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HP-UX System Administrator's Guide: Configuration Management: HP-UX 11i Version 3

Chapter 10 Configuring the Kernel

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Table of Contents

Kernel Configuration Features
What Is a Kernel Configuration?
Overview of Kernel Configuration Commands
Overview of HP SMH for Kernel Configuration
Other Kernel Configuration Operations
Common Behavior for Kernel Configuration Commands
Common Command Line Options
Common Output Formats
Common Exit Status Codes
Common Security Constraints
Persistence of Changes
Managing Kernel Modules with kcmodule
Getting Information About Modules
Interpreting Module Information
Changing Module States
Managing Kernel Modules with HP SMH
Getting Information about Modules
Interpreting Module Information
Changing Module States
Managing Kernel Tunable Parameters with kctune
Getting Information About Tunables
Interpreting Tunable Information
Changing Tunable Values
Managing Kernel Tunable Parameters with HP SMH
Getting Information About Tunables
Interpreting Tunable Information
Changing Tunable Values
Monitoring Kernel Resource Usage
Getting Information about Alarms
Interpreting Alarm Information
Changing Alarm Settings
Add an Alarm
Activate, Deactivate, or Remove an Alarm
Resource Usage Commands
Managing the Running Configuration Using kconfig
Managing Saved Configurations with kconfig
Getting Information about Saved Configurations
Interpreting Saved Configuration Information
Using and Modifying Saved Configurations
Managing Configurations with System Files
Making Configuration Changes with System Files
Uses for System Files
The Kernel Configuration Log File
Parsing Command Output
Recovering from Errors
The Automatic Backup Configuration
Booting a Saved Configuration
Booting in Fail-Safe Mode
Modifying Tunable Values at Boot Time
Guidelines for Recovering from Errors
Kernel Configuration Example
Kernel Configuration Quick Reference Tables
Transition from Previous HP-UX Releases

With each successive release of HP-UX, system administrators have increasing ability to make changes to the configuration of the HP-UX kernel without experiencing costly and inconvenient downtime. Innovations such as Dynamic Kernel Tunables and Dynamically Loadable Kernel Modules allow critical maintenance tasks to be performed without sacrificing application availability.

With these innovations comes the need for a simpler and more comprehensive mechanism to manage kernel configurations. This chapter describes a suite of kernel configuration management commands and a web- and text-based interface that provide unified kernel configuration management. It is intended for use by HP-UX system administrators.

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