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Som Snytt commented on LOG4J2-2663: ----------------------------------- This behavior is specified differently for YAML 1.2. ([per stackoverflow|[https://stackoverflow.com/questions/42283732/are-on-and-off-supposed-to-be-interpreted-as-true-or-false-in-yaml-1-2])] Maybe this can be clarified in the linked ticket about documentation. > Can't configure a logger off in yaml > ------------------------------------ > > Key: LOG4J2-2663 > URL: https://issues.apache.org/jira/browse/LOG4J2-2663 > Project: Log4j 2 > Issue Type: Bug > Components: Configurators > Affects Versions: 2.11.1 > Reporter: Som Snytt > Priority: Major > > Yaml config of the form: > {code:java} > configuration: > status: off > {code} > results in: > {noformat} > 2019-07-23 16:06:15,778 main ERROR Invalid status level specified: false. > Defaulting to ERROR.{noformat} > and trying to turn off an ordinary logger: > {code:java} > - name: com.acme.noise > level: off > additivity: false > {code} > results in: > {noformat} > 2019-07-23 16:18:29,534 main WARN Error while converting string [false] to > type [class org.apache.logging.log4j.Level]. Using default value [null]. > java.lang.IllegalArgumentException: Unknown level constant [FALSE].{noformat} > -- This message was sent by Atlassian JIRA (v7.6.14#76016)