🔎

OpenSearch Learning Roadmap

The open-source Elasticsearch fork — search, analytics, and observability at scale.

Estimated time:4–5 weeks

1🌱

Phase 1 — Fundamentals

Indices, shards, and mappings

REST API basics (index, search, update)

Query DSL fundamentals

OpenSearch Dashboards

2🔍

Aggregations for analytics

Index templates & component templates

Anomaly detection plugin

Alerting plugin

3⚙️

Shard allocation & rebalancing

Index State Management (ISM) policies

Snapshot repositories

Cross-cluster replication

4📈

important

Hot-warm-cold data tiers

Security plugin (RBAC, TLS)

Query performance tuning

Begin with interview questions to assess your current level.