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BOOK FOUNDATIONS OF CENTOS LINUX
SUMMARY
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Items Found: 551
- Chapter 1: Installation 1
- Chapter 2: BASH 31
- Chapter 3: Client/Host Configuration 55
- Chapter 4: Data Storage Management 71
- Chapter 5: User Management 87
- Chapter 6: X Window System 105
- Chapter 7: Package Management 133
- Chapter 8: Basic Linux Security 153
- Chapter 10: Network Security 203
- Chapter 11: Network Services 227
- Chapter 12: Open Source Databases 261
- Chapter 13: Linux Web Services 289
- Chapter 14: File Sharing Services 313
- Chapter 15: Linux Mail Servers 335
- Chapter 16: Directory Services 373
- Chapter 17: The Linux Kernel 415
- Chapter 18: Linux Virtualization 435
- Chapter 19: Linux Troubleshooting 457
- Index 471
- Introduction
- Chapter 1: Installation 1
- Preinstallation Steps 1
- Installation 3
- Troubleshooting 29
- Summary 30
- Chapter 2: BASH 31
- Working with the Command-Line Interface 31
- Identifying the Working User 32
- The Linux Filesystem 33
- Directory Management 35
- Listing the contents of a Directory 36
- Traversing Directories 39
- Absolute and Relative Paths 39
- Creating Directories 40
- Renaming and Moving Files 40
- Deleting Directories and Files 41
- Creating and Viewing Text Files 42
- Viewing the contents of a File 44
- Text Processing 45
- Standard I/O Devices 46
- Redirection 47
- Piping 47
- Getting Help 48
- Environment Variables 51
- Creating and Running Your Own Script 52
- Summary 54
- Chapter 3: Client/Host Configuration 55
- The Boot Process 55
- The Boot Loader 55
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- Kernel, Init, and Runlevels 60
- Services 62
- Keyboard Settings 63
- Language Settings 64
- Date and Time Settings 65
- Network Settings 67
- Graphics Settings 68
- Printer Settings 69
- Summary 70
- Chapter 4: Data Storage Management 71
- Provisioning a New Hard Drive 71
- Partitioning a Disk Using RAID 77
- Understanding RAID Types and Levels 78
- RAID 0 78
- RAID 1 78
- RAID 5 79
- Checking on RAID 81
- Partitioning with LVM 81
- Understanding How LVM Works 82
- Volume Groups 83
- Physical Volumes 83
- Logical Volumes 84
- Making Sure Your Volumes Work 85
- Finding More Information on LVM 85
- Summary 85
- Chapter 5: User Management 87
- Managing Users and Groups with the Graphical Interface 87
- Adding a User 87
- Changing User Properties 89
- Deleting a User 91
- Adding a Group 91
- Changing Group Properties 92
- Deleting a Group 93
- User Management on the Command Line 93
- Adding a User 94
- Changing User Properties 94
- Deleting a User 95
- Adding a Group 96
- Changing Group Properties 96
- Deleting a Group 96
- Implementing Disk Quotas 98
- Enabling User and Group Quotas on a Filesystem 99
- Setting Up the Quota Files 99
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- Setting Up Quotas 100
- Setting Grace Periods 101
- Managing Quotas for Groups 101
- Enabling Quotas 101
- Reporting on Quotas 101
- Setting Resource Limits 102
- Summary 103
- Chapter 6: X Window System 105
- X.Org 106
- xorg.conf 106
- The Keyboard Section 107
- The Device Section 108
- The Screen Section 108
- The ServerLayout Section 110
- Making a New xorg.conf File 111
- The GNOME Desktop 111
- Top Panel 112
- Applications 113
- Places 115
- System 117
- Customizing Menus 118
- Launchers 120
- Separator, Update, Clock, and Sound Applet 121
- Bottom Panel 121
- XDMCP Remote Connections 122
- GDM Configuration 123
- Reloading Options with gdmflexiserver 125
- Using XDMCP with GDM 125
- Requesting an X Session with XDMCP 126
- XDMCP with X Query 126
- XDMCP with Xnest 128
- X with SSH 130
- Summary 131
- Chapter 7: Package Management 133
- RPM 133
- The RPM Filename Convention 134
- The rpm Command 135
- Installing a Package 135
- Signed Packages 136
- Importing Keys 136
- Verifying Packages 137
- Adding More Output 137
