SLC6 - Managing configuration¶
Configuration Management
- Introduction
- System Configuration
- Configuring Components
- Un-configuring Components
- Updating Components
Introduction
Scientific Linux CERN 6 systems use some of system configuration tools from Quattor toolsuite.
These tools have been modified to allow standalone operation of the configuration
subsystem without the Quattor CDB (Configuration DataBase). The frontend command for
running configuration tools is /usr/sbin/lcm - Local Configuration Manager.
This system is used to preconfigure machine for CERN site wide defaults.
In the default system setup all necessary components are preinstalled
on Scientific Linux CERN 6 system.
Individual system settings shall be configured using provided system configuration tools.
System Configuration
The configuration file for the system is/etc/lcm.conf
in the default setup this file is empty and
the LCM (Local Configuration Manager) uses built in defaults.
In order to see available configuration Components, driven by LCM
you can run:
# /usr/sbin/lcm --list
Configuring Components
In order to configure all components run:# /usr/sbin/lcm --configure --all
In order to configure named component (for example global machine ssh configuration), run:
# /usr/sbin/lcm --configure ssh
Un-configuring Components
In order to un-configure component run:# /usr/sbin/lcm --unconfigure component
(Please note that most of components do not actually implement the unconfigure action ...)
Updating installed Components
In order to update already configured components run:# /usr/sbin/lcm --update