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List of Figures
Chapter 1: Introduction to Linux TroubleshootingFigure 1-1: Choose between GNOME and KDE desktops, based on the X Window System.Figure 1-2: Advanced network server software once in Red Hat Linux is included in Fedora.Figure 1-3: Software development tools are spread across more than 100 software packages in Fedora.Figure 1-4: Linux Toys and other hobbyist applications will run on Fedora Core.Chapter 2: Troubleshooting Installation
Figure 2-1: When configuring a mouse during installation, select the manufacturer and model number when possible.Figure 2-2: If your monitor isn''''t listed on the Monitor Configuration screen, choose a generic CRT or LCD display option.Figure 2-3: Fedora detects an earlier Fedora or Red Hat Linux installation and gives you the option of upgrading.Chapter 3: Updating and Upgrading Fedora
Figure 3-1: Graphical up2date with an update available.Figure 3-2: Graphical up2date downloading an update.Figure 3-3: Upgrade an existing Red Hat Linux install.Figure 3-4: Migrate ext2 to ext3.Figure 3-5: Required install media.Chapter 4: Securing and Automating Desktop and Server Installs
Figure 4-1: The redhat-config-kickstart GUI config tool makes a ks.cfg file for automating Fedora Core or Red Hat Enterprise network-based OS installs.Figure 4-2: The Fedora Core CD/floppy/PXE boot/install screen.Chapter 5: Preparing for Backups and Migration
Figure 5-1: Example of using full and incremental backups together.Figure 5-2: Example of using full and differential backups together.Figure 5-3: Using sequential levels to achieve incremental backups.Figure 5-4: A Linux server/machine running a backup client talking to a centralized backup SAN via high-speed fibre channel.Chapter 6: Troubleshooting Tools
Figure 6-1: Konsole (top) and GNOME Terminal (bottom) windows provide shell access on a Linux desktop.Figure 6-2: Before you can run GUI administration tools, you are prompted to enter the root password.Figure 6-3: Use top to sort processes by CPU, memory, or other system usage.Figure 6-4: Select capture options and display network protocol data in the Ethereal window.Chapter 7: X Troubleshooting: Video, Mouse, and Keyboard
Figure 7-1: Choose basic settings for your video card and monitor.Figure 7-2: Adjust video settings with xvidtune.Chapter 9: File System, Disk, and Power Troubleshooting
Figure 9-1: Set whether CDs are automatically mounted upon insertion.Figure 9-2: Watch your battery charge from an icon in the GNOME panel.Chapter 10: Detecting and Responding to Intrusions
Figure 10-1: The Red Hat System Logs tool simplifies log file monitoring.Chapter 11: Firewall Troubleshooting
Figure 11-1: A single-homed stand-alone server can use an iptables-based firewall config or TCP wrappers to control incoming service requests, but not all services can be controlled with TCP wrappers by default.Figure 11-2: Dual-homed or network firewalls are designed to protect entire networks of machines, not services running on the same server. These firewalls should only be using iptables.Figure 11-3: Incoming client requests pass through levels of security on a system. iptables is the most secure outer level of defense or access control.Figure 11-4: Red Hat Linux offers a graphical tool to configure iptables.Figure 11-5: The most commonly used iptables for simple firewalls, called "filter." iptables is composed of multiple sets of tables of chains, and these chains have ordered sets of rules.Figure 11-6: In a NAT routing firewall configuration, iptables forms a boundary between networks.Chapter 12: Troubleshooting BIND9 and DNS
Figure 12-1: DNS is managed through a set of servers organized in an inverted tree structure.Chapter 13: Modem TroubleshootIng
Figure 13-1: During boot-up, kudzu finds a supported Multitech modem with a 4Lucent Venus chipset.Figure 13-2: Here kudzu finds a nonsupported Motorola winmodem.Chapter 14: Printer Troubleshooting
Figure 14-1: Use the Printer Configuration window to define the printers you can use.Figure 14-2: Learn about the printers on your system on the Printer/Driver Notes screen.Figure 14-3: View current driver options from the Driver Options tab.Figure 14-4: Use the Printer Configuration tool to set up a new printer.Figure 14-5: Begin the printer configuration wizard in the Add A New Print Queue window.Figure 14-6: Select the appropriate queue type for this printer.Figure 14-7: Once you''''ve selected a queue type, provide specific information about your print server.Figure 14-8: Identify your particular printer in the drop-down menu.Figure 14-9: Once the printer appears in the main Printer Configuration window, it is ready to go.Figure 14-10: You can configure a printer through the CUPS web tool.Figure 14-11: Provide the details of the new printer on the Add New Printer page.Figure 14-12: Choose the appropriate protocol used by your printer.Figure 14-13: Define the printer with a URI that describes its specifications.Figure 14-14: If the printer appears in the list, it has been configured properly.Chapter 15: Samba Troubleshooting
Figure 15-1: Use the Samba configuration tool for a quick start under Red Hat Linux or Fedora Core.Figure 15-2: Use SWAT to work with Samba through your web browser.Figure 15-3: Define your new share in SWAT''''s Shares window.Figure 15-4: On the Share Parameters page, define the permissions for the new share.Figure 15-5: SWAT''''s Wizard tool can walk you through a simple Samba configuration.Chapter 16: NFS Troubleshooting
Figure 16-1: Use the NFS Server Configuration window to share directories.Chapter 18: File Transfer Troubleshooting
Figure 18-1: KDE''''s Konqueror browser is SSH-aware.Figure 18-2: Use KDE''''s Konqueror to add an HTML editor to your toolbar.Chapter 19: E-Mail Server Troubleshooting
Figure 19-1: It''''s easy to manage the alternatives system with a point-and-click graphical interface.Figure 19-2: The text-based alternatives interface is a happy medium between command line and GUI.Figure 19-3: The chkconfig graphical interface helps you to manage services on various runlevels.Figure 19-4: The ntsysv tool is a text-based interface for the chkconfig tool.Appendix B: Troubleshooting SUSE Linux
Figure B-1: sax2 initial screen.Figure B-2: sax2 graphics card configuration.Figure B-3: sax2 monitor configuration.Figure B-4: sax2 color depth configuration.Figure B-5: sax2 resolution configuration.Figure B-6: YaST startup screen.
