Red Hat Enterprise Linux system service Management

Shutting down the firewall

Close iptables : chkconfig iptables off

Close SELinux : /etc/sysconfig/selinux File Modification " selinux=disabled "

Restart

Init configuration file

/etc/inittab Configuring the default run level

/etc/sysconfig/init Control TTY number of terminal opening, terminal color scheme

/etc/init/rcs.conf Loading Rc.sysinit script to complete the system initialization task

/etc/init/rc.conf compatible scripts, responsible for call handling at each run level

/etc/init/rcs-sulogin.conf for single-user mode /bin/sushell Environment /ETC/INIT/CONTROL-ALT/DELETE.COMF under the control terminal Ctrl+alt+del Hotkey Operation

/etc/init/start-ttys.conf Configuration TTY number of open terminals, device files

/etc/inint/tty,conf Control TTY opening of the terminal

Run Level field

0 : Shutdown Status using this level will shut down the machine

1 : Single user mode, no password Authentication required to log into the system, more for system maintenance

2 : Multi-user mode for character interface (network access not supported),

3: character interface for multi-user mode, most servers run at this level

4 : Not assigned to use

5 : Graphical interface with multi-user mode, providing a graphical interface operating environment

6 : Restart, the host will be restarted when using this level

switch Operation level Initi N

View Run level commands RunLevel

System Service Control

The control script for the service /etc/rc.d/init.d/ directory under

format: Service Service Name control type

/etc/rc.d/init.d/ Service Name control type

control type

Start Start

Stop Stop

Restart Restart

Reload overloaded

Status View Status

Optimized boot auto-load service

Ntsysv tool provides interactive graphical interface

ntsysv--level// and Change * level of startup run State

Press Space (space bar selection)

Chkconfig Tools

chkconfig--list View the default startup status for all services

chkconfig--list Service Name

chkconfig--level Run Level Service name On|off

Viewing free memory grep "Memfree"/proc/meminfo

This article is from the "Carey" blog, make sure to keep this source http://careygg.blog.51cto.com/11084669/1732249

Red Hat Enterprise Linux system service Management