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https://issues.apache.org/jira/browse/GUACAMOLE-2309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18099311#comment-18099311
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Nick Couchman commented on GUACAMOLE-2309:
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I think I see why this is happening. In
[LogLevel.java|[https://github.com/apache/guacamole-client/blob/0b65b785afa3de481d08b90c44c9a748c6f5c316/guacamole/src/main/java/org/apache/guacamole/log/LogLevel.java#L40-L45],]
we have:
{{ /**}}
{{ * Non-fatal conditions that may indicate the presence of a problem.}}
{{ */}}
{{ @PropertyValue("warning")}}
{{ @PropertyValue("warn")}}
{{ WARNING("warning"),}}
I believe the value "warning" in that final line is the value that is supposed
to be sent to the logback extension, when, in fact, the value "warn" is what
should be in that line.
> "log-level: warn" is broken
> ----------------------------
>
> Key: GUACAMOLE-2309
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-2309
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole
> Affects Versions: 1.6.0
> Reporter: Marco van Zwetselaar
> Priority: Minor
>
> Setting {{'log-level: warn'}} in {{guacamole.properties}} does not limit
> logging to {{WARN}} and above. At startup, catalina.out shows that the level
> is being set:
> {{[2026-07-26 21:34:51] [info] 21:34:51.388 [main] INFO
> org.apache.guacamole.log.LogModule -- Logging will be at the "warning"
> level.}}
> However, these two DEBUG level lines are logged every minute:
> {{[2026-07-26 00:45:42] [info] 00:45:42.650 [pool-1-thread-1] DEBUG
> o.a.g.rest.auth.HashTokenSessionMap - Session check completed in 0 ms.}}
> {{[2026-07-26 00:46:42] [info] 00:46:42.650 [pool-1-thread-1] DEBUG
> o.a.g.rest.auth.HashTokenSessionMap - Checking for expired or invalid
> sessions...}}
> When keeping {{log-level}} unset, or setting it to {{info}} or {{{}error{}}},
> these DEBUG lines are not logged. Nor are they logged when I drop a file
> {{/etc/guacamole/logback.xml}} with {{{}<configuration><root level="warn"
> /></configuration>{}}}.
> This is on Tomcat 10.1.16 on Ubuntu 24.04, in a no-frills installation.
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