syslog is one of those ubiquitous standards on which much of modern computing runs. Built into operating systems such as Linux, it’s also commonplace in networking and IoT devices like IP cameras. It provides a way for streaming log messages, along with metadata such as the source host, severity of the message, and so on. Sometimes the target is simply a local logfile, but more often it’s a centralised syslog server which in turn may log or process the messages further.
As a high-performance, distributed streaming platform, Apache Kafka® is a great tool for centralised ingestion of syslog data. Since Apache Kafka also persists data and supports native stream processing we don’t need to land it elsewhere before we can utilise the data. You can stream syslog data into Kafka in a variety of ways, including through Kafka Connect for which there is a dedicated syslog plugin.
In this post, we’re going to see how KSQL can be used to process syslog messages as they arrive in realtime.
Check it out.