Elasticsearch - You know, for Search

Terms An index is a stores collection documents that A cluster is a collection of one or more nodes A node (servers) is a single server that is part of your cluster, yourofdata, and have somewhat similar characteristics participates in the cluster’s indexing and search capabilities Index Node Cluster Type Deprecated in 6.0.0 A type used to be a logical category/partition of your index to allow you to store different types of documents in the same index Document A document is a basic unit of information that can be indexed. This document is expressed in JSON (JavaScript Object Notation) which is a ubiquitous internet data interchange format. Elasticsearch provides the ability to subdivide your index into multiple pieces called shards Shard 9 Replica To this end, Elasticsearch allows you to make one or more copies of your index’s shards into what are called replica shards, or replicas for short https://www.elastic.co/guide/en/elasticsearch/reference/current/glossary.html

Elasticsearch Node Types Nodes can play one or more roles, for workload isolation and scaling Elasticsearch • – • • Coordinating (X) • Machine Learning (2+) • Route requests, handle search reduce phase, distribute bulk indexing All nodes function as coordinating nodes Ingest Nodes – Ingest (X) Hold indexed data and perform data related operations Differentiated Hot and Warm Data nodes can be used Coordinating Nodes – – Data – Warm (X) Control the cluster, requires a minimum of 3, one is active at any given time Data Nodes – – Master (3) Data – Hot (X) Master Nodes Use ingest pipelines to transform and enrich before indexing Machine Learning Nodes – Run machine learning jobs X-Pack 10 All product names, logos, and brands are property of their respective owners and are used only for identification purposes. This is not an endorsement.