There are basic questions.
On Sat, Apr 14, 2012 at 11:35 AM, Yogesh Girikumar
yogeshg1...@gmail.com wrote:
Hi,
I've been trying to look up event logging in Linux. But I don't seem to
find explanations to certain things.
https://tools.ietf.org/html/rfc5424
for e.g. What is a Facility? What are local0, local1 etc.
Can someone point me in the right direction? Maybe a link in plain English?
Facility is basically ..ok leave it.
Excerpt from man page syslog.conf on OpenBSD:
The facility describes the part of the system generating the message, and
is one of the following keywords: auth, authpriv, cron, daemon, ftp,
kern, lpr, mail, mark, news, syslog, user, uucp and local0 through
local7. These keywords (with the exception of mark) correspond to the
similar ``LOG_'' values specified to the openlog(3) and syslog(3) library
routines.
The level describes the severity of the message, and is a keyword from
the following ordered list (highest to lowest): emerg, alert, crit, err,
warning, notice, info and debug. These keywords correspond to the
similar (LOG_) values specified to the syslog library routine.
---
Try this:
$ logger -t girish 'how r u'
Basically you can specify the filters for logging various facilities and
their associated levels in /etc/syslog.conf
mail.* /var/log/maillog
daemon.*/var/log/daemon
And you can look at the perl Sys::Syslog module.
A typical C syslog program goes like:
openlog(girishcode, LOG_PERROR | LOG_PID, LOG_LOCAL0);
syslog(LOG_INFO,Started code);
The syslog() function takes vararg arguments just like printf.
-Girish
--
G3 Tech
Networking appliance company
web: http://g3tech.in mail: gir...@g3tech.in
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