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https://issues.apache.org/jira/browse/LOG4J2-540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13910047#comment-13910047
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Matt Sicker commented on LOG4J2-540:
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Couldn't you just use JNDI for this? It's pretty generic for all your naming
needs.
> Add an ability to load an alternative Log4j config file
> -------------------------------------------------------
>
> Key: LOG4J2-540
> URL: https://issues.apache.org/jira/browse/LOG4J2-540
> Project: Log4j 2
> Issue Type: Wish
> Affects Versions: 2.0-beta9
> Reporter: Dushyant Pandya
> Labels: configuration, configuration-addition, features, location
>
> *Current Situation:*
> In case of web applications, the Log4J2 loads a config file specified by the
> servlet context init param *log4jConfiguration*. If the location is
> *classpath:* location then that config file would be searched somewhere in
> the classpath. Usually, to keep the web application WAR self sufficient the
> config file is bundled in *WEB-INF/classes* dir of the WAR itself.
> *Problem:*
> The config file usually has machine/env dependent information like the log
> file location, the log levels etc. These values and sometimes the whole file
> may be different depending upon where the app is running (e.g., developer
> machine, qa or production etc). In many organizations, the deployment
> scripts/tools specify these files per env or alter the values per env during
> deployment time. This is very difficult to do if the config file is bundled
> inside the WAR. An alternative is to NOT bundle the config file inside WAR
> and put it in some system classpath location but that solution makes the WAR
> not self contained.
> *Wish:*
> Wish there was an ability to specify a preferred log4j config file that will
> be used if it exists and a fallback config file location if the preferred
> config file doesn't exist.
> For example, with the following in _web.xml_
> {code}
> <context-param>
> <param-name>log4jConfiguration</param-name>
> <param-value>file:///file1.xml,classpath:file2.xml</param-value>
> </context-param>
> {code}
> The _file1.xml_ can be somewhere on file system or external classpath
> location and could be env specific. The _file2.xml_ can be the default file
> bundled in the WAR itself. If _file1.xml_ exists then it will take the
> precedence, if it doesn't exist then _file2.xml_ will be used. This idea is
> similar to the way _Spring Framework_ allows specifying multiple values to
> the *location* attribute when specifying [property
> placeholder|http://docs.spring.io/spring/docs/4.0.1.RELEASE/spring-framework-reference/htmlsingle/#beans-factory-placeholderconfigurer].
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