Red Hat Enterprise Linux 5 Administration Unleashed

APPENDIX DTroubleshootingWhen a failure or inadequate system performance occurswithout an obvious solution, it can be quite frustrating.This appendix contains a list of common troubleshootingquestions divided into six parts. The parts correspond tothe six parts into which this book is divided to make iteasier to find questions relevant to your problems. Thisappendix cannot address all possible issues, but hopefully itwill provide a starting point for solving some of them.IN THIS APPENDIX. Installation and ConfigurationTroubleshooting. OS Core ConceptsTroubleshooting. System AdministrationTroubleshooting. Network Troubleshooting. Monitoring and TuningTroubleshooting. Security TroubleshootingInstallation and ConfigurationTroubleshootingQ. I have set up an FTP server with the ISO image filesnecessary for installation, but when I start the installation,I receive an error message that the installationmedia can’t be found on the FTP server. How do I getthe installation program to recognize the ISOs of theFTP server?A. FTP and HTTP installations require the installationfiles from the ISO files be loopback mounted, oneinstallation CD per directory. Refer to the “Using theISO Files” section in Chapter 1, “Installing Red HatEnterprise Linux,” for details.Q. How do I determine which repositories were enabledby the registration number entered during installation?A. Look in the /var/log/anaconda.log file and searchfor the key word regkey. For example, the followinglines show that Virtualization was enabled with theregistration key by listing the VT repository:03:14:17 INFO : moving (1) to step regkey03:14:44 INFO : Adding [‘VT’] repo03:14:44 INFO : Adding [‘Server’] repo03:14:44 INFO : repopaths is {‘virt’: [‘VT’],➥‘base’: [‘Server’]}