What ElasticDBA is

2026-08-01

ElasticDBA is a field guide to operating Elasticsearch and OpenSearch clusters in production: shard strategy, JVM and heap tuning, index lifecycle management, snapshots, upgrades, and the failure modes that show up months after a cluster was “working fine.”

Elasticsearch and OpenSearch are forgiving until they aren’t — a cluster can run for a year on default settings before an oversharded index, a heap pressure spike, or a stalled ILM policy turns a quiet Tuesday into an incident. Articles here are practical and evidence-led: the goal is that when a cluster goes yellow or red, there’s a page here that gets you to the actual cause instead of a generic restart-and-hope.

Tags: meta