(The Elastic Stack technology stack practice is based on enterprise-level Elasticsearch applications and Elasticsearch cluster combat technologies. The course arrangement is very rhythmic, and the actual combat is also very powerful. More challenging than previous courses, especially when Elasticsearch failed. transmission part. At the end of the course, we will conduct actual combat and visual analysis of the log system, from Nginx advanced to Filebeat lightweight Japanese analysis, Kibana visual teaching actual combat, Logstash log collection, conversion and actual combat, very systematic enterprise-level search and log case courses.)