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<html> <head> <title>RulesetCreateMainQueue - rsyslog.conf file</title> </head> <body> <a href="rsyslog_conf_global.html">rsyslog.conf configuration directive</a> <h2>$RulesetCreateMainQueue</h2> <p><b>Type:</b> ruleset-specific configuration directive</p> <p><b>Parameter Values:</b> boolean (on/off, yes/no)</p> <p><b>Available since:</b> 5.3.5+</p> <p><b>Default:</b> off</p> <p><b>Description:</b></p> <p> Rulesets may use their own "main" message queue for message submission. Specifying this directive, <b>inside a ruleset definition</b>, turns this on. This is both a performance enhancement and also permits different rulesets (and thus different inputs within the same rsyslogd instance) to use different types of main message queues. <p>The ruleset queue is created with the parameters that are specified for the main message queue at the time the directive is given. If different queue configurations are desired, different main message queue directives must be used in front of the $RulesetCreateMainQueue directive. Note that this directive may only be given once per ruleset. If multiple statements are specified, only the first is used and for the others error messages are emitted. <p>Note that the final set of ruleset configuration directives specifies the parameters for the default main message queue. <p>To learn more about this feature, please be sure to read about <a href="multi_ruleset.html">multi-ruleset support in rsyslog</a>. <p><b>Caveats:</b></p> The configuration statement "$RulesetCreateMainQueue off" has no effect at all. The capability to specify this is an artifact of the current (ugly!) configuration language. <p><b>Example:</b></p> <p>This example sets up a tcp server with three listeners. Each of these three listener is bound to a specific ruleset. As a performance optimization, the rulesets all receive their own private queue. The result is that received messages can be independently processed. With only a single main message queue, we would have some lock contention between the messages. This does not happen here. Note that in this example, we use different processing. Of course, all messages could also have been processed in the same way ($IncludeConfig may be useful in that case!). </p> <textarea rows="30" cols="60">$ModLoad imtcp # at first, this is a copy of the unmodified rsyslog.conf #define rulesets first $RuleSet remote10514 $RulesetCreateMainQueue on # create ruleset-specific queue *.* /var/log/remote10514 $RuleSet remote10515 $RulesetCreateMainQueue on # create ruleset-specific queue *.* /var/log/remote10515 $RuleSet remote10516 $RulesetCreateMainQueue on # create ruleset-specific queue mail.* /var/log/mail10516 & ~ # note that the discard-action will prevent this messag from # being written to the remote10516 file - as usual... *.* /var/log/remote10516 # and now define listners bound to the relevant ruleset $InputTCPServerBindRuleset remote10514 $InputTCPServerRun 10514 $InputTCPServerBindRuleset remote10515 $InputTCPServerRun 10515 $InputTCPServerBindRuleset remote10516 $InputTCPServerRun 10516 </textarea> <p>Note the positions of the directives. With the current config language, position is very important. This is ugly, but unfortunately the way it currently works. </p> <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 © 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 2 or higher.</font></p> </body> </html>
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