Summary

Good troubleshooting skills consist of a combination of disciplines that one learns to master over time. When you experience problems with FreeRADIUS you should take a logical approach to identify and fix the problem. This includes the following:

• Don't panic.
• Ask yourself what has changed recently.
• Make a complete backup of the configuration before you make any changes.
• Remember the log files.
• Remember debug mode.
• Remember the FAQ.
• Introducing a deliberate error is sometimes helpful to see how something behaves if it is broken and compare this to something that does not behave it should.
• Google is your friend (GIYF).
• Don't be afraid to post on the mailing list but stick to its rules.

Pop quiz – troubleshooting

1. You are newly employed by a firm that uses a mixture of Ubuntu and Debian servers. Coming from a SUSE environment you used to type in the following command to confirm that FreeRADIUS is running:

   ps -aux and not pa -aux
   

   When you run this command on a the primary FreeRADIUS...