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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head> <meta http-equiv="Content-Language" content="en"><title>Kernel Log Input Module (imklog)</title> </head> <body> <a href="rsyslog_conf_modules.html">back</a> <h1>Kernel Log Input Module</h1> <p><b>Module Name: imklog</b></p> <p><b>Author: </b>Rainer Gerhards <rgerhards@adiscon.com></p> <p><b>Description</b>:</p> <p>Reads messages from the kernel log and submits them to the syslog engine.</p> <p><b>Configuration Directives</b>:</p> <ul> <li><strong>$KLogInternalMsgFacility <facility></strong><br> The facility which messages internally generated by imklog will have. imklog generates some messages of itself (e.g. on problems, startup and shutdown) and these do not stem from the kernel. Historically, under Linux, these too have "kern" facility. Thus, on Linux platforms the default is "kern" while on others it is "syslogd". You usually do not need to specify this configuratin directive - it is included primarily for few limited cases where it is needed for good reason. Bottom line: if you don't have a good idea why you should use this setting, do not touch it.</li> <li><span style="font-weight: bold;">$KLogPermitNonKernelFacility [on/<span style="font-style: italic;">off</span>]<br> </span>At least under BSD the kernel log may contain entries with non-kernel facilities. This setting controls how those are handled. The default is "off", in which case these messages are ignored. Switch it to on to submit non-kernel messages to rsyslog processing.<span style="font-weight: bold;"></span></li> <li><span style="font-weight: bold;"></span>$DebugPrintKernelSymbols [on/<b>off</b>]<br> Linux only, ignored on other platforms (but may be specified)</li> <li>$klogSymbolLookup [on/<b>off</b>] -- disables imklog kernel symbol translation (former klogd -x option). NOTE that this option is counter-productive on recent kernels (>= 2.6) because the kernel already does the symbol translation and this option breaks the information.<br> <b>This option is scheduled for removal, probably with version 4.x.</b> Do not use it except if you have a very good reason. If you have one, let us know because otherwise new versions will no longer support it.<br> Linux only, ignored on other platforms (but may be specified)</li> <li><b>$klogConsoleLogLevel</b> [<i>number</i>] (former klogd -c option) -- sets the console log level. If specified, only messages with up to the specified level are printed to the console. The default is -1, which means that the current settings are not modified. To get this behavior, do not specify $klogConsoleLogLevel in the configuration file. Note that this is a global parameter. Each time it is changed, the previous definition is re-set. The one activate will be that one that is active when imklog actually starts processing. In short words: do not specify this directive more than once! <br><b>Linux only</b>, ignored on other platforms (but may be specified)</li> <li><b>$klogUseSyscallInterface</b> [on/<b>off</b>] -- former klogd -s option<br> Linux only, ignored on other platforms (but may be specified)</li> <li>$klogSymbolsTwice [on/<b>off</b>] -- former klogd -2 option<br> Linux only, ignored on other platforms (but may be specified)<br style="font-weight: bold;"> </li> </ul> <b>Caveats/Known Bugs:</b> <p>This is obviously platform specific and requires platform drivers. Currently, imklog functionality is available on Linux and BSD.</p> <p>This module is <b>not supported on Solaris</b> and not needed there. For Solaris kernel input, use <a href="imsolaris.html">imsolaris</a>.</p> <p><b>Sample:</b></p> <p>The following sample pulls messages from the kernel log. All parameters are left by default, which is usually a good idea. Please note that loading the plugin is sufficient to activate it. No directive is needed to start pulling kernel messages.<br> </p> <textarea rows="15" cols="60">$ModLoad imklog </textarea> <p>[<a href="rsyslog_conf.html">rsyslog.conf overview</a>] [<a href="manual.html">manual index</a>] [<a href="http://www.rsyslog.com/">rsyslog site</a>]</p> <p><font size="2">This documentation is part of the <a href="http://www.rsyslog.com/">rsyslog</a> project.<br> Copyright © 2008-2009 by <a href="http://www.gerhards.net/rainer">Rainer Gerhards</a> and <a href="http://www.adiscon.com/">Adiscon</a>. Released under the GNU GPL version 3 or higher.</font></p> </body></html>
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