Книга: Fedora™ Unleashed, 2008 edition

Controlling Apache with Fedora's chkconfig Command

Controlling Apache with Fedora's chkconfig Command

The chkconfig command provides a command-line-based interface to Fedora's service scripts. The command can be used to list and control which software services are started, restarted, and stopped for a specific system state (such as when booting up, restarting, or shutting down) and runlevel (such as single-user mode, networking with multitasking, or graphical login with X).

For example, to view your system's current settings, take a look at Fedora's default runlevel as defined in the system initialization table /etc/inittab using the grep command:

# grep id: /etc/inittab
id:3:initdefault:

This example shows that this Fedora system boots to a text-based login without running X11. You can then use the chkconfig command to look at the behavior of Apache for that runlevel:

# chkconfig --list | grep httpd
httpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off

Here you can see that Apache is turned off for runlevels 3 and 5 (the only two practical runlevels in a default Fedora system, although you could create a custom runlevel 4 for Apache). Use --level, httpd, and the control keyword on to set Apache to automatically start when booting to runlevel 3:

# chkconfig --level 3 httpd on

You can then again use chkconfig to verify this setting:

# chkconfig --list | grep httpd
httpd 0:off 1:off 2:off 3:on 4:off 5:off 6:off

To have Apache also start when your system is booted to a graphical login, again use level, httpd, and the control keyword on, but this time, specify runlevel 5 like so:

# chkconfig --level 5 httpd on

Again, to verify your system settings, use the following:

# chkconfig --list | grep httpd
httpd 0:off 1:off 2:off 3:on 4:off 5:on 6:off

Use the off keyword to stop Apache from starting at a particular runlevel.

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