Yep. I've already read that one. What was not clear was whether there is
one main queue and it's always like that even if different rulesets have
their own queues or is it that there are separate queues processed
asynchronously.
Thanks for clarification.
On 15.04.2020 00:42, David Lang wrote:
by default, there is one main queue. If you have an input tied to a
ruleset, the messages still go on the main queue.
If you define a queue on that ruleset, the incoming messages never hit
the main queue (the queue for the ruleset effectively becomes the main
queue for those messages)
each queue has one or more worker threads, those worker threads go
through the config and execute each statement. Some of the statements
will reference another queue. In those cases, the worker thread just
copies the message to that queue and continues (assuming the queue
isn't full) These queues will then have their own worker threads, and
can then run into things that involve additional queues.
as for how the worker threads operation on different actions, see if
this helps you understand it
https://www.rsyslog.com/doc/v8-stable/whitepapers/queues_analogy.html
On Tue, 14 Apr 2020, Mariusz Kruk via rsyslog wrote:
Date: Tue, 14 Apr 2020 15:32:46 +0200
From: Mariusz Kruk via rsyslog <[email protected]>
To: [email protected]
Cc: Mariusz Kruk <[email protected]>
Subject: [rsyslog] Number of queues
Hi. I'm getting a bit confused reading the docs regarding queues.
On one hand - the
https://www.rsyslog.com/doc/master/concepts/queues.html document says
that "Currently, queues are used for the main message queue and for
the actions. There is a single main message queue inside rsyslog.
Each input module delivers messages to it".
On the other hand,
https://www.rsyslog.com/doc/master/concepts/multi_ruleset.html says
that you can activate per-ruleset queue by setting queue.type for a
ruleset.
So how does it work, especially with many inputs tied to different
rulesets having their own queues? And multiple outputs, possibly with
relations many-to-many between inputs and outputs.
Intuitive answer would be that every input is tied to a different
ruleset and thus different queue. Outputs have their own queues. But
what is the connection between input ruleset queues and output queues?
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