[ELK] logstash filter grok 사용

https://logz.io/blog/logstash-grok/ A Beginner’s Guide to Logstash Grok | Logz.io Logstash Grok plays a crucial part in the logging pipeline. Here's how to get started and construct filters for Syslog, Apache, and Elasticsearch. logz.io https://www.elastic.co/kr/blog/a-practical-introduction-to-logstash A Practical Introduction to Logstash Elastic Stack은 가능한 한 쉽게 Elasticsearch에 데이터를 수집할 수 있도록 해 .....