Dependencies
- Apache Karaf 2.4.3 (the version for the example below)
- pax-logging-log4j2-1.8.3 (http://search.maven.org/#search|ga|1|pax-logging-log4j2)
- jackson-annotations-2.4.6
- jackson-core-2.4.6
- jackson-databind-2.4.6.1
- jackson-dataformat-yaml-2.4.6 (if you choose YAML as your log4j2 configuration format which is the one I prefer because it's much more human-readable than XML and JSON)
- disruptor-3.3.2 (if using asynchronous loggers)
startup.properties
#org/ops4j/pax/logging/pax-logging-service/1.8.3/pax-logging-service-1.8.3.jar=8 org/ops4j/pax/logging/pax-logging-log4j2/1.8.3/pax-logging-log4j2-1.8.3.jar=8 # Add other libraries you need below com/fasterxml/jackson/core/jackson-annotations/2.4.6/jackson-annotations-2.4.6.jar=35 com/fasterxml/jackson/core/jackson-core/2.4.6/jackson-core-2.4.6.jar=35 com/fasterxml/jackson/core/jackson-databind/2.4.6.1/jackson-databind-2.4.6.1.jar=35 com/fasterxml/jackson/dataformat/jackson-dataformat-yaml/2.4.6/jackson-dataformat-yaml-2.4.6.jar=35 com/lmax/disruptor/3.3.2/disruptor-3.3.2.jar=35
org.ops4j.pax.logging.cfg
org.ops4j.pax.logging.log4j2.config.file = ${karaf.etc}/log4j2.yaml
# Use asynchronous logger for all loggers
#org.ops4j.pax.logging.log4j2.async = false
log4j2.yaml
Create your log4j2.yaml in ${karaf.etc} and then you can configure log4j2 in it as normal Java application.
Furthermore, migrate log4j.rootLogger = INFO, osgi:VmLogAppender in log4j settings to log4j2.
appenders:
PaxOsgi:
name: paxosgi
filter: VmLogAppender
loggers:
root:
level: INFO
AppenderRef:
- ref: paxosgi
