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https://issues.apache.org/jira/browse/LOG4J2-470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13864651#comment-13864651
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Russell J. Nile commented on LOG4J2-470:
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Sorry for the delay in responding...
I built the latest/greatest from the trunk and still see the issue on my
machine.
With the dummy hostname resolution in place:
CTMSApplicationService-LH7U0CNU2050GKX.log
Without it:
CTMSApplicationService-${hostName}.log
> Resolution of ${hostName} in log4j2.xml file only works after first reference
> -----------------------------------------------------------------------------
>
> Key: LOG4J2-470
> URL: https://issues.apache.org/jira/browse/LOG4J2-470
> Project: Log4j 2
> Issue Type: Bug
> Components: Configurators
> Affects Versions: 2.0-beta9
> Environment: Windows 7, JDK 1.7, Eclipse 4.2
> Reporter: Russell J. Nile
> Priority: Minor
>
> I am using $\{hostName} to include the hostname in the log file. When I use
> it it resolves to "$\{hostName}" the first time it is referred to in the log
> and then the proper hostname after that.
> Example configuration (comment out the "Properties" section to duplicate):
> {code}
> <?xml version="1.0" encoding="UTF-8"?>
> <Configuration monitorInterval="60" name="SMSLog4JConfiguration"> <!-- add
> this to spit out debug about configuration: 'status="debug"' -->
> <!-- This seems to be a bug, but the $hostName seems to need to be
> referenced
> once before it can be used. Maybe it gets correct in a future
> log4j2 release -->
> <Properties>
> <Property name="theHostName">${hostName}</Property>
> </Properties>
> <Appenders>
> <RollingFile name="RollingFileAppender"
> fileName="/applicationlogs/CTMSApplicationService-${hostName}.log"
>
> filePattern="/applicationlogs/${hostName}-%d{MM-dd-yyyy}-%i.log">
> <Policies>
> <OnStartupTriggeringPolicy />
> <TimeBasedTriggeringPolicy interval="24"
> modulate="true" />
> </Policies>
> <PatternLayout pattern="[%d{ISO8601}] [%t] %-5level
> %logger{6} - %msg%n" />
> </RollingFile>
> </Appenders>
> <Loggers>
> <!-- default for "includeLocation" is false, but I want to be
> clear -->
> <Root level="debug" includeLocation="false">
> <AppenderRef ref="RollingFileAppender" />
> </Root>
> </Loggers>
> </Configuration>
> {code}
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