ELK tutorial
What is ELK? ELK is a combination of 3 open source products: Elasticsearch Logstash Kibana All developed and maintained by Elastic . Elasticsearch is a NoSQL database based on the Lucene search engine. Logstash is a log pipeline tool that accepts data input, performs data conversion, and then outputs data. Kibana is an interface layer that works on top of Elasticsearch. In addition, the ELK stack also contains a series of log collector tools called Beats. The most common usage scenario of ELK is as a log system for Internet products. Of course, the ELK stack can also be used in other aspects, such as: business intelligence, big data analysis, etc. Why use ELK? The ELK stack is very popular, because it is powerful, open source and free. For smaller companies such as SaaS companies and startups, using ELK to build a log system is very cost-effective. Netflix, Facebook, Microsoft, LinkedIn and Cisco also use ELK to monitor logs. Why use a logging system? The log sys...