Hi, For completeness for anyone else wanting to use the Docker logger drivers....
Starting with -Dorg.apache.sling.commons.log.configurationFile=logtoconsole.xml where logtoconsole.xml contains [1], with 1 appender per file in log/* matching the name redirects everything to stdout. The pattern can contain tag to identify the source. Unfortunately there doesn't appear to be a wildcard available on Logback to override all possible loggers. Thanks for your help. Best Regards Ian 1 <?xml version="1.0"?> <configuration> <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender"> <!-- encoders are assigned the type ch.qos.logback.classic.encoder.PatternLayoutEncoder by default --> <encoder> <pattern>%d{dd.MM.yyyy HH:mm:ss.SSS} *%level* [%thread] %logger %message%n</pattern> </encoder> </appender> <appender name="/logs/error.log" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>error.log %d %-5level %X{sling.userId:-NA} [%thread] %logger{30} %marker- %msg %n</pattern> </encoder> </appender> .... <root level="info"> <appender-ref ref="CONSOLE"/> </root> <newRule pattern="*/configuration/osgi" actionClass="org.apache.sling.commons.log.logback.OsgiAction"/> <newRule pattern="*/configuration/appender-ref-osgi" actionClass="org.apache.sling.commons.log.logback.OsgiAppenderRefAction"/> <osgi/> </configuration> On 3 February 2016 at 13:15, Ian Boston <i...@tfd.co.uk> wrote: > Hi, > Thanks for the pointer, I'll give that a go. > Best Regards > Ian > > On 3 February 2016 at 13:09, Chetan Mehrotra <chetan.mehro...@gmail.com> > wrote: > >> As of now you can attach a console appender to ROOT logger so as to >> also redirect the logs to console but it would not be possible to >> disable any other FileAppender. So both appender would remain active. >> >> There are ways to override the OSGi based appenders [1] but that would >> be quite hacky as you would need to do it for each configured >> appender! >> >> To support this case we would need to change the logic to provide such an >> option >> >> Chetan Mehrotra >> [1] >> https://sling.apache.org/documentation/development/logging.html#configuring-osgi-appenders-in-the-logback-config >> >> On Wed, Feb 3, 2016 at 6:14 PM, Ian Boston <i...@tfd.co.uk> wrote: >> > Hi, >> > Is there a master switch in Sling which I can throw to make all logging >> > appear on stdout regardless of the OSGi LogWriter configuration ? >> Hopefully >> > this is already documented. >> > >> > I know that sounds like a dumb thing to do. The stdout in question of a >> > Docker container connected to a Docker logging driver that I can >> forward to >> > ELK via FluentD without ever touching the disk. I can categorise the >> stream >> > as it's written so I don't mind that the log lines from multiple >> categories >> > are interlaced as long as they are lines (including stack traces). >> > >> > I would rather treat the Sling instance (Docker container) as a black >> box >> > and not install a specific Logback or SLF4J Logging driver connecting >> > directly to the ELK stack, as there are other applications running that >> are >> > black boxes. >> > >> > Best Regards >> > ian >> > >