- Package Dependencies 138
- Upgrading a Package 139
- Removing a Package 140
- Querying a Package 141
- Information and File contents of a Package 141
- Source RPMs 142
- The Spec File 143
- The rpmbuild Command 144
- Building a Binary Package from a Source Package 144
- YUM 145
- Installing Packages with YUM 146
- Removing Packages with YUM 146
- Updating Packages with YUM 147
- Searching Packages with YUM 148
- Adding Sources for YUM 148
- Creating Repositories for YUM 150
- Summary 151
- Chapter 8: Basic Linux Security 153
- System Logger 153
- Using syslog.conf 154
- Selectors 155
- Actions 157
- Detecting Intruders with the System Logger 158
- Automating Tasks with cron 160
- Using crontab 161
- Using cron.allow and cron.deny 161
- Working with the crontab File 161
- The crontab Task 161
- Browsing Available Tasks 163
- Removing Tasks 163
- Pluggable Authentication Modules 163
- Understanding PAM Rules and Configuration Files 165
- servicename 166
- Management Groups 167
- Control 167
- modulepath 168
- Testing PAM 168
- Testing pam_time.so with crond 169
- Finding Other PAM Modules 170
- Summary 170
- Chapter 9: Advanced Security 171
- Using Digital Certificates 171
- Creating Certificates 172
- Deploying Certificates 176
- ix
- Configuration Files 176
- Intermediate Certificates 178
- Certificate File Formats 178
- Signing Your Own Certificates 179
- Go Wild 181
- Intrusion Detection 181
- Monitoring the filesystem with RPM 182
- Monitoring the Filesystem with AIDE 185
- Monitoring the Network with Netfilter 188
- Security Enhanced Linux 191
- Why Use SELinux 192
- Enabling and Disabling SELinux 192
- SELinux Policy 193
- Drilling Down on Context 194
- Booleans 196
- Access Vectors 199
- Interactive Users 200
- Summary 201
- Chapter 10: Network Security 203
- The Firewall 203
- A Basic Firewall 203
- An Advanced Firewall 207
- How netfilter Works 207
- Viewing the Current Firewall 209
- Building netfilter Rules 211
- Using CentOS as a Router 216
- Using netfilter for IP Masquerading 217
- Handling Complex Protocols with netfilter 218
- tcp_wrappers 218
- Centralized Logging 222
- Configuring the Server to Receive Logs 225
- Configuring the Client to Send Logs 225
- Summary 226
- Chapter 11: Network Services 227
- OpenSSH 227
- The OpenSSH Configuration File 227
- Connecting to the OpenSSH Server 228
- Copying Files Securely with scp 229
- OpenSSH Keys 229
- OpenSSH Fingerprints 230
- Getting the Fingerprint Value 230
- The known_hosts File 231
- Making Your Own Keys 231
- x
- The DHCP Server 231
- Setting Up the DHCP Server 232
- The DHCP Configuration File 233
- Assigning Fixed Addresses 234
- Organizing with Groups 235
- The NTP Server 236
- Client-Server Mode 238
- Symmetric Active/Passive Mode 238
- Broadcast Mode 239
- ntpq 240
- DNS 240
- Name Servers and Zones 242
- Name Resolution 242
- BIND Utilities 243
- rndc-confgen 243
- rndc 243
- named 243
- BIND Configuration Files 243
- The contents of rndc.conf 245
- The contents of named.conf 246
- Caching DNS 246
- The hints File 246
- dig 247
- nslookup 248
- Configuring a Caching DNS 248
- Configuring a Forwarder 251
- Configuring a Slave DNS 251
- Configuring a Master DNS 252
- Reverse Lookup 255
- The Squid Web Caching Server 256
- Installing Squid 256
- The Squid Main Configuration File 256
- The visible_hostname directive 256
- The cache_dir directive 257
- ACLs and ACL-operators 258
- Adding ACLs and ACL-operators 258
- How ACL-operators Work 259
- Talking to Squid Peers 259
- More Squid 260
- Summary 260
- Chapter 12: Open Source Databases 261
- ACID 261
- MySQL 262
- Setting Up MySQL 263
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- Running the MySQL Server 264
- MySQL Users 264
- MySQL Monitor 264
- Securing the MySQL Root User 265
- Creating a Database 266
- Removing a Database 267
- Adding a User 267
- Removing a User 267
- Granting Privileges 268
