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https://issues.apache.org/jira/browse/LOG4J2-3181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17435074#comment-17435074
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Ralph Goers commented on LOG4J2-3181:
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I agree this is a problem. In my case I got errors loading the config via http
and startup completely fails.
> When custom configurationFile is missing then no fallback configuration is
> used
> -------------------------------------------------------------------------------
>
> Key: LOG4J2-3181
> URL: https://issues.apache.org/jira/browse/LOG4J2-3181
> Project: Log4j 2
> Issue Type: Bug
> Components: Configuration
> Affects Versions: 2.13.0
> Reporter: Krzysztof Gąsior
> Priority: Major
>
> So I am using following setting to define 'external' logger configuration file
> {code:java}
> -Dlog4j.configurationFile=/etc/xxx/log4j2.properties
> {code}
> I also put a default config inside the package with assumption to use it as a
> fallback, however if the 'external' configuration file does not exist
> following occurs:
> {code:java}
> ERROR StatusLogger File not found in file system or classpath:
> /etc/xxx/log4j2.properties
> ERROR StatusLogger Reconfiguration failed: No configuration found for
> '27bc2616' at 'null' in 'null'{code}
> and as a result logger is not configured at all and not logging anything,
> despite the fallback config is inside the package. There is a similar problem
> described in following [SO
> ticket|https://stackoverflow.com/questions/58338411/how-to-fall-back-to-log4j2-xml-when-custom-configurationfile-is-missing]
> In such situation I would expect log4j2 to follow the automatic configuration
> path as defined here:
> [https://logging.apache.org/log4j/2.x/manual/configuration.html]
> and use properties from class path or if those not found to fallback to a
> default settings. If not as a default behavior there at least should be way
> to force it to work that way.
> Note that there is also a second issue, if define multiple configs via
> configurationFile, even if single of those fails to be found then same issue
> as above happens, and we get no configuration at all.
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