Use this documentation with care! It describes
the outdated version 7, which was actively
developed around 2014 and is considered dead by the
rsyslog team.
This documentation reflects the latest update of the
v7-stable branch.
It describes the 7.6.8 version, which was never
released. As such, it contains some content that
does not apply to any released version.
To obtain the doc that properly matches your installed
v7 version, obtain the doc set from your distro. Each
version of rsyslog contained the version that exactly
matches it.
As general advise, it is strongly suggested to
upgrade to the current version supported by the rsyslog
project. The current version can always be found on
the right-hand side info box on the
rsyslog web site.
Note that there is only limited rsyslog community support
available for the outdated v7 version (officially we do not
support it at all, but we usually are able to answer simple
questions). If you need to stick with v7, it probably is
best to ask your distribution for support.
rsyslog.conf configuration directive
$RulesetCreateMainQueue¶
Type: ruleset-specific configuration directive
Parameter Values: boolean (on/off, yes/no)
Available since: 5.3.5+
Default: off
Description:
Rulesets may use their own “main” message queue for message submission. Specifying this directive, inside a ruleset definition, 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.
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 $RulesetCreateMainQueue directive. Note that this directive may only be given once per ruleset. If multiple statements are specified, only the first is used and for the others error messages are emitted.
Note that the final set of ruleset configuration directives specifies the parameters for the default main message queue.
To learn more about this feature, please be sure to read about multi-ruleset support in rsyslog.
Caveats:
The configuration statement “$RulesetCreateMainQueue off” has no effect at all. The capability to specify this is an artifact of the legacy configuration language.
Example:
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!).
$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 listeners bound to the relevant ruleset
$InputTCPServerBindRuleset remote10514
$InputTCPServerRun 10514
$InputTCPServerBindRuleset remote10515
$InputTCPServerRun 10515
$InputTCPServerBindRuleset remote10516
$InputTCPServerRun 10516
Note the positions of the directives. With the legacy language, position is very important. It is highly suggested to use the ruleset() object in RainerScript config language if you intend to use ruleset queues. The configuration is much more straightforward in that language and less error-prone.
[rsyslog.conf overview] [manual index] [rsyslog site]
This documentation is part of the rsyslog project. Copyright © 2009-2014 by Rainer Gerhards and Adiscon. Released under the GNU GPL version 2 or higher.