This guide explains why Elasticsearch X-Pack reports a license‑expired error and provides step‑by‑step instructions to obtain a new license, place it as license.json, and apply it with a curl command to restore authentication functionality.
This guide explains how to enable and configure the free core security features of Elastic Stack 6.8/7.1, including TLS encryption, user and role management, Kibana Spaces for multi‑tenant protection, and step‑by‑step setup of certificates, keystore passwords, and Logstash‑to‑Elasticsearch authentication across multiple nodes.
This article explains Elasticsearch X‑Pack's machine‑learning capabilities, covering supervised and unsupervised learning concepts, data preparation, task creation types, architecture components, data flow, result indices, and provides code examples for configuring and running ML jobs.
This article reviews the latest Elasticsearch 5.x enhancements—including append‑only indexing, range fields, removal of the _all field, unified highlighter, keyword normalizer, multi‑word synonyms, field collapsing, cancellable searches, partitioned term aggregations, cluster allocation explain, Java REST client updates, cross‑cluster search, batched reduce phases—and previews the major features expected in Elasticsearch 6.0 such as sparse doc values, index sorting, sequence numbers, seamless rolling upgrades, type removal, index‑template inheritance, load‑aware shard routing, and X‑Pack extensions like SQL and machine learning.
