7.6.1. Procedure – Prerequisites
To publish messages from syslog-ng PE to Apache Kafka, complete the following steps.
If you want to use the Java-based modules of syslog-ng PE (for example, the Elasticsearch, HDFS, or Kafka destinations), download and install the Java Runtime Environment (JRE), 1.7 (or newer).
The Java-based modules of syslog-ng PE are tested and supported when using the Oracle implementation of Java. Other implementations are untested and unsupported, they may or may not work as expected.
Download the latest stable binary release of the Apache Kafka libraries (version 0.9 or newer) from http://kafka.apache.org/downloads.html.
Extract the Apache Kafka libraries into a single directory. If needed, collect the various
.jarfiles into a single directory (for example,
/opt/kafka/lib/) where syslog-ng PE can access them. You must specify this directory in the syslog-ng PE configuration file.
Check if the following files in the Kafka libraries have the same version number:
slf4j-log4j12-<version-number>.jar. If the version number of these files is different, complete the following steps:
Delete one of the files (for example,
Download a version that matches the version number of the other file (for example, 1.7.6) from the official SLF4J distribution.
Copy the downloaded file into the directory of your Kafka library files (for example,