ELK

• What is ELK and what it is used for?

• Describe key concepts of Elasticsearch

  • Cluster

  • Node (with types)

  • Index

  • Document

  • Shard

  • Replica

• Elasticsearch. Response format: Special Fields

• Refresh & Flush

• Document update

• Mapping/Dynamic Mapping (the text type)

• Elasticsearch API. Search Endpoint

• Elasticsearch API. Term & Term-Level Queries

• What is Kibana/Logstash/Beats?

• What is MetricBeat?