# elasticsearch-cluster-health

> Claude/Codex skill by [@elastic](https://omgskills.com/library/elastic/index.md) · 4 stars · Updated 2026-10-23

Diagnose a non-green Elasticsearch cluster and surface the single most likely cause with remediation. Use when an operator reports yellow or red status, unassigned shards, allocation failures, or wants read-only triage before deeper investigation. Teaches replica-vs-primary impact, allocation decider classification, and data-loss awareness.

## Install

```sh
git clone https://github.com/elastic/claude-plugin /tmp/claude-plugin && ln -s /tmp/claude-plugin/skills/elasticsearch/elasticsearch-cluster-health ~/.claude/skills/elasticsearch-cluster-health
```

## From README

Diagnose Cluster Health Triage a non-green Elasticsearch cluster read-only: localize the problem, classify the allocation decider, and report the single most likely cause with remediation. Never mutate cluster state — surface findings and let the operator act. Environment Configuration This skill executes Elasticsearch operations through the elastic CLI. If the elastic CLI is not installed, tell the user what it is needed for. Do not guess credentials, call the HTTP API directly, or attempt other workarounds. This skill references operations in HTTP-shorthand form (e.g., GET /, GET /cat/indices, GET /{index}/mapping, GET /{index}/settings/index.mode, POST /query). The Operations table at the end of this document maps each shorthand to the equivalent elastic CLI command — always use the CLI rather than calling the HTTP API directly. Process Read the overall status. Call GET /cluster/health. The status field is the verdict: green — every primary and replica is assigned.

## Links

- HTML page: https://omgskills.com/library/elastic/claude-plugin/skills/elasticsearch/elasticsearch-cluster-health/
- GitHub: https://github.com/elastic/claude-plugin
- Author: [@elastic](https://omgskills.com/library/elastic/index.md)

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