Shifting from Java implementation to C implementation

AxoSyslog has removed the Java implementation of the kafka() destination: both kafka() and kafka-c() now use the C implementation. If you’re migrating a configuration written for the Java implementation, make the following changes.

  • The template() option has been renamed message().

  • The kafka-bootstrap-servers() option has been renamed bootstrap-servers().

  • The properties-file() option has been removed. Set the Kafka producer properties in the config() option instead, which also replaces the old implementation’s option() option and has a different syntax.

  • The client-lib-dir() option has been removed. Remove it from the configuration file, the C implementation needs no Java libraries.

  • The @define kafka-implementation kafka-c line is no longer needed. Remove it from the configuration file.

  • The topic() option accepts templates. If you use a template, also set the fallback-topic() option, which AxoSyslog uses when the template resolves to an invalid topic name.

For more information, see Options of the kafka() destination’s C implementation.

Last modified August 2, 2026: Adds required modules/packages to install and destination pages (553d6d9b)