[Solved] You want Elasticsearch to allocate shards so that no two replicas reside in the same zone, while also balancing shards evenly across different rack attributes. Which configuration achieves this? | Elasticsearch

Elasticsearch - Cluster Management

You want Elasticsearch to allocate shards so that no two replicas reside in the same zone, while also balancing shards evenly across different rack attributes. Which configuration achieves this?

A

Set <code>cluster.routing.allocation.awareness.attributes</code> to <code>zone</code> and <code>cluster.routing.allocation.awareness.attributes</code> to <code>rack</code> separately.

B

Set <code>cluster.routing.allocation.awareness.attributes</code> to <code>zone</code> and use <code>index.routing.allocation.awareness.include.rack</code> to balance racks.

C

Set <code>cluster.routing.allocation.awareness.attributes</code> to <code>rack</code> only and rely on default zone balancing.

D

Set <code>cluster.routing.allocation.awareness.attributes</code> to <code>zone,rack</code> and <code>cluster.routing.allocation.awareness.force.zone.values</code> to all zones.

Step-by-Step Solution

Solution:

Step 1: Understand multi-attribute awareness
To ensure replicas are separated by zone and shards balanced by rack, both attributes must be included in awareness settings.
Step 2: Use combined attribute setting
Setting cluster.routing.allocation.awareness.attributes to zone,rack enables awareness on both.
Step 3: Use force values if needed
Setting cluster.routing.allocation.awareness.force.zone.values ensures shards are allocated only on specified zones.
Final Answer:
Set cluster.routing.allocation.awareness.attributes to zone,rack and cluster.routing.allocation.awareness.force.zone.values to all zones. -> Option D
Quick Check:
Are both attributes included in one setting? Yes [OK]

Quick Trick: Combine attributes in one setting to enforce multi-level awareness [OK]

Common Mistakes:

MISTAKES

Setting awareness attributes separately instead of combined
Using index-level settings instead of cluster-level for awareness
Ignoring force values for strict zone allocation

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More Elasticsearch Quizzes

You want Elasticsearch to allocate shards so that no two replicas reside in the same zone, while also balancing shards evenly across different rack attributes. Which configuration achieves this?

Step 1: Understand multi-attribute awareness

Step 2: Use combined attribute setting

Step 3: Use force values if needed

Final Answer:

Quick Check:

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