from the GUI or from the command line (shell) Manage users, permissions, folders, and native FOSS applications Compile, tune, upgrade, and customize the latest Linux kernel 3.x series Work with proc, SysFS, and cgroup file systems Understand and manage the Linux TCP/IP networking stack and services for both IPv4 and IPv6 Build robust firewalls, and routers using Netfilter and Linux Create and maintain print, e-mail, FTP, and web servers Use LDAP or NIS for identity management Set up and administer DNS, POP3, IMAP3, and DHCP servers Use GlusterFS, NFS, and Samba for sharing and distributing file system resources Explore and implement Linux virtualization technologies using KVM

Contents:

Cover

Linux Administration A Beginner's Guide

About the Author

About the Technical Editor

At a Glance

Contents

Acknowledgments

Introduction

Who Should Read This Book

What's in This Book?

Part I: Introduction, Installation, and Software Management

Part II: Single-Host Administration

Part III: Networking and Security

Part IV: Internet Services

Part V: Intranet Services

Part VI: Appendixes

Updates and Feedback

Chapter 1: Technical Summary of Linux Distributions

Linux: The Operating System

What Is Open Source Software and GNU All About?

What Is the GNU Public License?

Upstream and Downstream

The Advantages of Open Source Software

Understanding the Differences Between Windows and Linux

Single Users vs. Multiple Users vs. Network Users

The Monolithic Kernel and the Micro-Kernel

Separation of the GUI and the Kernel

The Network Neighborhood

The Registry vs. Text Files

Domains and Active Directory

Summary

Chapter 2: Installing Linux in a Server Configuration

Hardware and Environmental Considerations

Server Design

Uptime

Methods of Installation

Installing Fedora

Project Prerequisites

The Installation

Initialize the Disk

Configure the Network

Time Zone Configuration

Set the Root Password

Storage Configuration

Configure the Boot Loader

Select the Package Group

Initial System Configuration

Create a User

Date and Time Configuration

Hardware Profile

Log In

Installing Ubuntu Server

Start the Installation

Set up Users, Passwords

Configure the Time Zone

Set up the Disk Partition

Other Miscellaneous Tasks

Chapter 3: Managing Software

The Red Hat Package Manager

Managing Software Using RPM.

Querying for Information the RPM Way (Getting to Know One Another)

Installing Software with RPM (Moving in Together)

Uninstalling Software with RPM (Ending the Relationship)

Other Things RPM Can Do

GUI RPM Package Managers

Fedora

openSUSE and SLE

The Debian Package Management System

APT

Software Management in Ubuntu

Querying for Information

Installing Software in Ubuntu

Removing Software in Ubuntu

GUI Package Managers for Debian-Based Systems (Ubuntu)

Compile and Install GNU Software

Getting and Unpacking the Package

Looking for Documentation

Configuring the Package

Compiling the Package

Installing the Package

Testing the Software

Cleanup

Common Problems When Building from Source Code

Problems with Libraries

Missing Configure Script

Broken Source Code

Chapter 4: Managing Users and Groups

What Exactly Constitutes a User?

Where User Information Is Kept

The /etc/passwd File

Username Field

Password Field

User ID Field (UID)

Group ID Field (GID)

GECOS

Directory

Shell

The /etc/shadow File

The /etc/group File

User Management Tools

Command-Line User Management

useradd

usermod

userdel

groupadd

groupdel

groupmod

GUI User Managers

Users and Access Permissions

Understanding SetUID and SetGID Programs

Pluggable Authentication Modules

How PAM Works

PAM's Files and Their Locations

Configuring PAM

An Example PAM Configuration File

The "Other" File

D'oh! I Can't Log In!

Debugging PAM

A Grand Tour

Creating Users with useradd

Creating Groups with groupadd

Modifying User Attributes with usermod

Modifying Group Attributes with groupmod

Deleting Users and Groups with userdel and groupdel

Chapter 5: The Command Line.

