<ul><li>When processing event streams with Logstash, it can be useful to record the time an event was processed and the hostname of the Logstash server handling it.</li><li>You can use the Ruby filter plugin in Logstash to add a field capturing the processing time and the hostname.</li><li>The Ruby code initializes the necessary libraries, retrieves the current time and server hostname, and adds them as fields to each event.</li><li>This allows for better traceability, debugging, and monitoring of event data in Logstash and Elasticsearch.</li></ul>

Adding Processing Timestamp and Hostname in Logstash Using Ruby

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