---
title: "OpenSearch"
description: "1 posts about OpenSearch, summarised, each linking to the original."
---

# OpenSearch
> 1 posts about OpenSearch, summarised, each linking to the original.

## Articles

### [Zone-Failure-Resilient OpenSearch® at Uber](https://yomu.fyi/post/zone-failure-resilient-opensearch-at-uber.md)
- Company: [Uber](https://yomu.fyi/company/uber.md)
- Published: Jul 21, 2026
- Type: Problem & solution

Uber describes how it made OpenSearch deployments zone-failure resilient so querying and ingestion remain available after a complete zone loss. The design combines OpenSearch’s shard-allocation awareness with Odin-based isolation groups that distribute nodes predictably across failure domains and balance roles. Clusters maintain at least three shard copies across three isolation groups, while forced awareness keeps shards for a missing group unassigned instead of triggering heavy rebalancing; this trades immediate full replication for stability in surviving zones. For manager resiliency, five cluster manager nodes and cluster.auto\_shrink\_voting\_configuration allow quorum after a zone failure plus one additional manager failure. Uber reports that isolation groups replaced uneven physical zone IDs, enabling complete shard assignment, preventing disk skew and hot nodes, and supporting green cluster health.