Elasticsearch - Basics and Architecture
You want to optimize an Elasticsearch cluster for high availability. Which shard configuration should you choose for an index with 6 primary shards?
You want to optimize an Elasticsearch cluster for high availability. Which shard configuration should you choose for an index with 6 primary shards?
hard🚀 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand high availability needs
High availability requires multiple copies (replicas) of data to survive node failures.Step 2: Evaluate options
Setting replicas to 2 creates two copies of each shard, improving availability. Other options reduce copies or increase shards unnecessarily.Final Answer:
Set number_of_replicas to 2 to ensure multiple copies across nodes -> Option DQuick Check:
More replicas = better availability [OK]
Quick Trick: Increase replicas for high availability [OK]
Common Mistakes:
MISTAKES- Choosing zero replicas to save space
- Confusing shards with replicas
- Setting too many shards unnecessarily
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