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ISBN : 978-2-7460-9712-4
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GNU/Linux	CentOS 4.8	i386
	rhnsd(8)

---

UP2DATE

NAME
SYNOPSIS
DESCRIPTION
FILES
SEE ALSO
AUTHORS
REPORTING BUGS
COPYRIGHT

---

NAME

rhnsd − a program for querying the CentOS Network for updates and information

SYNOPSIS

rhnsd [OPTION]...

DESCRIPTION

rhnsd is a background daemon process that periodically polls the CentOS Network to see if there are any queued actions available. If any are queued, rhnsd will execute those actions.

rhnsd is typically started from the initialization (init) scripts in /etc/init.d/rhnsd when it’s time to poll the CentOS Network servers for available updates and actions. The default interval is every 240 minutes. The minimum polling interval is 60 minutes.

To check for updates, rhnsd runs an external program called rhn_check. This is a small application that actually makes the network connection to CentOS Networks.

The rhnsd daemon does not listen on any network ports, nor does it ever talk to the network directly. Any network activity is done via the rhn_check utility.

rhnsd can be configured by editing the /etc/sysconfig/rhn/rhnsd configuration file. This is actually the configuration file the rhnsd initialization script /etc/init.d/rhnsd uses.
-i, --interval

Specify the interval that rhnsd should wait between checking the CentOS Network. Default is 240 minutes, the minimum is 60 minutes. This can also be specified in /etc/sysconfig/rhn/rhnsd

-v, --verbose

output more information about what rhnsd is doing.

-f, --foreground

force the rhnsd process to run in the foreground instead of automatically backgrounding itself, as it does by default.

FILES

/etc/sysconfig/rhn/rhnsd Configuration settings for the rhnsd daemon’s initialization script. /usr/sbin/rhn_check The external program launched by rhnsd to connect to the CentOS Network and retrieve any actions that have queued up. /etc/sysconfig/rhn/systemid A certification that authenticates the client machine to the CentOS Network. Generated via the up2date or rhnreg_ks utilities. SEE ALSO The rhnsd daemon is tightly coupled with CentOS Network. Visit <http://www.centos.org> for access or to sign up. rhn_check(8), up2date(8), up2date-config(8), AUTHORS Written by Preston Brown <pbrown@redhat.com>, Cristian Gafton <gafton@redhat.com>, and Adrian Likins <alikins@redhat.com> REPORTING BUGS Report bugs to <http://bugzilla.redhat.com>. COPYRIGHT Copyright © 1999, 2000 Red Hat, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. rhnsd(8)