- Removing Privileges 269
- Getting a List of Available Databases 269
- Creating Database Backups 269
- Restoring Databases Using Backups 270
- Restoring the toys Database 271
- Customizing the MySQL Server Configuration 271
- PostgreSQL 272
- Setting up PostgreSQL 272
- Starting PostgreSQL 273
- PostgreSQL Interactive Terminal 273
- Using the Interactive Terminal 273
- PostgreSQL Roles 274
- Creating a Role 274
- Removing a User 275
- Creating a Database 275
- Dropping a Database 275
- PostgreSQL Privileges 275
- Granting Privileges to Objects 276
- Revoking Privileges on Objects 276
- Changing Role Attributes 277
- Getting the List of Databases 277
- Creating Database Backups 278
- Restoring a Database 278
- Configuring PostgreSQL 279
- pg_hba.conf 279
- CRUD and Databases 280
- Creating 281
- Verifying the Newly Created Tables 282
- Viewing the Structures of the Tables 283
- Adding Entries to the Table 283
- Reading 284
- Updating 285
- Dropping Entries from a Table 286
- Summary 287
- Chapter 13: Linux Web Services 289
- The Role of a Web Server 289
- Apache Web Server 290
- Setting Up Apache 290
- Testing Apache 290
- Apache Server Directories 291
- The Apache Configuration File 293
- Apache Configuration File Sections 293
- Commonly Used Directives 294
- Section 1: Global Environment 294
- Section 2: Main Server Configuration 295
- Distributed Configuration Files 297
- DirectoryIndex 298
- Alias 298
- ScriptAlias 298
- Creating Another Document and cgi-bin Directory 299
- Virtual Hosts 302
- IP-Based and Name-Based Virtual Hosting 303
- The VirtualHost Directive 304
- Configuring Name-Based Virtual Hosting 304
- Adding PHP to Apache 308
- Secure Apache with SSL 309
- Securing with OpenSSL 310
- Startup Without a Passphrase 311
- Summary 312
- Chapter 14: File Sharing Services 313
- Very Secure FTP Daemon 313
- Configuring vsftpd 313
- vsftpd.conf 313
- ftpusers 314
- user_list 314
- Testing vsftpd 314
- NFS 315
- Configuring NFS 316
- Sharing a Directory Using NFS 317
- Sharing Directories Using NFS Daemons 318
- Mounting a Shared Directory As the Client 318
- Unmounting a Shared Directory as the Client 319
- Using exportfs 319
- Mounting Shared Directories at Boot Time 320
- Setting Up a Samba Server 321
- Installing Samba 322
- Configuring Samba 322
- lmhosts 322
- smbusers 322
- smb.conf 323
- Configuring Stand-Alone Server Options 323
- server string 323
- netbios name 324
- passdb backend 324
- Adding a Samba User 324
- Testing the Samba Stand-Alone Server 325
- Adding Shares 326
- Sharing a Printer 328
- Preparing the Printer to Pass Print Data in Raw Form 329
- Configuring Samba to Share a Printer 332
- Installing the Samba Printer to the Windows Client 333
- Summary 334
- Chapter 15: Linux Mail Servers 335
- Basic Email Concepts 335
- The Mail User Agent 336
- Mail Transfer Agent 336
- Mail Delivery Agent 337
- POP3 and IMAP 337
- Sendmail 338
- Sending Email with Sendmail 339
- Checking Mail with the mail Command 339
- sendmail.mc 342
- sendmail.cf 344
- The Sendmail Administrative Configuration Files 345
- local-host-names 345
- aliases 345
- access 346
- The trusted-users File 348
- The virtusertable File 348
- mailertable 349
- Postfix 349
- Installing Postfix 350
- Switching MTAs 350
- Sending Email with Postfix 351
- The Postfix Main Configuration File 351
- Postfix Administrative Configuration Files 354
- access 354
- aliases 355
- virtual 356
- transport 356
- generic 356
- canonical 357
- relocated 357
- Mail Servers and DNS 358
- Dovecot 359
- Installing Dovecot 359
- The dovecot.conf Configuration File 359
- Configuration Options 360
- protocols 360
- ssl_cert_file 360
- ssl_key_file 360
- ssl_key_password 361
- mail_location 361
- Configuring Dovecot for Maildir 361
- Configuring an Email Client to Send and Receive Email Using IMAP 362
- Checking the IMAP Maildir contents 366
- Receiving Email with POP3 367
