Mingyi World Elasticsearch

Jan 3, 2025 · Interview Experience

Top 10 Logstash Interview Questions & Answers

This article walks through the most common Logstash interview topics, covering its role in the ELK stack, key Input and Filter plugins, the difference between DATA and GREEDYDATA, Mutate gsub usage, parsing JSON/XML, CSV/KV handling, Grok patterns, the Date filter, and strategies to prevent duplicate documents.