Configuring logging¶
All logs are sent to stdout
by default. You can change this by extending the images.
log4j Log Levels¶
To change the default logging levels or add new logging levels:
- Change the
{COMPONENT}_LOG4J_ROOT_LOGLEVEL
to changerootLogger
loglevel. - Add or override default loggers by using
{COMPONENT}_LOG4J_LOGGERS
environment variable. This variable accepts the comma seperated values of the logger config. For example, to override the log levels of controller and request loggers , useKAFKA_LOG4J_LOGGERS="kafka.controller=WARN,kafka.foo.bar=DEBUG"
- To change the logging levels for the tools, use the
{COMPONENT}_LOG4J_TOOLS_ROOT_LOGLEVEL
.
Note: The Component Names
table lists the {COMPONENT}
names for each component.
A full example for Kafka is shown below:
docker run -d \ --name=kafka-log-example \ --net=host -e KAFKA_BROKER_ID=1 \ -e KAFKA_ZOOKEEPER_CONNECT=localhost:32181/jmx \ -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://localhost:39092 \ -e KAFKA_JMX_PORT=39999 \ -e KAFKA_LOG4J_LOGGERS="kafka.controller=WARN,kafka.foo.bar=DEBUG" \ -e KAFKA_LOG4J_ROOT_LOGLEVEL=WARN \ -e KAFKA_TOOLS_LOG4J_LOGLEVEL=ERROR \ confluentinc/cp-kafka:3.1.2
Component Names¶
Component | Name |
---|---|
Zookeeper | KAFKA |
Kafka | KAFKA |
Confluent Control Center | CONTROL_CENTER |
Schema Registry | SCHEMA_REGISTRY |
REST Proxy | KAFKA_REST |
Kafka Connect | CONNECT |