- Checking the POP3 Maildir contents 369
- Dovecot and OpenSSL 370
- Using Evolution with OpenSSL 370
- Troubleshooting Tactics 372
- Summary 372
- Chapter 16: Directory Services 373
- The Need for Unified Authentication 373
- Network Information System 375
- Setting up NIS 375
- The NIS Server 375
- Creating Your First Domain 376
- ypserv.conf 377
- The NIS Client 378
- Binding to an NIS Domain 379
- yp.conf 379
- nsswitch.conf 379
- Testing the Setup 380
- Maps 381
- NIS Utilities 382
- ypwhich 382
- ypcat 383
- ypmatch 383
- yppasswd 383
- NIS with NFS 384
- Using NIS with NFS 384
- OpenLDAP 385
- Setting up OpenLDAP 385
- slapd 386
- ldap.conf 386
- slapd.conf 386
- Modules 387
- Schemas 388
- Your First Database 390
- Using the my-domain.com database 391
- LDIF Format 392
- Starting OpenLDAP 393
- Adding Entries with ldapadd 393
- Searching Entries with ldapsearch 396
- Changing Entries with ldapmodify 397
- Removing Entries Using ldapdelete 398
- Creating a Backup 399
- OpenLDAP and Samba 399
- Installing Perl Modules 400
- nss_ldap 402
- The nss_ldap Configuration File 403
- ldap.secret 404
- nsswitch.conf 404
- OpenLDAP 405
- OpenLDAP Client Configuration File 405
- Samba 406
- Smbldap-tools 408
- smbldap.conf 408
- smbldap_bind.conf 408
- Installing and Configuring smbldap-tools 409
- Joining the DCTOYS Domain Controller 411
- Testing the Samba and OpenLDAP Setup 412
- Troubleshooting Tactics 413
- Pitfall #1: Cannot log into the domain controller 413
- Pitfall #2: Cannot start the Samba server properly because only the nmbd process is running 413
- Summary 413
- Chapter 17: The Linux Kernel 415
- History of the Linux Kernel 415
- Types of Linux Kernels 415
- Kernel Modules 417
- Loading Kernel Modules 418
- insmod 418
- modprobe 418
- modprobe.conf 419
- Unloading Kernel Modules 421
- rmmod 421
- modprobe 422
- blacklist 422
- When to Recompile the Kernel 422
- Getting a New Linux Kernel 423
- Preparing to Configure the New Linux Kernel 423
- Ways to Configure the Kernel Sources 424
- Configuring the Kernel with the Command Line 424
- Configuring the Kernel Graphically 426
- Configuring the Kernel with menuconfig 428
- Preparing for Kernel Compilation 430
- Building the Kernel 431
- Building the Kernel Modules 432
- Making the Boot Loader Initialized RAM Disk 432
- Adding the New Kernel into the GRUB Boot Loader 432
- Your Turn 434
- Summary 434
- Chapter 18: Linux Virtualization 435
- Understanding Virtualization 435
- Deciding to Use Virtualization 436
- Xen 437
- Exploring Virtualization Technologies 437
- Full Virtualization 437
- Hardware-Assisted Virtualization 437
- Operating System Virtualization 437
- Paravirtualization 438
- Hardware Requirements 439
- Installing Xen 440
- The xend Daemon 441
- The xend Configuration Files 441
- xend-config.sxp 441
- xend-pci-permissive.sxp and xend-pci-quirks.sxp 442
- qemu-ifup 442
- The xend Network Configuration Scripts Directory 443
- Checking Dom-0 443
- Making a Guest with virt-install 444
- Preparing the Installation Media 446
- Using the virt-install Command 446
- Understanding the Guest Configuration File 448
- Xen Guest Example Configuration Files 450
- Connecting to a Guest 450
- Using xm 450
- Using virt-viewer 451
- Using vncviewer 452
- Shutting Down a Guest 453
- Starting a Guest 453
- Cloning a Guest 453
- Cleaning Up 454
- Summary 455
- Chapter 19: Linux Troubleshooting 457
- The CentOS Rescue Environment 457
- Exploring the Rescue Environment 460
- Troubleshooting Checklist 461
- Changed the Root Password 461
- Bootloader Was Overwritten 462
- You’re Experimenting with the Files in /etc 463
- Skipping /mnt/sysimage 463
- Finding the Affected System’s Root (/) Directory 464
- Mounting Logical Volumes 464
- Mounting Logical Volumes 465
- Single-User Mode 466
- Booting into Single-User Mode 466
- My New Kernel Is Stuck! 467
- Creating the Required Device Files 468
- Summary 469
- Index 471