An Introduction to BASH

Job Control

Environment Variables

Printing Environment Variables

Setting Environment Variables

Unsetting Environment Variables

Pipes

Redirection

Command-Line Shortcuts

Filename Expansion

Environment Variables as Parameters

Multiple Commands

Backticks

Documentation Tools

The man Command

The texinfo System

Files, File Types, File Ownership, and File Permissions

Normal Files

Directories

Hard Links

Symbolic Links

Block Devices

Character Devices

Named Pipes

Listing Files: ls

Change Ownership: chown

Change Group: chgrp

Change Mode: chmod

File Management and Manipulation

Copy Files: cp

Move Files: mv

Link Files: ln

Find a File: find

File Compression: gzip

bzip2

Create a Directory: mkdir

Remove a Directory: rmdir

Show Present Working Directory: pwd

Tape Archive: tar

Concatenate Files: cat

Display a File One Screen at a Time: more

Disk Utilization: du

Show the Directory Location of a File: which

Locate a Command: whereis

Disk Free: df

Synchronize Disks: sync

Moving a User and Its Home Directory

List Processes: ps

Show an Interactive List of Processes: top

Send a Signal to a Process: kill

Signals

Security Issues

Examples Using the kill Command

Miscellaneous Tools

Show System Name: uname

Who Is Logged In: who

A Variation on who: w

Switch User: su

Editors

vi

emacs

joe

pico

Chapter 6: Booting and Shutting Down

Boot Loaders

GRUB Legacy

Stage 1

Stage 2

Conventions Used in GRUB

Installing GRUB

Backing Up the MBR

Installing GRUB Legacy from the GRUB Shell

USB GRUB Legacy Boot Disk

Installing GRUB Legacy on the MBR Using a USB GRUB Legacy Disk

Configuring GRUB Legacy

Adding a New Kernel to Boot with GRUB Legacy.

GRUB 2

LILO

Bootstrapping

Kernel Loading

Kernel Execution

The init Process

rc Scripts

Writing Your Own rc Script

Creating the carpald.sh Script

Creating the Startup Script

Enabling and Disabling Services

Disabling a Service

Odds and Ends of Booting and Shutting Down

fsck!

Booting into Single-User ("Recovery") Mode

Chapter 7: File Systems

The Makeup of File Systems

i-Nodes

Block

Superblocks

ext3

ext4

Extents

Online Defragmentation

Larger File System and File Size

Btrfs

Which File System Should You Use?

Managing File Systems

Mounting and Unmounting Local Disks

Using the mount Command

Unmounting File Systems

When the File System Is in Use

The /etc/fstab File

Using fsck

What If I Still Get Errors?

The lost+found Directory

Adding a New Disk

Overview of Partitions

Traditional Disk and Partition Naming Conventions

Volume Management

Creating Partitions and Logical Volumes

Creating a Partition

Creating a Physical Volume

Assigning a Physical Volume to a Volume Group

Creating a Logical Volume (LV)

Creating File Systems

Chapter 8: Core System Services

The init Daemon

upstart: Die init. Die Now!

The /etc/inittab File

The telinit Command

systemd

systemd's Role

The systemd Edge

How systemd Works

xinetd and inetd

The /etc/xinetd.conf File

Variables and Their Meanings

Examples: A Simple Service Entry and Enabling/Disabling a Service

Enabling/Disabling the Echo Service

The Logging Daemon

Invoking rsyslogd

Configuring the Logging Daemon

Log Message Classifications

Format of /etc/rsyslog.conf

rsyslogd Templates

rsyslogd Rules

Sample /etc/rsyslog.conf File

The cron Program

The crontab File

Editing the crontab File

Summary.

Chapter 9: The Linux Kernel

What Exactly Is a Kernel?

Finding the Kernel Source Code

Getting the Correct Kernel Version

Unpacking the Kernel Source Code

Building the Kernel

Preparing to Configure the Kernel

Kernel Configuration

Compiling the Kernel

Installing the Kernel

Booting the Kernel

The Author Lied-It Didn't Work!

Patching the Kernel

Downloading and Applying Patches

If the Patch Worked

If the Patch Didn't Work

Chapter 10: Knobs and Dials: Virtual File Systems

What's Inside the /proc Directory?

Tweaking Files Inside of /proc

Some Useful /proc Entries

Enumerated /proc Entries

Common proc Settings and Reports

SYN Flood Protection

Issues on High-Volume Servers

Debugging Hardware Conflicts

SysFS

cgroupfs

Chapter 11: TCP/IP for System Administrators

The Layers

Packets

TCP/IP Model and the OSI Model

Layer 1 (The Wire)

Layer 2 (Ethernet)

Layer 3 (IP)

Layer 4 (TCP, UDP)

Layers 5-7 (HTTP, SSL, XML)

Headers

Ethernet

Viewing Ethernet Headers

IP (IPv4)

tcpdump and IP

TCP

UDP

A Complete TCP Connection

Opening a Connection

Transferring Data

Closing the Connection

How ARP Works

The ARP Header: ARP Works with Other Protocols, Too!

Bringing IP Networks Together

Hosts and Networks

Subnetting

Netmasks

Static Routing

Routing Tables

Limitations of Static Routing

Dynamic Routing with RIP

RIP's Algorithm (and Why You Should Use OSPF Instead)

Digging into tcpdump

A Few General Notes

Wireshark (The Tool Formerly Known as Ethereal)

Reading and Writing Dumpfiles

Capturing More or Less per Packet

Performance Impact

Don't Capture Your Own Network Traffic

Why Is DNS Slow?

Graphing Odds and Ends.

Graphing Initial Sequence Numbers.

Notes:

Bibliographic Level Mode of Issuance: Monograph

Description based on publisher supplied metadata and other sources.

OCLC:

1024272559